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• Malware - Technical anlaysis

  - by nullptr

  Note: Please do not mod down or close. Im not a stupid PC user asking to fix my pc problem. I am intrigued and am having a deep technical look at whats going on. I have come across a Windows XP machine that is sending unwanted p2p traffic. I have done a 'netstat -b' command and explorer.exe is sending out the traffic. When I kill this process the traffic stops and obviously Windows Explorer dies. Here is the header of the stream from the Wireshark dump (x.x.x.x) is the machines IP. GNUTELLA CONNECT/0.6 Listen-IP: x.x.x.x:8059 Remote-IP: 76.164.224.103 User-Agent: LimeWire/5.3.6 X-Requeries: false X-Ultrapeer: True X-Degree: 32 X-Query-Routing: 0.1 X-Ultrapeer-Query-Routing: 0.1 X-Max-TTL: 3 X-Dynamic-Querying: 0.1 X-Locale-Pref: en GGEP: 0.5 Bye-Packet: 0.1 GNUTELLA/0.6 200 OK Pong-Caching: 0.1 X-Ultrapeer-Needed: false Accept-Encoding: deflate X-Requeries: false X-Locale-Pref: en X-Guess: 0.1 X-Max-TTL: 3 Vendor-Message: 0.2 X-Ultrapeer-Query-Routing: 0.1 X-Query-Routing: 0.1 Listen-IP: 76.164.224.103:15649 X-Ext-Probes: 0.1 Remote-IP: x.x.x.x GGEP: 0.5 X-Dynamic-Querying: 0.1 X-Degree: 32 User-Agent: LimeWire/4.18.7 X-Ultrapeer: True X-Try-Ultrapeers: 121.54.32.36:3279,173.19.233.80:3714,65.182.97.15:5807,115.147.231.81:9751,72.134.30.181:15810,71.59.97.180:24295,74.76.84.250:25497,96.234.62.221:32344,69.44.246.38:42254,98.199.75.23:51230 GNUTELLA/0.6 200 OK So it seems that the malware has hooked into explorer.exe and hidden its self quite well as a Norton Scan doesn't pick anything up. I have looked in Windows firewall and it shouldn't be letting this traffic through. I have had a look into the messages explorer.exe is sending in Spy++ and the only related ones I can see are socket connections etc... My question is what can I do to look into this deeper? What does malware achieve by sending p2p traffic? I know to fix the problem the easiest way is to reinstall Windows but I want to get to the bottom of it first, just out of interest. Edit: Had a look at Deoendency Walker and Process Explorer. Both great tools. Here is a image of the TCP connections for explorer.exe in Process Explorer http://img210.imageshack.us/img210/3563/61930284.gif

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• Internet connection sharing between Windows XP and Windows 7

  - by Dave

  I bought my lil sister's netbooks for Christmas and I've been having a heck of a time trying to get Internet Connection Sharing to work. The host computer is a Windows XP box and it uses a US Cellular 3G modem dongle thingy to set it's Internet access. Additionally I have a hard wire plugged into the LAN1 port of the router described below. (I tried the WAN port out of desperation but things didn't seem happy that way.) Additionally they have a linksys router (can't remember specific model number, I will find this out) that I was using to take advantage of it's wireless capabilities. Originally thought about updating the router to use dd-wrt, but after reading the instructions it looked like to much of a pita (had to downgrade firmware, then install dd-wrt) to set up, eventually I caved, out of desperation, and ended up successfully installing dd-wrt on the router. I have DHCP turned off on the router, actually all I could select was DHCP forwarder. The netbooks both have windows 7 starter installed on them. Initially, I had the networks joined to a homegroup but I dropped that and everyone is able to see everyone in their respective network explorers. When I turn on Internet Connection Sharing on the host, its IP on the LAN changed to 192.168.0.1, so I arbitrarily decided to assign the router to port 192.168.0.100. When I connect the netbooks they get IPs dynamically. As I stated before, everyone can see everyone in the network explorer, and shares can be accessed. The weird thing is that everyone can ping the router but they cannot ping each others IPs. The status on the netbooks says that there is no Internet Connectivity. Another thing I tried was manually setting the DNS servers on the netbooks to the DNS servers that the host computer has. The funny thing is when I ping an outside domain such as google.com the IP address resolves, however I get no responses from the pings. When I tried plugging the host into the WAN port I could ping the router, nor could I access the router's web access admin. Another thing I tried was turning off the firewall on the netbooks and the firewall off on the host computer for the LAN connection, and they still could not ping each other. Also I thought I should be able to start a remote desktop connection but I couldn't do that either, I also checked to make sure that computers would in fact accept a request for remote desktop connections.

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• 403 forbidden while submitting a POST request with image data via iPhone application

  - by binnyb

  I am creating an iOS application which allows users to send image/text data to my webserver via a POST request. I am successfully sending POSTS to the server when image data is not included in the request. Any time i POST with image data the server spits back a 403 forbidden. I have tried adding the following to the .htaccess file in the directory of the script with no luck: Options +Indexes FollowSymLinks +ExecCGI Order allow,deny Allow from all web browsers and Android devices can successfully POST with image data to the script, the only device which cannot is the iPhone. POSTING with data to other hosting providers works as expected - it is just this host(ipowerweb.com). i noticed that when i try to POST to ANY script on the server with data returns a 403 forbidden. another note: i can successfully post to another server that is hosted by ipowerweb, but mine cant seem to handle it. My host has tried to resolve the issue but cannot, and they have marked it on their end as "resolved", so no more help from them. I wish to keep this host as moving would be a pain - i will change hosts as a last resort, so please help me! Why am i getting this 403 forbidden error only when i submit data via my iPhone application? How can i resolve the issue so i can successfully POST data? any advice on what i can do would be greatly appreciated. edit: as request, here are the response headers: { Connection = close; "Content-Length" = 217; "Content-Type" = "text/html; charset=iso-8859-1"; Date = "Wed, 12 Jan 2011 19:11:19 GMT"; Server = "Apache/2"; } edit: as request here are the request headers(oops): { "Accept-Encoding" = gzip; "Content-Length" = 5781; "Content-Type" = "multipart/form-data; charset=utf-8; boundary=0xKhTmLbOuNdArY"; "User-Agent" = "YeahIAteThat 1.0 (iPhone; iPhone OS 4.2.1; en_US)"; }

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• XP Pro product keys

  - by Bill

  I have a very serious problem. After my XP Home OS was trashed by rogue software - a trial of a thing named TuneUp - I did a clean install, including HDD reformat of Windows XP Pro from a purchased OEM disk. This was Service Pack 2, subsequently upgraded to SP3. I had conclusively mislaid the product key. I had to access data on the machine VERY urgently and I did not then know that under some circumstances Microsoft might agree to provide a replacement. I found what I now know must have been a pirate key on the Net which enabled installation but NOT activation. This of course left me functional but 30 days before meltdown - about 20 days left as I write this. Various retailers want around £100 for retail with matching product key. - this would be paying twice over just to continue use on the same computer. I have neither need nor intention of installing XP Pro on any other computer. I have tried a number of applications claiming to deal with this problem but none of them work. A Belarc profile shows that the pirate key has replaced the original one on the system. I have now found two keys, one of which might be the original, but neither work. I am about to upgrade the HDD and it looks like I will just be passing the problem on when I install XP. I have retrieved a key from the disk, but it is seemingly one Microsoft use in production and does not work. It is 76487-OEM-0015242-71798. The keys I have, one of which which might or might not be the original, are CD87T-HFP4G-V7X7H-8VY68-W7D7M and FC8GV-8Y7G7-XKD7P-Y47XF-P829W (or P819W - I believe it to be the latter, but the box will not accept it). The pirate key which has enabled this install and which is now stored on the system but will not activate is QQHHK-T4DKG-74KG7-BQB9G-W47KG. In these circumstances is it likely that Microsoft would issue a replacement? Is there any other solution? I am not trying to defraud anyone, just to keep on using the product I legitimately bought. Bill

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• Solution to route/proxy SNMP Traps (or Netflow, generic UDP, etc) for network monitoring?

