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  • Unable to login through varnish cache

    - by ArunS
    I am setting up Active Collab Site in my new server. The setup is like below Internet --- varnish ---- apache But i am not able to login to the site through varnish cache.. But i can login to site through apache. Here is my VCL file backend default { .host = "localhost"; .port = "8080"; } acl purge { "localhost"; } sub vcl_recv { if (req.request == "PURGE") { if (!client.ip ~ purge) { error 405 "Not allowed."; } return(lookup); } if (req.url ~ "^/$") { unset req.http.cookie; } } sub vcl_hit { if (req.request == "PURGE") { set obj.ttl = 0s; error 200 "Purged."; } } sub vcl_miss { if (req.request == "PURGE") { error 404 "Not in cache."; } if (!(req.url ~ "wp-(login|admin)")) { unset req.http.cookie; } if (req.url ~ "^/[^?]+.(jpeg|jpg|png|gif|ico|js|css|txt|gz|zip|lzma|bz2|tgz|tbz|html|htm)(\?.|)$") { unset req.http.cookie; set req.url = regsub(req.url, "\?.$", ""); } if (req.url ~ "^/$") { unset req.http.cookie; } } sub vcl_fetch { if (req.url ~ "^/$") { unset beresp.http.set-cookie; } if (!(req.url ~ "wp-(login|admin)")) { unset beresp.http.set-cookie; }} When i try to login through varnish i was redirect back to login page. If i enter wrong password, then it will ask for enter correct password.

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  • nfs mount with nfs 3

    - by rahrahruby
    I am running CentOS 6.4 Kernel version 2.6.32-358.23.2.el6.x86_64 #1 SMP and have the following nfs info: nfs-utils-lib-1.1.5-6.el6.x86_64 nfs4-acl-tools-0.3.3-6.el6.x86_64 nfs-utils-1.2.3-36.el6.x86_64 and am trying to mount an nfs volume with nfs3. I have the following line in my fstab: 172.16.11.87:/volume1/web /home/nas nfsver=3 rsize=8192,wsize=8192,timeo=14,intr(no_root_squach) When I run nfsstat it still shows the client as nfs4 Server rpc stats: calls badcalls badauth badclnt xdrcall 0 0 0 0 0 Client rpc stats: calls retrans authrefrsh 1988817 6 1988818 Client nfs v4: null read write commit open open_conf 0 0% 36943 1% 21606 1% 401 0% 392369 19% 375986 18% open_noat open_dgrd close setattr fsinfo renew 0 0% 0 0% 387945 19% 22904 1% 3 0% 2914 0% setclntid confirm lock lockt locku access 1 0% 1 0% 0 0% 0 0% 0 0% 97856 4% getattr lookup lookup_root remove rename link 613996 30% 29888 1% 1 0% 1248 0% 253 0% 414 0% symlink create pathconf statfs readlink readdir 26 0% 226 0% 2 0% 3 0% 0 0% 3825 0% server_caps delegreturn getacl setacl fs_locations rel_lkowner 5 0% 0 0% 0 0% 0 0% 0 0% 0 0% exchange_id create_ses destroy_ses sequence get_lease_t reclaim_comp 0 0% 0 0% 0 0% 0 0% 0 0% 0 0% layoutget layoutcommit layoutreturn getdevlist getdevinfo ds_write 0 0% 0 0% 0 0% 0 0% 0 0% 0 0% ds_commit 0 0%

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  • How does Tunlr work?

    - by gravyface
    For those of you not in the US, Tunlr uses DNS witchcraft to allow you to access US-only (and UK-only stuff like BBC radio online) services and Websites like Hulu.com, etc. without using traditional methods like a VPN or Web proxy. From their FAQ: Tunlr does not provide a virtual private network (VPN). Tunlr is a DNS (domain name system) unblocking service. We’re using sophisticated technologies (a.k.a. the Tunlr Secret Sauce ©) to re-adress certain data envelopes, tricking the receiver into thinking the envelope originated from within the U.S. For these data envelopes, Tunlr is transparently creating a network tunnel from your location to our U.S.-based servers. Any data that’s not directly related to the video or music content providers which Tunlr supports is not only left untouched, it’s also not even routed through Tunlr. In order to use Tunlr, you will have to change the DNS address. See Get started for more information. I can't really wrap my head around how this works; I have always assumed that these services performed a geolocation lookup via your client IP. Just really curious as to how this works. EDIT 2 I believe they're only proxying the initial geo check and then modifying the data stream request to include your real IP address so that the streaming is direct, not proxied.

