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• How to forward blocked ports by ISP

  - by KiDo

  So I've been trying to setup a TeamSpeak 3 server on my pc but ports (9987,10011,30033) are blocked by my ISP, I've contacted them to unblock them but they didn't accept, and it's the fastest ISP in my city (as living in a 3rd world country) so it's not a good idea to connect to another ISP. The thing is, I've tried Your-Freedom to connect to tunnel my connection & SocksCap. The problem is, when TS works with SocksCap it doesn't show a WAN-IP that friends will use to connect to my server It says "Needs to be Requested" and when I press the Request button, I get nothing. So, any idea what's wrong if someone has done this before? or if you have any other suggestion to run a TS server, would be very glad to hear it and really appreciate that. P.S. as I've mentioned before, living in a 3rd world country, makes me unable to buy a VPS even the cheapest one cause there's no Visa, Credit, or paypal. so that won't work. Thanks in advance.

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• Bind dns server in Solaris 10 and win xp clients

  - by stevecomptech

  Hi, Added this in zone db file, i am running solaris 10 _ldap._tcp.mydomain.com. SRV 0 0 389 dc.mydomain.com. _kerberos._tcp.mydomain.com. SRV 0 0 88 dc.mydomain.com. _ldap._tcp.dc._msdcs.mydomain.com. SRV 0 0 389 dc.mydomain.com. _kerberos._tcp.dc._msdcs.mydomain.com. SRV 0 0 88 host.mydomain.com. Now i get this error when i try to join win xp to the domain The query was for the SRV record for _ldap._tcp.dc._msdcs.mydomain.com The following domain controllers were identified by the query: host.mydomain.com Common causes of this error include: Host (A) records that map the name of the domain controller to its IP addresses are missing or contain incorrect addresses. Domain controllers registered in DNS are not connected to the network or are not running. What do i need to change in order my win xp join the domain

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• Web service not accessible from behind corporates firewalls - how come?

  - by Niro

  We run a Saas serving a widget which is embedded in customer websites. The service include static javascript code hosted on amazon S3 and dynamic part hosted on EC2 with Scalr (using scalr name servers). We received some feedback from users behind corporate firewalls that they cant access our service (while they can access the sites including the widget). This does not make sense to me since the service is using normal http calls on port 80 and our URL is quite new without any reason to be banned by firewalls. My questions are: 1. Why is the service is not accessible and what can I do about it? 2. Is it possible that one of the following is blocked by corporate firewalls: Amazon s3, the dynamic IP address provided by amazon, Scalr name servers. Any other possible reasons, way to check them and remedies for this? Thanks!

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• Virtualhost Wildcard Subdomains

  - by Khuram

  We have one static IP on which we have routed our company website. We have setup a local machine on windows with WAMP to run our testing server. We want virtual hosts to test our different apps. However, when creating subdomains, we have a new project which uses wildcard subdomains. How can we create the wildcard subdomains in VirtualHosts. We use, NameVirtualHost * <VirtualHost *> ServerAdmin admin@test DocumentRoot "E:/Wamp/www/corporate" ServerName companysite.com </VirtualHost> <VirtualHost *> ServerAdmin admin@test DocumentRoot "E:/Wamp/www/project" ServerName project.companysite.com </VirtualHost> <VirtualHost *> ServerAdmin admin@test DocumentRoot "E:/Wamp/www/project" ServerName *.project.companysite.com </VirtualHost> However, the last * wildcard does not work. Any help?

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• Is Winpcap able to capture all packets going through a Gigabit NIC without missing any packets?

  - by Patrick L

  I want to use Winpcap to capture all network packets going through a Gigabit NIC of a server. Assuming that I am able to utilize the network link up to 100%, the maximum network speed is 1000Mbps. If we exclude the TCP/IP headers, the maximum TCP data rate should be roughly 940Mbps. Let's say I send a 1GB file through the NIC at 940Mbps using TCP destination port 6000. I use Winpcap to capture all network packets going through the NIC and then dump it to a pcap file. If I use Wireshark to analyze the pcap file and then check the sum of packet size for all network packets sent to TCP port 6000, am I able to get exactly 1GB from the pcap file? Thanks.

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• How to detect when a user copies files from a server over the network?