  - by Christopher Cashell

  I'm implementing a network monitoring solution for a very large network (approximately 5000 network devices). We'd like to have all devices on our network send SNMP traps to a single box (technically this will probably be an HA pair of boxes) and then have that box pass the SNMP traps on to the real processing boxes. This will allow us to have multiple back-end boxes handling traps, and to distribute load among those back end boxes. One key feature that we need is the ability to forward the traps to a specific box depending on the source address of the trap. Any suggestions for the best way to handle this? Among the things we've considered are: Using snmptrapd to accept the traps, and have it pass them off to a custom written perl handler script to rewrite the trap and send it to the proper processing box Using some sort of load balancing software running on a Linux box to handle this (having some difficulty finding many load balancing programs that will handle UDP) Using a Load Balancing Appliance (F5, etc) Using IPTables on a Linux box to route the SNMP traps with NATing We've currently implemented and are testing the last solution, with a Linux box with IPTables configured to receive the traps, and then depending on the source address of the trap, rewrite it with a destination nat (DNAT) so the packet gets sent to the proper server. For example: # Range: 10.0.0.0/19 Site: abc01 Destination: foo01 iptables -t nat -A PREROUTING -p udp --dport 162 -s 10.0.0.0/19 -j DNAT --to-destination 10.1.2.3 # Range: 10.0.33.0/21 Site: abc01 Destination: foo01 iptables -t nat -A PREROUTING -p udp --dport 162 -s 10.0.33.0/21 -j DNAT --to-destination 10.1.2.3 # Range: 10.1.0.0/16 Site: xyz01 Destination: bar01 iptables -t nat -A PREROUTING -p udp --dport 162 -s 10.1.0.0/16 -j DNAT --to-destination 10.3.2.1 This should work with excellent efficiency for basic trap routing, but it leaves us completely limited to what we can mach and filter on with IPTables, so we're concerned about flexibility for the future. Another feature that we'd really like, but isn't quite a "must have" is the ability to duplicate or mirror the UDP packets. Being able to take one incoming trap and route it to multiple destinations would be very useful. Has anyone tried any of the possible solutions above for SNMP traps (or Netflow, general UDP, etc) load balancing? Or can anyone think of any other alternatives to solve this?

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• mobile broadband recommendations for Lenovo T500

  - by Justin Grant

  I use a Lenovo T500 primarily in and around San Francisco, although I do some travel in the US on business and occasionally to Europe/Asia. I'm looking for a good mobile broadband option for my T500. I am admittedly baffled by the various mobile-broadband choices (3G vs. 4G, WiMax vs. LTE vs. MIMO vs. ..., etc.). My priorities are (in this order): Compatible with Lenovo T500 and Windows 7. I realize only the AT&T accessory card is listed on Lenovo's site, but I've also heard that other cards will work in my T500 too, like the WiMax/Wifi combo card-- so I'm interested in what actually works, not necessarily only what Lenovo is promoting. Reliable coverage in US large cities, especially the SF Bay Area. my IPhone has lousy coverage in many spots, so I'd be nervous about an AT&T 3G option unless the problem is with the IPhone and not AT&T's network. I'm OK with non-great coverage outside major US cities, since I don't do much travel in those areas. Speed. faster is better. Internal card. I'd slightly prefer something I could install inside my T500 instead of a dongle on the side that might break off, although this is my lowest priority so it's not a big deal. Price. I don't want to pay over $100/month. I've tried lots of Googling and haven't come up with clear answers. I've seen lots of general overviews without recommendations, and lots of passionate opinions which don't feel objective (and don't help me understand compatibility with my hardware & geography). Can you recommend a good, objective guide online, ideally for Lenovo although general guide is OK too, which can help me figure out which option is the best one for me? I'd also be interested in your own personal experiences of using mobile broadband using a Lenovo T500. I'll accept the answer which gets me closest to making a decision.

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• User given a login prompt when closing Word documents after viewing them in IE7

  - by Martin Owen

  When using IE7 to view Word documents on our CRM system (an ASP.NET 2.0 application running on Windows Server 2003 and IIS 6 and using Windows authenticaton) I'm finding that a prompt appears when the user closes the document. The Word document is originally opened by clicking a link in the CRM system. Are there permissions that I can set on the folder containing the Word documents to prevent this prompt? I've already tried only allowing the Read permission for the Users group (I've left Administrators with Full Control.) If there's another solution to this without using permissions please let me know. UPDATE: I ran Fiddler as suggested by JD and here is the output from the two responses after the request for the document. The first seems to be a DAV response and the second is the authentication request. How do I prevent the DAV response and just return the .doc on the server? OPTIONS / HTTP/1.1 Translate: f User-Agent: Microsoft Data Access Internet Publishing Provider Protocol Discovery Host: <REMOVED> Content-Length: 0 Connection: Keep-Alive Pragma: no-cache X-NovINet: v1.2 HTTP/1.1 200 OK Date: Thu, 18 Feb 2010 13:37:36 GMT Server: Microsoft-IIS/6.0 X-Powered-By: ASP.NET MS-Author-Via: DAV Content-Length: 0 Accept-Ranges: none DASL: <DAV:sql> DAV: 1, 2 Public: OPTIONS, TRACE, GET, HEAD, DELETE, PUT, POST, COPY, MOVE, MKCOL, PROPFIND, PROPPATCH, LOCK, UNLOCK, SEARCH Allow: OPTIONS, TRACE, GET, HEAD, COPY, PROPFIND, SEARCH, LOCK, UNLOCK Cache-Control: private ------------------------------------------------------------------ OPTIONS /docs/ZONE%20100-105.doc HTTP/1.1 Translate: f User-Agent: Microsoft Data Access Internet Publishing Provider Protocol Discovery Host: <REMOVED> Content-Length: 0 Connection: Keep-Alive Pragma: no-cache X-NovINet: v1.2 HTTP/1.1 401 Unauthorized Content-Length: 83 Content-Type: text/html Server: Microsoft-IIS/6.0 WWW-Authenticate: Basic realm="<REMOVED>" X-Powered-By: ASP.NET Date: Thu, 18 Feb 2010 13:37:36 GMT ------------------------------------------------------------------ UPDATE 2: I found a potential workaround for the problem via this post: http://forums.iis.net/p/1149091/1868317.aspx. I moved all of the documents that are being requested into a folder outside of the web root, and created a virtual directory for it (also outside of the web root). When I followed a link to one of the documents in IE and then closed the document I wasn't presented with a login prompt. I should point out that I'm not using FPSE, unlike the person in the forum post. Ideally I don't want to have to put the documents in a separate virtual directory, but this is the simplest solution I've found so far.