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  • iptables to block VPN-traffic if not through tun0

    - by dacrow
    I have a dedicated Webserver running Debian 6 and some Apache, Tomcat, Asterisk and Mail-stuff. Now we needed to add VPN support for a special program. We installed OpenVPN and registered with a VPN provider. The connection works well and we have a virtual tun0 interface for tunneling. To archive the goal for only tunneling a single program through VPN, we start the program with sudo -u username -g groupname command and added a iptables rule to mark all traffic coming from groupname iptables -t mangle -A OUTPUT -m owner --gid-owner groupname -j MARK --set-mark 42 Afterwards we tell iptables to to some SNAT and tell ip route to use special routing table for marked traffic packets. Problem: if the VPN failes, there is a chance that the special to-be-tunneled program communicates over the normal eth0 interface. Desired solution: All marked traffic should not be allowed to go directly through eth0, it has to go through tun0 first. I tried the following commands which didn't work: iptables -A OUTPUT -m owner --gid-owner groupname ! -o tun0 -j REJECT iptables -A OUTPUT -m owner --gid-owner groupname -o eth0 -j REJECT It might be the problem, that the above iptable-rules didn't work due to the fact, that the packets are first marked, then put into tun0 and then transmitted by eth0 while they are still marked.. I don't know how to de-mark them after in tun0 or to tell iptables, that all marked packet may pass eth0, if they where in tun0 before or if they going to the gateway of my VPN provider. Does someone has any idea to a solution? Some config infos: iptables -nL -v --line-numbers -t mangle Chain OUTPUT (policy ACCEPT 11M packets, 9798M bytes) num pkts bytes target prot opt in out source destination 1 591K 50M MARK all -- * * 0.0.0.0/0 0.0.0.0/0 owner GID match 1005 MARK set 0x2a 2 82812 6938K CONNMARK all -- * * 0.0.0.0/0 0.0.0.0/0 owner GID match 1005 CONNMARK save iptables -nL -v --line-numbers -t nat Chain POSTROUTING (policy ACCEPT 393 packets, 23908 bytes) num pkts bytes target prot opt in out source destination 1 15 1052 SNAT all -- * tun0 0.0.0.0/0 0.0.0.0/0 mark match 0x2a to:VPN_IP ip rule add from all fwmark 42 lookup 42 ip route show table 42 default via VPN_IP dev tun0

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  • How browsers handle multiple IPs

    - by Sandman4
    Can someone direct me to information on exact browsers behavior when browser gets multiple A records for a given hostname (say ip1 and ip2), and one of them is not accessible. I interested in EXACT details, like (but not limited to): Will browser get 2 IPs from OS, or it will get only one ? Which ip will browser try first (random or always the first one) ? Now, let's say browser started with the failed ip1 For how long will browser try ip1 ? If user hits "stop" while it waits for ip1, and then clicks refresh which IP will browser try ? What will happen when it times-out - will it start trying ip2 or give error ? (And if error, which ip will browser try when user clicks refresh). When user clicks refresh, will any browser attempt new DNS lookup ? Now let's assume browser tried working ip2 first. For the next page request, will browser still use ip2, or it may randomly switch ips ? For how long browsers keep IPs in their cache ? When browsers sends a new DNS request, and get SAME ips, will it CONTINUE to use the same known-to-be-working IP, or the process starts from scratch and it may try any of the two ? Of course it all may be browser dependent, and may also vary between versions and platforms, I'd be happy to have maximum of details. The purpose of this - I'm trying to understand what exactly users will experience when round-robin DNS based used and one of the hosts fails. Please, I'm NOT asking about how bad DNS load balancing is, and please refrain from answering "don't do it", "it's a bad idea", "you need heartbeat/proxy/BGP/whatever" and so on.