  - by Mr. Graves

  I have a few virtual servers + desktops that are used for shared development with remote users, including some consultants. Each user has an account with access to most aspects of the server. I don't want to prevent people from being productive, or track passwords or read emails, but I do want to know when and what files they copy from the virtual server or what they upload from the server to a remote site, and what if any applications they install. This will help make sure my IP is protected, that no one is installing tools they shouldn't, and that things are licensed appropriately. What is the simplest way to do this? In order of importance I would say detecting file transfers off the machine to be most critical. Thanks

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• rkhunter warns of inode change by no file modification date changes

  - by Nicholas Tolley Cottrell

  I have several systems running Centos 6 with rkhunter installed. I have a daily cron running rkhunter and reporting back via email. I very often get reports like: ---------------------- Start Rootkit Hunter Scan ---------------------- Warning: The file properties have changed: File: /sbin/fsck Current inode: 6029384 Stored inode: 6029326 Warning: The file properties have changed: File: /sbin/ip Current inode: 6029506 Stored inode: 6029343 Warning: The file properties have changed: File: /sbin/nologin Current inode: 6029443 Stored inode: 6029531 Warning: The file properties have changed: File: /bin/dmesg Current inode: 13369362 Stored inode: 13369366 From what I understand, rkhunter will usually report a changed hash and/or modification date on the scanned files to, so this leads me to think that there is no real change. My question: is there some other activity on the machine that could make the inode change (running ext4) or is this really yum making regular (~ once a week) changes to these files as part of normal security updates?

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• Technicolor TG582n with external DHCP server [on hold]

  - by Jack

  We have a small home setup with a Technicolor TG582n on Plusnet ISP. We have a Samba4 DC with DNS forwarding enabled. The DC forwards to the Technicolor. However, the client machines have their DNS settings manually set. This is an annoyance when using laptops on other networks. We would like to have DHCP handled on the server machine, such that when a client connects to the Technicolor, it gets its IP and DNS information from the DHCP server, eliminating the need to manually set adapter DNS settings. However, I cannot find an option to disable DHCP on the Technicolor and am not completely clear on how one would point DHCP services to the server from the Technicolor if there were the option. So, how would one make the Technicolor use an external server for DHCP leases?

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• nginx proxy pass redirect through load balancer

  - by Brian

  I have several backend webservers that are load-balanced using LVS. These machines have only internal non-routable IPs on them. The load-balancer is the only machine with an external IP. This setup works great. I would like to add another webserver for image serving, but it will not be part of the load-balanced pool. Is it possible to proxy pass from the load-balanced web servers to the image server and have the response redirected to the client? Client--external LB--internal web server--internal image server I've gotten proxy pass working when I remove the LB from the equation, but no luck when trying to use it.

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• Recommendation for a non-standard SSL port

  - by onurs

  Hey guys, On our server I have a single IP, and need to host 2 different SSL sites. Sites have different owners so have different SSL certificates, and can't share the same certificate with SAN. So as a last resort I have modified the web application to give the ability to use a specified port for secure pages. For its simple look I used port 200. However I'm worried about some visitors may be unable to see the site because of their firewalls / proxies blocking the port for ssl connections. I heard some people were unable to see the website, a home user and someone from an enterprise company, don't know if this was the reason. So, any recommendations for a non-standard SSL port number (443 is used by the other site) which may work for visitors better than port 200 ? Like 8080 or 8443 perhaps? Thanks!

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• Timeouts when connecting to SQL Server since installing SP1 for Windows 7

  - by Julien

  Hi, I just installed SP1 for windows 7 and I have severe performance degradation when connecting to SQL Server 2005 since then. Establishing connection takes more than 30 seconds while it's instantaneous on another computer. Firewall is disabled and I didn't make any change to the configuration. It happens both when trying to connect with a hostname and with an ip address. Everything else seems to be fine (for instance, I'm have no issue connecting to other computers with remote desktop) What can cause such a problem? Thanks in advance! Edit : uninstalling the SP1 solves the issue instantly.

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• OS X clients ignoring Windows print server permissions

  - by Ilumiari

  I'm in the process of testing a Windows Server 2008 R2 print server for a mixed OS X/Windows environment. Any security permissions (AD groups) I set for the printers on the print server are not honoured by the OS X clients. Only if I remove absolutely all permissions for a given printer will an OS X client not print to that printer. The Windows clients honour the permissions as expected. The PrintService log doesn't record any activity when an unprivileged Windows client attempts to print, and records a typical print job when an unprivileged OS X client attempts to print. Has anyone encountered this problem before and have a fix? With 600-700 clients, a number of which are dual-booting, restricting by IP address is not viable. EDIT: The jobs are definitely going through the print server, they show up in the logs with their AD credentials.

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• Using wget to recursively download whole FTP directories

  - by user9406

  I want to copy all of the files and folders from one host to another. The files on the old host sit at /var/www/html and I only have FTP access to that server, and I can't TAR all the files. Regular connection to the old host through FTP brings me to the /home/admin folder. I tried running the following command form my new server: wget -r ftp://username:[email protected] But all I get is a made up index.html file. What the right syntax for using wget recursively over FTP?