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• Email server can send internal, but messages never arrive at external recipients

  - by Chase Florell

  I'm running MailEnable on my server, and have been for many years. Recently we had an attack on our server, and I was able to close the hole. Since then, our mail server doesn't seem to be sending mail out. If I send an email from myself to another account hosted on the server, the email arrives as expected. If I send an email from my gmail account to my business account, the email also arrives as expected The problem comes when I send from my business account to an external domain I tried the following Gmail.com Hotmail.com Shaw.ca When I send to any of the above The message leaves my client as expected, The logs appear to accept and forward on the message The SMTP outbound que is empty The message never arrives I have checked our domain with mxtoolbox.com senderbase.org And neither of them are reporting any problems with our domain. I have ensured that port 25 is open (along with the other standard ports) Here is one of the log entries from the SMTP connector 11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 220 mx1.example.com ESMTP MailEnable Service, Version: 6.81--6.81 ready at 11/05/13 12:10:00 0 0 11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 EHLO EHLO ASSP.nospam 250-mx1.example.com [127.0.0.1], this server offers 6 extensions 159 18 11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 EHLO EHLO ASSP.nospam 250-mx1.example.com [127.0.0.1], this server offers 6 extensions 159 18 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH AUTH LOGIN 334 VXNlcm5hbWU6 18 12 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH {blank} 334 UGFzc3dvcmQ6 18 26 [email protected] 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH Y29sb25lbGZhY2U= 235 Authenticated 19 18 [email protected] 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 MAIL MAIL FROM:<[email protected]> 250 Requested mail action okay, completed 43 31 [email protected] 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 RCPT RCPT TO:<[email protected]> 250 Requested mail action okay, completed 43 35 [email protected] 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 DATA DATA 354 Start mail input; end with <CRLF>.<CRLF> 46 6 [email protected] Here are the headers of the sent message X-Assp-Version: 1.7.5.7(1.0.07) on ASSP.nospam X-Assp-ID: ASSP.nospam 78601-04523 X-Assp-Intended-For: [email protected] X-Assp-Envelope-From: [email protected] Received: from [10.10.1.101] ([68.147.245.149] helo=[10.10.1.101]) with IPv4:587 by ASSP.nospam; 5 Nov 2013 12:10:00 -0700 From: Chase Florell <[email protected]> Content-Type: text/plain Content-Transfer-Encoding: 7bit Subject: Test Message Message-Id: <[email protected]> Date: Tue, 5 Nov 2013 12:10:18 -0700 To: Chase Florell <[email protected]> Mime-Version: 1.0 (Mac OS X Mail 7.0 \(1816\)) X-Mailer: Apple Mail (2.1816) . Where else can I check to see if there is something broken? What could cause a problem like this whereby the message appears to send, but never arrives, and never returns a bounce?

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• Forwarding RDP via a Linux machine using iptables: Not working

  - by Nimmy Lebby

  I have a Linux machine and a Windows machine behind a router that implements NAT (the diagram might be overkill, but was fun to make): I am forwarding RDP port (3389) on the router to the Linux machine because I want to audit RDP connections. For the Linux machine to forward RDP traffic, I wrote these iptables rules: iptables -t nat -A PREROUTING -p tcp --dport 3389 -j DNAT --to-destination win-box iptables -A FORWARD -p tcp --dport 3389 -j ACCEPT The port is listening on the Windows machine: C:\Users\nimmy>netstat -a Active Connections Proto Local Address Foreign Address State (..snip..) TCP 0.0.0.0:3389 WIN-BOX:0 LISTENING (..snip..) And the port is forwarding on the Linux machine: # tcpdump port 3389 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes 01:33:11.451663 IP shieldsup.grc.com.56387 > linux-box.myapt.lan.ms-wbt-server: Flags [S], seq 94663035, win 8192, options [mss 1460], length 0 01:33:11.451846 IP shieldsup.grc.com.56387 > win-box.myapt.lan.ms-wbt-server: Flags [S], seq 94663035, win 8192, options [mss 1460], length 0 However, I am not getting any successful RDP connections from the outside. The port is not even responding: C:\Users\outside-nimmy>telnet example.com 3389 Connecting To example.com...Could not open connection to the host, on port 3389: Connect failed Any ideas? Update Per @Zhiqiang Ma, I looked at nf_conntrack proc file during a connection attempt and this is what I see (192.168.3.1 = linux-box, 192.168.3.5 = win-box): # cat /proc/net/nf_conntrack | grep 3389 ipv4 2 tcp 6 118 SYN_SENT src=4.79.142.206 dst=192.168.3.1 sport=43142 dport=3389 packets=6 bytes=264 [UNREPLIED] src=192.168.3.5 dst=4.79.142.206 sport=3389 dport=43142 packets=0 bytes=0 mark=0 secmark=0 zone=0 use=2 2nd update Got tcpdump on the router and it seems that win-box is sending an RST packet: 21:20:24.767792 IP shieldsup.grc.com.45349 > linux-box.myapt.lan.3389: S 19088743:19088743(0) win 8192 <mss 1460> 21:20:24.768038 IP shieldsup.grc.com.45349 > win-box.myapt.lan.3389: S 19088743:19088743(0) win 8192 <mss 1460> 21:20:24.770674 IP win-box.myapt.lan.3389 > shieldsup.grc.com.45349: R 721745706:721745706(0) ack 755785049 win 0 Why would Windows be doing this?

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• "Hostile" network in the company - please comment on a security setup

  - by TomTom

  I have a little specific problem here that I want (need) to solve in a satisfactory way. My company has multiple (IPv4) networks that are controlled by our router sitting in the middle. Typical smaller shop setup. There is now one additional network that has an IP Range OUTSIDE of our control, connected to the internet with another router OUTSIDE of our control. Call it a project network that is part of another companies network and combined via VPN they set up. This means: They control the router that is used for this network and They can reconfigure things so that they can access the machines in this network. The network is physically split on our end through some VLAN capable switches as it covers three locations. At one end there is the router the other company controls. I Need / want to give the machines used in this network access to my company network. In fact, it may be good to make them part of my active directory domain. The people working on those machines are part of my company. BUT - I need to do so without compromising the security of my company network from outside influence. Any sort of router integration using the externally controlled router is out by this idea So, my idea is this: We accept the IPv4 address space and network topology in this network is not under our control. We seek alternatives to integrate those machines into our company network. The 2 concepts I came up with are: Use some sort of VPN - have the machines log into VPN. Thanks to them using modern windows, this could be transparent DirectAccess. This essentially treats the other IP space not different than any restaurant network a laptop of the company goes in. Alternatively - establish IPv6 routing to this ethernet segment. But - and this is a trick - block all IPv6 packets in the switch before they hit the third party controlled router, so that even IF they turn on IPv6 on that thing (not used now, but they could do it) they would get not a single packet. The switch can nicely do that by pulling all IPv6 traffic coming to that port into a separate VLAN (based on ethernet protocol type). Anyone sees a problem with using he switch to isolate the outer from IPv6? Any security hole? It is sad we have to treat this network as hostile - would be a lot easier - but the support personnel there is of "known dubious quality" and the legal side is clear - we can not fulfill our obligations when we integrate them into our company while they are under a jurisdiction we don't have a say in.

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• SMTP host name vs. domain in "From:" address vis-a-vis Email Deliverability

  - by Jared Duncan

  I'm trying to implement (or make sure that I'm correctly following) email sending best practices to improve deliverability, but the role of the smtp server's host name vs the domain name of the From: email address seems to be unclear, even after reading dozens of people's articles/input. Specifically, I understand that to satisfy the reverse DNS check, there must be a PTR record for the IP address of the sending machine that yields a domain name that matches the host name of the sending machine / SMTP server. Some say it needs to match the one given by the "hostname" command, most say it's the one provided with the HELO / EHLO statement, and this guy even says they MUST be the same (according to / enforced by what, I don't know; that's only a minor point of confusion, anyhow). First, what I can't find anywhere is whether or not the domain name of the From: email address needs to match the domain name of the SMTP server. So in my case, I have a VPS with linode. It primarily hosts a particular domain of mine, example.com, but I also sometimes do work on other projects: foo.com and bar.com. So what I'm wondering is if I can just leave the default linode PTR record (which resolves to abc.def.linode.com), make sure that abc.def.linode.com is what my mail server (qmail) is configured to say at HELO, and then proceed to use it to send out emails for example.com, foo.com, et al. If so, then I am confused by the advice given here, specifically (in a listing of bad case scenarios): No SPF record for the domain being used in the HELO command Why would THAT domain need an SPF record? And if it does, which domain should it provide whitelisting for: the HELO domain, or the domain of the From: email address (envelope sender)? Also, which domain would need to accept mail sent to [email protected]? If the domains must be the same, that would seem rather limiting to me, because then for every domain you wanted to send email from, you'd have to get another IP address for it. It would also compromise or ruin one's ability to do non-email sending things (e.g. wget) relatively anonymously. However, the upside--if this is the case--is that it would make for a far less confusing setup. I'm currently using the linode.com SMTP+PTR domain and example.com From: address combination without much of any deliverability issue, but my volume is very low and I'd like to know if someone out there has experience with larger volumes and has specifically tested the difference and/or has inside knowledge and/or has an authoritative answer (and source) for this particular question. I'm happy to clarify anything, let me know. Thanks in advance.

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• Postfix: How to apply header_checks only for specific Domains?

  - by Lukas

  Basically what I want to do is rewriting the From: Header, using header_checks, but only if the mail goes to a certain domain. The problem with header_check is, that I can't check for a combination of To: and From: Headers. Now I was wondering if it was possible to use the header_checks in combination with smtpd_restriction_classes or something similar. I've found a lot information about header_checks and multiple header fields, when searching the net. All of them basically telling me, that one can't combine two header for checking. But I didn't find any information if it was possible to only do a header check if a condition (eg. mail goes to example.com) was met. Edit: While doing some more Research I've found the following article which suggests to add a Service in postfix master.cf, use a transportmap to pass mails for the Domain to that service and have a separate header_check defined with -o. The thing is that I can't get it to work... What I did so far is adding the Service to the master.cf: example unix - - n - - smtpd -o header_checks=regexp:/etc/postfix/check_headers_example Adding the followin Line to the transportmap: example.com example: Last but not least I have two regexp-files for header checks, one for the newly added service, and one to redirect answers to the rewritten domain. check_headers_example: /From:(.*)@mydomain.ain>(.*)/ REPLACE From:[email protected]>$2 Obviously if someone answers, the mail would go to nirvana, so I have the following check_headers defined in the main postfix process: /To:(.*)<(.*)@mydomain.example.com>(.*)/ REDIRECT [email protected]$2 Somehow the Transport is ignored. Any help is appreciated. Edit 2: I'm still stuck... I did try the following: smtpd_restriction_classes = header_rewrite header_rewrite = regexp:/etc/postfix/rewrite_headers_domain smtpd_recipient_restrictions = (some checks) check_recipient_access hash:/etc/postfix/rewrite_table, (more checks) In the rewrite_table the following entries exist: /From:(.*)@mydomain.ain>(.*)/ REPLACE From:[email protected]>$2 All it gets me is a NOQUEUE: reject: 451 4.3.5 Server configuration error. I couldn't find any resources on how you would do that but some people saying it wasn't possible. Edit 3: The reason I asked this question was, that we have a customer (lets say customer.com) who uses some aliases that will forward mail to a domain, let's say example.com. The mailserver at example.com does not accept any mail from an external server that come from a sender @example.com. So all mails that are written from example.com to [email protected] will be rejected in the end. An exception on example.com's mailserver is not possible. We didn't really solve this problem, but will try to work around it by using lists (mailman) instead of aliases. This is not really nice though, nor a real solution. I'd appreciate all suggestions how this could be done in a proper way.

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• How to get rid of messages addressed to not existing subdomains?

  - by user71061

  Hi! I have small problem with my sendmail server and need your little help :-) My situation is as follow: User mailboxes are placed on MS exchanege server and all mail to and from outside world are relayed trough my sendmail box. Exchange server ----- sendmail server ------ Internet My servers accept messages for one main domain (say, my.domain.com) and for few other domains (let we narrow it too just one, say my_other.domain.com). After configuring sendmail with showed bellow abbreviated sendmail.mc file, essentially everything works ok, but there is small problem. I want to reject messages addressed to not existing recipients as soon as possible (to avoid sending non delivery reports), so my sendmail server make LDAP queries to exchange server, validating every recipient address. This works well both domains but not for subdomains. Such subdomains do not exist, but someone (I'm mean those heated spamers :-) could try addresses like this: user@any_host.my.domain.com or user@any_host.my_other.domain.com and for those addresses results are as follows: Messages to user@sendmail_hostname.my.domain.com are rejected with error "Unknown user" (due to additional LDAPROUTE_DOMAIN line in my sendmail.mc file, and this is expected behaviour) Messages to user@any_other_hostname.my.domain.com are rejected with error "Relaying denied". Little strange to me, why this time the error is different, but still ok. After all message was rejected and I don't care very much what error code will be returned to sender (spamer). Messages to user@sendmail_hostname.my_other.domain.com and user@any_other_hostname.my_other.domain.com are rejected with error "Unknown user" but only when, there is no user@my_other.domain.com mailbox (on exchange server). If such mailbox exist, then all three addresses (i.e. user@my_other.domain.com, user@sendmail_hostname.my_other.domain.com and user@any_other_hostname.my_other.domain.com) will be accepted. (adding additional line LDAPROUTE_DOMAIN(my_sendmail_host.my_other.domain.com) to my sendmail.mc file don't change anything) My abbreviated sendmail.mc file is as follows (sendmail 8.14.3-5). Both domains are listed in /etc/mail/local-host-names file (FEATURE(use_cw_file) ): define(`_USE_ETC_MAIL_')dnl include(`/usr/share/sendmail/cf/m4/cf.m4')dnl OSTYPE(`debian')dnl DOMAIN(`debian-mta')dnl undefine(`confHOST_STATUS_DIRECTORY')dnl define(`confRUN_AS_USER',`smmta:smmsp')dnl FEATURE(`no_default_msa')dnl define(`confPRIVACY_FLAGS',`needmailhelo,needexpnhelo,needvrfyhelo,restrictqrun,restrictexpand,nobodyreturn,authwarnings')dnl FEATURE(`use_cw_file')dnl FEATURE(`access_db', , `skip')dnl FEATURE(`always_add_domain')dnl MASQUERADE_AS(`my.domain.com')dnl FEATURE(`allmasquerade')dnl FEATURE(`masquerade_envelope')dnl dnl define(`confLDAP_DEFAULT_SPEC',`-p 389 -h my_exchange_server.my.domain.com -b dc=my,dc=domain,dc=com')dnl dnl define(`ALIAS_FILE',`/etc/aliases,ldap:-k (&(|(objectclass=user)(objectclass=group))(proxyAddresses=smtp:%0)) -v mail')dnl FEATURE(`ldap_routing',, `ldap -1 -T<TMPF> -v mail -k proxyAddresses=SMTP:%0', `bounce')dnl LDAPROUTE_DOMAIN(`my.domain.com')dnl LDAPROUTE_DOMAIN(`my_other.domain.com ')dnl LDAPROUTE_DOMAIN(`my_sendmail_host.my.domain.com')dnl define(`confLDAP_DEFAULT_SPEC', `-p 389 -h "my_exchange_server.my.domain.com" -d "CN=sendmail,CN=Users,DC=my,DC=domain,DC=com" -M simple -P /etc/mail/ldap-secret -b "DC=my,DC=domain,DC=com"')dnl FEATURE(`nouucp',`reject')dnl undefine(`UUCP_RELAY')dnl undefine(`BITNET_RELAY')dnl define(`confTRY_NULL_MX_LIST',true)dnl define(`confDONT_PROBE_INTERFACES',true)dnl define(`MAIL_HUB',` my_exchange_server.my.domain.com.')dnl FEATURE(`stickyhost')dnl MAILER_DEFINITIONS MAILER(smtp)dnl Could someone more experienced with sendmail advice my how to reject messages to those unwanted subdomains? P.S. Mailboxes @my_other.domain.com are used only for receiving messages and never for sending.