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• Windows Server 2003 - passwordless access to \\myhost\ but not \\myhost.mydomain.net\

  - by Charles Duffy

  I have a Windows Server 2003 system on which passwordless access to local UNC paths is possible using the server's unqualified hostname or its IP address, but not via its FQDN -- even when the hosts file is used to map that FQDN directly to 127.0.0.1. That is: \\127.0.0.1\ - passwordless \\myhost\ - passwordless \\myhost.mydomain.com\ - brings up an authentication dialog Unfortunately, I have a local application trying to resolve UNC paths including the host's FQDN. I've tried resolving myhost.mydomain.com to 127.0.0.1 in both hosts and lmhosts, and calling ping myhost.mydomain.com at the command prompt gives the appearance that this resolution has taken effect; even so, attempting to open \\myhost.mydomain.com\ from Windows Explorer brings up a password prompt, while \\127.0.0.1\ does not. The system is using an OpenDirectory server (Apple's Kerberos+LDAP directory service) for authentication.

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• Sendmail /etc/hosts and DNS ... what is the correct way?

  - by ben

  I found one tutorial on setting up sendmail that says that in the /etc/hosts file, "The entry for 127.0.0.1 must always be followed by the fully qualified domain name (FQDN) of the server." Like so: 127.0.0.1 bigboy.my-site.com localhost.localdomain localhost bigboy (This tutorial is here). However, I can't find anyone else suggesting something like that. instead most people seem to put some combination of localhost and localdomain.localhost after 127.0.0.1, and then some variant of the fully qualified domain name after the public ip address. What is the correct way?

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• Windows Server 2008 R2 DNS Server not working?

  - by wolfvilleian

  I have a server running Windows Server 2008 R2 hosting a DNS server, exchange 2010 and is a domain controller. One computer on the network (and domain) can ping the server 25% of the time, also when I try to ping it's own hostname it also does not work. However another computer that is on the domain can ping it fine, and another computer on the network but not domain can ping fine as well. The computer that cannot ping the server is setup to use the DNS server running on the server only (secondary dns points to nothing) and it will resolve the hostname of the server to the external IP not internal when the other two computers correctly resolve the internal All 3 computers and server are connected directly into the same switch. Does anyone have any ideas on how to fix this? Thanks

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• Configuring squid as reverse proxy

  - by Hassan

  I am having trouble configuring squid to work as reverse proxy here is my scenario squid is installed on server with ip 10.1.1.139 I have another computer that is acting as my proxy server 10.1.85.106 which has access to 10.1.85.106/program I want 10.1.1.139/program to be redirected to 10.1.85.106 I have added cache_peer 10.1.85.106 parent 80 0 no-query originserver name=server_1 cache_peer_domain server_1 /program /program/ program when I go to 10.1.1.139/program I get "The following error was encountered while trying to retrieve the URL: /program Invalid URL" Since the error is not related to access denied I don't think it is due to access restrictions. Do I need to add anything else? Thanks for your time

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• Can I ping via an arbitrary interface of a DD-WRT system?

  - by bytebuster

  There's a Linksys WRT54GL router with DD-WRT firmware (v23SP2). The network has a simple dual-WAN configuration (standby mode, switching by a script): ~ # ip route 192.168.3.0/24 dev br0 proto kernel scope link src 192.168.3.1 192.168.2.0/24 dev vlan2 proto kernel scope link src 192.168.2.2 192.168.1.0/24 dev vlan1 proto kernel scope link src 192.168.1.67 127.0.0.0/8 dev lo scope link default via 192.168.2.1 dev vlan2 I'm trying to ping a certain server arbitrary via vlan1 or vlan2. What I tried, as suggested here: ping -I vlan2 <address> ping 192.168.2.1 <address> In both cases ping simply exits with no error messages. Also, ping ignores many other parameters, again, by exiting silently. I failed to find any references that DD-WRT has a limited version of ping whatsoever. I also don't think it can be a permissions issue as mentioned here since the only user with DD-WRT is root. What's wrong?

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• Windows Server 2008 SOMETIMES blocks connection to an FTP Site

  - by ssilver2k2

  Hello Everyone Recently, our company has been having issue connecting to a special FTP server that we use offsite to upload small files. We can connect to the test server perfectly fine, but when we use the production ftp, it only randomly connects. If I plug my laptop directly into the modem and pull one of our other static IP addresses, I can connect just fine, but if I use our internal network, it is hit or miss. Also, turning OFF the firewall does NOT change the status of our connection problems. It will still time out. The weird issue is that it sometimes works, and when it does, it instantly asks for credentials and logs us on for that session, but if we disconnect and try again, it may or may not work. This also coincidentally occurred after uninstalling hamachi, and it blew away our internet settings on our Windows Server 2008 box, but everything else is working fine, and it was working fine before hamachi was installed.