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• Hibernating and booting into another OS: will my filesystems be corrupted?

  - by Ryan Thompson

  Suppose I have Windows and Linux installed on the same computer. If I hibernate Windows, can I boot into Linux without corrupting the Windows filesystem when I resume Windows? What about the other way around? What if I hibernate one, boot into the other, and mount the hibernated filesystem read/write? Read-only? If this is unsafe, is there any way to detect the hibernated state of the other OS and prevent mounting its filesystem? Basically, how far can I push this before it breaks, and how dangerous is it near the edge? I think I know the answers to some of the above questions, but for other ones, I have no idea, and for obvious reasons I have not tested this on my own computer. If someone has tested these, please enlighten the rest of us. I'm not necessarily looking for a specific answer to every question; I'll accept any response that answers a reasonable portion. EDIT: Let me clarify that when I say "hibernate," I mean the process of writing the contents of RAM to the hard disk and completely powering down the computer. In this state, powering the computer back on brings you through the BIOS and bootloader again, and you could theoretically select another operating system on a multi-boot system. Anyway, on with the original question: RESULTS Ok, after everyone's assurances that this would work, I tested it for myself. I set up Ubuntu to remount all ntfs filesystems and external drives read-only before hibernating. There was no need for a similar Windows setup because Windows does not read Linux filesystems. Then, I tried alternately hibernating one operating system and resuming the other, back and forth a few times. I even tried mounting the Windows filesystem from Ubuntu read-write, and creating a few files. Windows didn't complain when I resumed. So, in conclusion, you can more or less freely hibernate in a dual-boot Windows/Linux scenario. Note that I did not test a dual Linux/Linux co-hibernation situation. If you have two or more Linux installs and you hibernate one of them, you might be able to corrupt the filesystem by mounting it from another.

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• Mercurial not receiving push

  - by Jeffrey04

  I have a mercurial web-frontend (hgwebdir.cgi) installed on a server, and an installation of nginx was installed in front of it as a reverse proxy to the web-frontend as my friend suggested. However, whenever a large changeset is pushed (via a script), it would fail. I found an issue ticket @google-code that describe similar problem, and there is a solution that says (#39) So the server side answer is: don't send the 401 back early. Be as slow/dumb as 'hg serve' and make the hg client send the bundle twice. How do I do that? My current nginx config location /repo/testdomain.com { rewrite ^(.*) http://bpj.kkr.gov.my$1/hgwebdir.cgi; } location /repo/testdomain.com/ { rewrite ^(.*) http://bpj.kkr.gov.my$1hgwebdir.cgi; } location /repo/testdomain.com/hgwebdir.cgi { proxy_pass http://localhost:81/repo/testdomain.com/hgwebdir.cgi; proxy_set_header Host $http_host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_buffering on; client_max_body_size 4096M; proxy_read_timeout 30000; proxy_send_timeout 30000; } From the access log we keep seeing 408 entries incoming.ip.address - - [18/Nov/2009:08:29:31 +0800] "POST /repo/testdomain.com/hgwebdir.cgi/example_repository?cmd=unbundle&heads=73121b2b6159afc47cc3a028060902883d5b1e74 HTTP/1.1" 408 0 "-" "mercurial/proto-1.0" incoming.ip.address - - [18/Nov/2009:08:37:14 +0800] "POST /repo/testdomain.com/hgwebdir.cgi/example_repository?cmd=unbundle&heads=73121b2b6159afc47cc3a028060902883d5b1e74 HTTP/1.1" 408 0 "-" "mercurial/proto-1.0" Is there anything else I can do on the server because solving it on the server side is preferable :/ Further Findings Bitbucket seems to have this solved ( Check liquidhg bitbucket project and the Diagnosis wiki page ) on the server side, can't find the config anywhere though :/ What happens next varies depending on your server. Some servers refuse the BODY, simplying closing the pipe from the client and causing Mercurial to fail. Some, like Apache (at least the way I configure it, and that could be part of the problem) and nginx (they way BitBucket.org configures it), accept the BODY, though it may take a few retries. Bottom line: if Mercurial doesn't fail the push, it sends the changeset data at least once to a server that has already told it it lacks credentials (more on this at Blame). Assuming Mercurial is still running, it resends the "unbundle" request and data, this time with authentication. Finally, Apache accepts the data successfully. Nginx, OTOH, at least under BitBucket's configuration, seems to reassemble the previous body (the one that lacked authentication) and somehow keep Mercurial from re-sending the whole body.

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• Exchange 2010 forwarded emails by external servers being blocked

  - by MadBoy

  Our users were getting spam messages from their own accounts (same domain/login for example [email protected] to [email protected]). This is preety standard trick and I decided to block it so that anonymous users can't send emails as @company.com. This brought some problems on us like our printers not being able to send emails etc but I solved it with secondary smtp receiver on different port with ip restrictions. However it seems to affect forwarding by some e-mail servers as well: Hi. This is the qmail-send program at home.pl. I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. : 89.14.1.26 failed after I sent the message. Remote host said: 550 5.7.1 Client does not have permissions to send as this sender --- Below this line is a copy of the message. Return-Path: Return-Path: Received: from mail.company.com [89.14.1.26] (HELO mail.company.com) by company.ho.pl [79.93.31.43] with SMTP (IdeaSmtpServer v0.70) id 488fcb01c2f069d9; Tue, 3 Jan 2012 09:46:55 +0100 Received: from EXCHANGE1.COMPANY ([fe80::d425:135f:b655:1223]) by EXCHANGE2.COMPANY ([fe80::193f:51ac:9316:cb27%14]) with mapi id 14.01.0355.002; Tue, 3 Jan 2012 09:46:55 +0100 From: =?iso-8859-2?Q?MadBoy?= So basically server forwards it without affecting email address it was send with and our servers treat it like spam. I used this command to block things: Get-ReceiveConnector "DEFAULT Exchange2" | Get-ADPermission -user "NT AUTHORITY\Anonymous Logon" | where {$_.ExtendedRights -like "ms-exch-smtp-accept-authoritative-domain-sender"} | Remove-ADPermission Is there anyway I can keep on receiveing things like forwards but be able to block things (except some dedicated antispam solution - this will be added later). Also how do I "reassing" back the permissions that was removed? EDIT to clarify: I have a domain domain.com configured as Authorative. Couple of our users are on project for differentcompany.com which is not on our servers or anywhere close. Now when they send an email from their accounts lets say [email protected] to [email protected] that special alias is configured so that any email it receives it forwards to multiple people including a group alias at our domain [email protected] and that group alias puts the email in users mailboxes. After the email is forwarded by [email protected] and it reaches our server it is denied because the forwarding done by the "external" server doesn't affect user information so for the server it seems like the [email protected] was actually sender and it treats it as spam and denies it. The server at differentcompany.com just adds itself to the header that it passed thru it and doesn't modify sender at anyway (seems like this is how forwarding works). Although I could probably allow this particular server as allowed to relay but this would seem to affect more servers/users as anyone can setup forwarding on their email back to our domain...

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• nginx proxypath https redirects to http

  - by Thermionix

  I'm trying to setup Nginx to forward requests to several backend services using proxy_pass however several pages load with 404s The links on the pages have https:// in front, but result in a http request - which ends in a 404 - I only want these services to be available through https. I've tried with varied trailing forward slashes appended to the proxypath and location in proxy.conf, I've also tried commenting out www.conf (just incase its location blocks could have caused any conflicts) to no effect. So if a link is too https://example.com/sickbeard/errorlogs in a browser when loaded https://example.com/sickbeard/errorlogs gives a 404 in a browser https://example.com/sickbeard/errorlogs/ loads nginx error log; 2011/11/23 14:21:58 [error] 28882#0: *6 "/var/www/sickbeard/errorlogs/recent.html" is not found (2: No such file or directory), client: 192.168.1.99, server: example.com, request: "GET /sickbeard/errorlogs/ HTTP/1.1", host: "example.com" Config files; proxy.conf location /sickbeard { proxy_pass http://localhost:8081/sickbeard; include proxy.inc; } .... more entries .... sites-enabled/main server { listen 80; include www.conf; } server { listen 443; include proxy.conf; include www.conf; ssl on; } www.conf root /var/www; server_name example.com; location / { autoindex off; allow all; rewrite ^/$ /mainsite last; location ~* \.(jpg|jpeg|gif|css|png|js|ico)$ { expires max; } location ~ \.php$ { fastcgi_index index.php; include fastcgi_params; if (-f $request_filename) { fastcgi_pass 127.0.0.1:9000; } } } proxy.inc proxy_connect_timeout 59s; proxy_send_timeout 600; proxy_read_timeout 600; proxy_buffer_size 64k; proxy_buffers 16 32k; proxy_pass_header Set-Cookie; proxy_redirect off; proxy_hide_header Vary; proxy_busy_buffers_size 64k; proxy_temp_file_write_size 64k; proxy_set_header Accept-Encoding ''; proxy_ignore_headers Cache-Control Expires; proxy_set_header Referer $http_referer; proxy_set_header Host $host; proxy_set_header Cookie $http_cookie; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-Host $host; proxy_set_header X-Forwarded-Server $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

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• How do I configure a site in IIS 7 for SSL with a wildcard certificate?

  - by michielvoo

  We have an Windows 2008 server with IIS 7 to test sites we develop for our clients. Each site has a binding on a subdomain: clienta.example.com clientb.example.com clientc.example.com (* Using example.com to protect the innocent) For one of these sites we now have to test if it works over https. So I have created a wildcard certificate request with *.example.com as the common name. I have received the certificate (issued by PositiveSSL SA) and completed the request. The certificate is now installed in IIS. Now I have added an https binding to the second site with the following settings: type: https IP address: All Unassigned Port: 443 Host name: clientb.example.com SSL certificate: *.example.com Browsing the site over regular http works fine. When I try to browse the site over https I get the following errors (depending on the browser used): Chrome This webpage is not available Error 102 (net::ERR_CONNECTION_REFUSED): Unknown error. Firefox Unable to connect Firefox can't establish a connection to the server at clientb.example.com Firebug says Status: Aborted Internet Explorer Internet Explorer cannot display the webpage I have checked Failed Request Tracing, and according to the log the request was completed with status 200. I have run the SSL Diagnostics Tool with the following result: System time: Fri, 04 Mar 2011 14:04:35 GMT Connecting to 192.168.2.95:443 Connected Handshake: 115 bytes sent Handshake: 3877 bytes received Handshake: 326 bytes sent Handshake: 59 bytes received Handshake succeeded Verifying server certificate, it might take a while... Server certificate name: *.example.com Server certificate subject: OU=Domain Control Validated, OU=PositiveSSL Wildcard, CN=*.example.com Server certificate issuer: C=GB, S=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=PositiveSSL CA Server certificate validity: From 2-3-2011 1:00:00 To 2-3-2012 0:59:59 1:00:00 To 2-3-2012 0:59:59 HTTPS request: GET / HTTP/1.0 User-Agent: SSLDiag Accept:*/* HTTPS: 85 bytes of encrypted data sent HTTPS: 533 bytes of encrypted data received Status: HTTP/1.1 404 Not Found HTTP/1.1 404 Not Found Content-Type: text/html; charset=us-ascii Server: Microsoft-HTTPAPI/2.0 Date: Fri, 04 Mar 2011 14:04:35 GMT Connection: close Content-Length: 315 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd"> <HTML><HEAD><TITLE>Not Found</TITLE> <META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"></HEAD> <BODY><h2>Not Found</h2> <hr><p>HTTP Error 404. The requested resource is not found.</p> </BODY></HTML> HTTPS: server disconnected Final handshake: 37 bytes sent successfully Q: What can I do to make this work?

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• How should I convert a physical drive to a VHD for use with VirtualPC?

  - by RBerteig

  I have the hard disks from a PC that was happily running Windows Me until is it suffered an unknown hardware failure. The drives are intact, and can be mounted and read on other PCs. We have data backups, but there is licensed software installed that may not be possible to migrate to newer versions running on a more modern platform making the idea of just booting a virtual image attractive. Is it possible to make VHDs from the drives such that I can boot them in VirtualPC? If not VirtualPC, would it be possible in any other virtualization tool? Edit: Some more details.... The system was running Windows Me, but upgraded from Windows 95 (or possibly 98). It can't have been more than a Pentium II, but I will have to look at the motherboard to confirm that. There were no "exotic" devices installed, and nothing beyond the usual legacy stuff that would need to survive into a virtual machine. The licensed software did not have a dongle, so I won't need to worry about virtualizing a physical dongle of some kind. Licenses were probably died to the disk serial number. There were two HDs, both IDE. The boot disk is about 6GB, and the spare data disk is 12GB, but nearly empty. I have a small bias in favor of VirtualPC just because its free and I've used it successfully in the past. But this is a good excuse to revisit the state of the art. I do know from direct experience that it is possible to install and boot DOS 5.0 and Win95 in VirtualPC, but the VM extensions weren't available so the experience isn't as seamless as I would have liked. A very old DirectX game that failed miserably under XP SP2 runs really nicely on that VM, and actually plays better in a lot of ways than it did on period hardware, so that gives me hope that this is possible. Edit 2: Well, I'm closer than I was when I asked... so thanks to all for helpful suggestions and hints to what I should be trying. I used WinImage to copy the disks, and VirtualPC 2007 to attempt to boot. So far, I have it booting in safe mode, but hanging with a black screen otherwise. I strongly suspect that the copy of Artisoft Lantastic 8.0 (anyone else remember them?) that is still installed for networking with even older PCs that mostly don't exist any more is the culprit there. In my infinite free time, I will try to resolve the differences between a Safe Mode boot and a normal boot, and feel that it is likely to yield to pressure. I'd accept more than one answer if I could... this isn't as black and white a question as the one accepted answer convention assumes.