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• UDP Reverse Proxy

  - by user180195

  I have found a way to make reverse-proxy to an external IP. Here is how someone making a request will see it's request being passed: Clients sends request Request reaches the Datacenter one in some place That datacenter, acting as a reverse proxy will redirect the same exact request to another datacenter. The datacenter will then process the request Although, this only works with TCP/HTTP (Looking currently at HaProxy). I am hosting game servers at the other datacenter (where the proxy is not) that are using UDP protocol. Do you know how can I setup a reverse proxy using the UDP protocol.

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• A design for watching IPTV anywhere in the house?

  - by Carlos

  I'm currently getting TV and internet via IP to my house. The service comes into an ISP-supplied Router (ST585) which is in turn connected to an IPTV box. I need to replace the router, as it's port forwarding seems to be broken, so I was thinking of getting a box with an IGMP proxy. I once mistakenly got a non-IGMP box, with the result that the internet worked, but the IPTV didn't. The trouble is, I have no idea how to set up the IPTV part of the installation. I do have a copy of the ST585 configuration, but it doesn't look anything like the Cisco stuff that I learned about at CCNA. What are the steps necessary to reproduce the IGMP setup? I was thinking of WireSharking the communications on the network, but I suppose I'd need a hub for that? As a bonus, since the packets are coming in with the TV signal, is it possible to mess with the IGMP setup so I can watch TV anywhere in the house?

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• A design for watching IPTV anywhere in the house?

  - by Carlos

  I'm currently getting TV and internet via IP to my house. The service comes into an ISP-supplied Router (ST585) which is in turn connected to an IPTV box. I need to replace the router, as it's port forwarding seems to be broken, so I was thinking of getting a box with an IGMP proxy. I once mistakenly got a non-IGMP box, with the result that the internet worked, but the IPTV didn't. The trouble is, I have no idea how to set up the IPTV part of the installation. I do have a copy of the ST585 configuration, but it doesn't look anything like the Cisco stuff that I learned about at CCNA. What are the steps necessary to reproduce the IGMP setup? I was thinking of WireSharking the communications on the network, but I suppose I'd need a hub for that? As a bonus, since the packets are coming in with the TV signal, is it possible to mess with the IGMP setup so I can watch TV anywhere in the house?

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• Apache does not serve non-locally

  - by yodaj007

  I have a freshly installed instance of Fedora Core 16 inside VirtualBox using bridged networking. On it, as root I typed in: yum -y install httpd service httpd start ifconfig Inside the VM, I can open a web browser to 'localhost' and I get the Apache test page. It works. But in Windows (the machine hosting the VM), I point my browser to the IP address returned by ifconfig (192.168.2.122). The connection times out. I can go to a command prompt and ping the VM. Is there a firewall or something that comes with Fedora by default? Or is there something I need to change in a config file?

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• Computers "applying computer settings" for a long time on start-up...why?

  - by tombull89

  Hello. Might be a bit of a slong shot but I'm stumped, along with the ICT Manager for the school I'm working it. In one of the IT rooms when you switch a computer on it will boot through BIOS fine, but when it gets to "applying computer settings" it can hang for a long time (~15 minutes). If you unplug the computer from the network it starts up fine, gets to the login screen, then you can plug the network cable in and it will work fine. I don't think it's anything to do with the fact we've been coming close to running out of IP addresses or a problem with our DHCP. Microsoft KB says apply the latest service pack, which we've done, and check a service. Servers and domian controllers are S2003, Computers and Desktops are XP. Does anybody have any thoughts on what to try?

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• Sendmail problem

  - by trobrock

  I am trying to get my server to be able to send email from PHP. Currently it is using send mail, but whenever I try to send mail to a gmail address I get this sort of response: --o54Mqd5s008981.1275691959/ServerName Content-Type: message/delivery-status Reporting-MTA: dns; ServerName Received-From-MTA: DNS; localhost Arrival-Date: Fri, 4 Jun 2010 22:52:38 GMT Final-Recipient: RFC822; [email protected] Action: failed Status: 5.7.1 Remote-MTA: DNS; gmail-smtp-in.l.google.com Diagnostic-Code: SMTP; 550-5.7.1 [xxx.xxx.xxx.xxx] The IP you're using to send mail is not authorized Last-Attempt-Date: Fri, 4 Jun 2010 22:52:39 GMT How can I set this up to relay through a google account that I own? Is sendmail the best thing to use, or should I switch to Postfix or something? This is on an Ubuntu Server 9.10

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