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• MBPro, mid 2010 can't see Dlink DIR655 signal after sleep etc

  - by user88114

  This is my son's MBP 7,1 running Snow Leopard 10.6.7. Router signal is fine since iPad, Wintel on same table 20 feet from router are fine. the MBP however frequently wakes and fails to find the internet. iStumbler can see 1 neighbours hub and my garden hub are there but can't get to the normal DIR655 wifi... no ping no en0 or en1 device seems to exist. Airport off and on does not help. He just resets router and it all works but this does not please me! I must admit the winter sometimes seems to loose connect too, but less so. The DIR655 (hardware rev A3) is on the original EU firmware 1.10, I'm cautious about jumping to latest 1.31EU since no downgrade seems to be possible and that feels a bit risky as so much is set up and working fine. If I use the DIR655 admin web and release the lease the MBP has then wake it all worked OK. So I suspect lease timing/locking issue but unsure how to check up, plus why iStumbler seems to say the network is not visible at all when I sit on the iPad right next to it just fine.. I do not think there are any channel overlaps and we also have RFquiet DECT phones (Orchid) that are silent until lifted or called. Anyway signals all show low interference and high throughput except for this failure to connect. Just walked the MBP to the garden office and iStumbler now sees the more distant DIR655 signal although it will not connect to it (does not show under Sys Prefs NetNetwork names) even after airport off & on... It also refuses to connect to my garden network (an old Belkin acting as AP wired to DIR655), the signal it can see and even net name in Sys Prefs NetNetwork names (2 mins later):NOW both names ARE visible, but both fail to accept the correct WPA2 password and keep asking again after failing to connect. IT ALL MAKES NO SENSE TO ME. Just revoked the lease for the MBP on DIR655 and no changes although this seemed to help MBP wake into connection 1 hour ago. OK a bit of walking about to report. Carried MBP across garden towards DIR655, a few other wifis show up on iStumbler, low signals all channel 1. Right next to DIR655 but iStumbler not showing it, although most other wifi's have gone. I'd say iStubler is suffering timeouts&hangs but hard to be sure. Lots of attempts to Airport on/off, join other etc and suddenly I get to connect, get given new IP (I revoked), can browse. Walk away, connection drops quite soon at 30 feet then reconnected briefly then died again. MUST ATTEND ELSEWHERE FOR A BIT...

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• SSL connection error during handshake on Windows Server 2008 R2

  - by Thomas

  I have a Windows 2008 R2 Server that runs a HTTPS Tunneling service. The software uses a certificate that is provided via the Windows certificate store. The certificate is located in the local computer private certificates. It supports server and client authentication with signing and keyencipherment. Cert chain The certificate chain looks fine. It's a Thawte SSL123 certificate. Thawte Premium Server CA (SHA1) [?e0 ab 05 94 20 72 54 93 05 60 62 02 36 70 f7 cd 2e fc 66 66] thawte Primary Root CA [?1f a4 90 d1 d4 95 79 42 cd 23 54 5f 6e 82 3d 00 00 79 6e a2] Thawte DV SSL CA [3c a9 58 f3 e7 d6 83 7e 1c 1a cf 8b 0f 6a 2e 6d 48 7d 67 62] Server certificate Issues Most browsers accept the certificate without any warning. But IE 7 on Windows XP SP3 and Opera 12 on OSX just report an connection error. Opera complains: Secure connection: fatal error (552) https://www.example.com/ Opera was not able to connect to the server, because the server does not communicate via any secure protocol known to Opera. A connection test using openssl s_client -connect www.example.com:443 -state says: CONNECTED(00000003) SSL_connect:before/connect initialization SSL_connect:SSLv2/v3 write client hello A 52471:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:/SourceCache/OpenSSL098/OpenSSL098-35.1/src/ssl/s23_lib.c:182: ssldump -aAHd host www.example.com during curl https://www.example.com/ reports: New TCP connection #1: localhost(53302) <-> www.example.com(443) 1 1 0.0235 (0.0235) C>SV3.1(117) Handshake ClientHello Version 3.1 random[32]= 50 77 56 29 e8 23 82 3b 7f e0 ae 2d c1 31 cb ac 38 01 31 85 4f 91 39 c1 04 32 a6 68 25 cd a0 c1 cipher suites Unknown value 0x39 Unknown value 0x38 Unknown value 0x35 TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA TLS_RSA_WITH_3DES_EDE_CBC_SHA Unknown value 0x33 Unknown value 0x32 Unknown value 0x2f Unknown value 0x9a Unknown value 0x99 Unknown value 0x96 TLS_RSA_WITH_RC4_128_SHA TLS_RSA_WITH_RC4_128_MD5 TLS_DHE_RSA_WITH_DES_CBC_SHA TLS_DHE_DSS_WITH_DES_CBC_SHA TLS_RSA_WITH_DES_CBC_SHA TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA TLS_RSA_EXPORT_WITH_DES40_CBC_SHA TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5 TLS_RSA_EXPORT_WITH_RC4_40_MD5 Unknown value 0xff compression methods unknown value NULL 1 0.0479 (0.0243) S>C TCP FIN 1 0.0481 (0.0002) C>S TCP FIN Thawte provides two Java based SSL Checkers. The Legacy Thawte SSL Certificate Installation Checker and the sslToolBox. Both validate the certificate under Windows XP but report connection errors under OSX and Windows 2008 R2.

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• TFS2010 Hangs “Waiting for Build Agent”

  - by Qpirate

  I have asked this question over on SO the link to the question is here but i am hoping this is a better place to ask it. I have 3 VM's each running the TFS Build Host Service 1 has 1 controller and 1 agent 2 have 2 Build Agents each. Most of the time (7\10 builds) it comes back with the following error message TF215097: An error occurred while initializing a build for build definition BUILD_DEFINITION: There was no endpoint listening at http://MACHINE1:9191/Build/v3.0/Services/Controller/14 that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details. and there is no errors when i do get this message. the following is the config file that i have created <configuration> <appSettings> <add key="traceWriter" value="true"/> </appSettings> <system.diagnostics> <switches> <add name="BuildServiceTraceLevel" value="4"/> <add name="API" value="4"/> <add name="Authentication" value="4"/> <add name="Authorization" value="4"/> <add name="Database" value="4"/> <add name="General" value="4"/> <add name="traceLevel" value="4"/> </switches> <trace autoflush="true" indentsize="4"> <listeners> <add name="myListener" type="Microsoft.TeamFoundation.TeamFoundationTextWriterTraceListener,Microsoft.TeamFoundation.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" initializeData="c:\logs\TFSBuildServiceHost.exe.log" /> <remove name="Default" /> </listeners> </trace> </system.diagnostics> </configuration> I do have my own custom activities in my build process but this does not seem to be a problem as sometimes the build actually does go. I have tried refreshing the template as some sites suggest. Has anyone come across a solution for this problem? or can anyone tell me how to catch these errors when they happen?

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• Jetty interprets JETTY_ARGS as file name

  - by Lena Schimmel

  I'm running Jetty (version "null 6.1.22") on Ubuntu 10.04. It's running fine until I need JSP support. According to several blog posts I need to set the JETTY_ARGS to OPTIONS=Server,jsp. However, if I put this into /etc/default/jetty: JETTY_ARGS=OPTIONS=Server,jsp and restart Jetty via /etc/init.d/jetty stop && /etc/init.d/jetty start, it reports success, but does not accept connections. I notices that it logs something to /usr/share/jetty/logs/out.log: 2012-09-11 11:19:05.110:WARN::EXCEPTION java.io.FileNotFoundException: /var/cache/jetty/tmp/OPTIONS=Server,jsp (No such file or directory) at java.io.FileInputStream.open(Native Method) at java.io.FileInputStream.<init>(FileInputStream.java:137) at java.io.FileInputStream.<init>(FileInputStream.java:96) at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:87) at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:178) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:630) at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:189) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:776) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:741) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1208) at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:525) at javax.xml.parsers.SAXParser.parse(SAXParser.java:392) at org.mortbay.xml.XmlParser.parse(XmlParser.java:188) at org.mortbay.xml.XmlParser.parse(XmlParser.java:204) at org.mortbay.xml.XmlConfiguration.<init>(XmlConfiguration.java:109) at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:969) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.mortbay.start.Main.invokeMain(Main.java:194) at org.mortbay.start.Main.start(Main.java:534) at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177) That is, whatever I put into JETTY_ARGS, it inteprets is as a filename inside /var/cache/jetty/tmp/ and tries to parse that file as XML (or does it parse some other XML and tries to read that file as a DTD? I'm not sure.). This doesn't seem to make any sense to me, especially since that directory is entirely empty. I've verified this with several other Strings, not only OPTIONS=Server,jsp.

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• Force caching of handler output which actively resists caching

  - by deceze

  I'm trying to force caching of a very obnoxious piece of PHP script which actively tries to resist caching for no good reason by actively setting all the anti-cache headers: Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Content-Type: text/html; charset=UTF-8 Date: Thu, 22 May 2014 08:43:53 GMT Expires: Thu, 19 Nov 1981 08:52:00 GMT Last-Modified: Pragma: no-cache Set-Cookie: ECSESSID=...; path=/ Vary: User-Agent,Accept-Encoding Server: Apache/2.4.6 (Ubuntu) X-Powered-By: PHP/5.5.3-1ubuntu2.3 If at all avoidable I do not want to have to modify this 3rd party piece of code at all and instead just get Apache to cache the page for a while. I'm doing this very selectively to only very specific pages which have no real impact on session cookies or the like, i.e. which do not contain any personalised information. CacheDefaultExpire 600 CacheMinExpire 600 CacheMaxExpire 1800 CacheHeader On CacheDetailHeader On CacheIgnoreHeaders Set-Cookie CacheIgnoreCacheControl On CacheIgnoreNoLastMod On CacheStoreExpired On CacheStoreNoStore On CacheLock On CacheEnable disk /the/script.php Apache is caching the page alright: [cache:debug] AH00698: cache: Key for entity /the/script.php?(null) is http://example.com:80/the/script.php? [cache_disk:debug] AH00709: Recalled cached URL info header http://example.com:80/the/script.php? [cache_disk:debug] AH00720: Recalled headers for URL http://example.com:80/the/script.php? [cache:debug] AH00695: Cached response for /the/script.php isn't fresh. Adding conditional request headers. [cache:debug] AH00750: Adding CACHE_SAVE filter for /the/script.php [cache:debug] AH00751: Adding CACHE_REMOVE_URL filter for /the/script.php [cache:debug] AH00769: cache: Caching url: /the/script.php [cache:debug] AH00770: cache: Removing CACHE_REMOVE_URL filter. [cache_disk:debug] AH00737: commit_entity: Headers and body for URL http://example.com:80/the/script.php? cached. However, it is always insisting that the "cached response isn't fresh" and is never serving the cached version. I guess this has to do with the Expires header, which marks the document as expired (but I don't know whether that's the correct assumption). I've tried to overwrite and unset headers using mod_headers, but this doesn't help; whatever combination I try the cache is not impressed at all. I'm guessing that the order of operation is wrong, and headers are being rewritten after the cache sees them. early header processing doesn't help either. I've experimented with CacheQuickHandler Off and trying to set explicit filter chains, but nothing is helping. But I'm really mostly poking in the dark, as I do not have a lot of experience with configuring Apache filter chains. Is there a straight forward solution for how to cache this obnoxious piece of code?

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• Add user in CentOS 5

  - by Ron

  I created a new user in my CentOS web server with useradd. Added a password with passwd. But I can't log in with the user via SSH. I keep getting 'access denied'. I checked to make sure that the password was assigned and that the account is active. /var/log/secure shows the following error: Aug 13 03:41:40 server1 su: pam_unix(su:auth): authentication failure; logname= uid=500 euid=0 tty=pts/0 ruser=rwade rhost= user=root Please help, Thanks Thanks for the responses so far: I should add that it is a VPS on a remote computer, fresh out of the box. I can log in as the root user quite fine. I can also su to the new user, but I cannot log in as the new user. Here is my sshd_config file: # $OpenBSD: sshd_config,v 1.73 2005/12/06 22:38:28 reyk Exp $ # This is the sshd server system-wide configuration file. See # sshd_config(5) for more information. # This sshd was compiled with PATH=/usr/local/bin:/bin:/usr/bin # The strategy used for options in the default sshd_config shipped with # OpenSSH is to specify options with their default value where # possible, but leave them commented. Uncommented options change a # default value. #Port 22 #Protocol 2,1 Protocol 2 #AddressFamily any #ListenAddress 0.0.0.0 #ListenAddress :: # HostKey for protocol version 1 #HostKey /etc/ssh/ssh_host_key # HostKeys for protocol version 2 #HostKey /etc/ssh/ssh_host_rsa_key #HostKey /etc/ssh/ssh_host_dsa_key # Lifetime and size of ephemeral version 1 server key #KeyRegenerationInterval 1h #ServerKeyBits 768 # Logging # obsoletes QuietMode and FascistLogging #SyslogFacility AUTH SyslogFacility AUTHPRIV #LogLevel INFO # Authentication: #LoginGraceTime 2m #PermitRootLogin yes #StrictModes yes #MaxAuthTries 6 #RSAAuthentication yes #PubkeyAuthentication yes #AuthorizedKeysFile .ssh/authorized_keys # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts #RhostsRSAAuthentication no # similar for protocol version 2 #HostbasedAuthentication no # Change to yes if you don't trust ~/.ssh/known_hosts for # RhostsRSAAuthentication and HostbasedAuthentication #IgnoreUserKnownHosts no # Don't read the user's ~/.rhosts and ~/.shosts files #IgnoreRhosts yes # To disable tunneled clear text passwords, change to no here! #PasswordAuthentication yes #PermitEmptyPasswords no PasswordAuthentication yes # Change to no to disable s/key passwords #ChallengeResponseAuthentication yes ChallengeResponseAuthentication no # Kerberos options #KerberosAuthentication no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes #KerberosGetAFSToken no # GSSAPI options #GSSAPIAuthentication no GSSAPIAuthentication yes #GSSAPICleanupCredentials yes GSSAPICleanupCredentials yes # Set this to 'yes' to enable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication mechanism. # Depending on your PAM configuration, this may bypass the setting of # PasswordAuthentication, PermitEmptyPasswords, and # "PermitRootLogin without-password". If you just want the PAM account and # session checks to run without PAM authentication, then enable this but set # ChallengeResponseAuthentication=no #UsePAM no UsePAM yes # Accept locale-related environment variables AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT AcceptEnv LC_IDENTIFICATION LC_ALL #AllowTcpForwarding yes #GatewayPorts no #X11Forwarding no X11Forwarding yes #X11DisplayOffset 10 #X11UseLocalhost yes #PrintMotd yes #PrintLastLog yes #TCPKeepAlive yes #UseLogin no #UsePrivilegeSeparation yes #PermitUserEnvironment no #Compression delayed #ClientAliveInterval 0 #ClientAliveCountMax 3 #ShowPatchLevel no #UseDNS yes #PidFile /var/run/sshd.pid #MaxStartups 10 #PermitTunnel no #ChrootDirectory none # no default banner path #Banner /some/path # override default of no subsystems Subsystem sftp /usr/libexec/openssh/sftp-server

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