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  • LDAP Account Locked Out Sporadically after Password change - Finding the source of invalid attempts

    - by CityView
    On a small network of machines (<1000) we have a user whose account is being locked out after an indeterminate interval following a password change. We are having severe difficulties finding the source of the invalid logon attempts and I would appreciate it greatly if some of you could go through your thought process and the checks you would perform in order to fix the problem. All I know for sure is that the account is locked out several (5+) times a day, I can't even be sure it's due to failed login attempts as there is no record of failure until the account is locked. So far I have tried; Logging the account out of everything we can think of and back in with the new password Scanning the user's box for any non standard software which might perform an LDAP lookup Checking all installed services on our production boxes to check none are attempting to run under the account Changing the user back to their old password (Problem persists so perhaps password change is a red herring) Wireshark on a box where lots of LDAP authentication is performed - Rejects only occur after account is already locked out Clearing the credential cache in - Control Panel - User Accounts - Advanced Looking at the local I'm at a loss for what to try. I am happy to try any suggestions you have in order to diagnose the issue. I think my question boils down to a simple request; I need a technique for deriving the source (Application/Host) of the invalid login attempts which are causing the account to be locked. I'm not sure if that's even possible but I suspect there must be more I can try. Many thanks, CityView

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  • DNS resolve .com domain on local domain

    - by Joost Verdaasdonk
    I'm building a local 2008 R2 domain as a test case to be able to write a roadmap for the real new domain that needs to be created soon. What I would like to know if I'm able to make a record in DNS that will point the domain name: www.example.com and example.com to one of the servers in my network. I tried creating an a-record for it but that doesn't work. To be honest I'm not even sure if this is possible? So can I do this? That way I would be able to fully test all our services (and webb app) offline before I build the real domain and switch the DNS records at the provider. Some advice if possible and where to start is appreciated. The solution (Thanks Brent): Create new Forward lookup zone pointing to example.com Create empty A record pointing to IP of the webserver you are targeting If www is needed create A record with Name: www and IP of your webserver sub domains repeat the process but then with names for example: sub or www.sub (and ip your webserver) Be aware of the DNS Cache while you are in this process. Things can take time or do the following: Right click the server and choose clear cache in CMD: ipconfig /flushdns (to flush the client cache)

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  • Exchange 2007 with Android activesync

    - by lbanz
    A few of our users noticed that it will stop working intermittently for them. I didn't believe it at first until I changed my android phone and it started occuring for me. It will just stop syncing completely, it looks like the server is blocking the device completely. This mainly occurs when they are using the wifi. I've done some testing. If I switch off the wifi and use the phone data plan it will work fine. When it's on the wifi network, I try and browse to the webmail/owa page and it says page not found! I did a dns lookup and they resolve correctly. If I use another device on the same wifi network, it can access the exchange servers fine. Sometimes the wifi network will just work without any issues. But when it fails, it looks like the phone constantly checks the server every second to see if it is online even though I've got it on manual sync. I was wondering whether it tries to sync too many times and exchange thinks its a denial service attack. My old android phone that works is Froyo and the new one is Icecream. People who have reported issues seems to be newer phones. They also tested their own wifi network at home and experience the same problem. We haven't patch our exchange recently before seeing this problem. Anyone has seen this issue?

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  • Caching all files in varnish

    - by csgwro
    I want my varnish servers to cache all files. At backend there is lighttpd hosting only static files, and there is an md5 in the url in case of file change, ex. /gfx/Bird.b6e0bc2d6cbb7dfe1a52bc45dd2b05c4.swf). However my hit ratio is very poorly (about 0.18) My config: sub vcl_recv { set req.backend=default; ### passing health to backend if (req.url ~ "^/health.html$") { return (pass); } remove req.http.If-None-Match; remove req.http.cookie; remove req.http.authenticate; if (req.request == "GET") { return (lookup); } } sub vcl_fetch { ### do not cache wrong codes if (beresp.status == 404 || beresp.status >= 500) { set beresp.ttl = 0s; } remove beresp.http.Etag; remove beresp.http.Last-Modified; } sub vcl_deliver { set resp.http.expires = "Thu, 31 Dec 2037 23:55:55 GMT"; } I have made an performance tuning: DAEMON_OPTS="${DAEMON_OPTS} -p thread_pool_min=200 -p thread_pool_max=4000 -p thread_pool_add_delay=2 -p session_linger=100" The main url which is missed is... /health.html. Is that forward to backend correctly configured? Disabling health checking hit ratio increases to 0.45. Now mostly "/crossdomain.xml" is missed (from many domains, as it is wildcard). How can I avoid that? Should I carry on other headers like User-Agent or Accept-Encoding? I thing that default hashing mechanism is using url + host/IP. Compression is used at the backend. What else can improve performance?

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  • Stepmania + KDE4 = sound problem

    - by picca
    I cannot manage to get KDE4 + stepmania working. If I run StepMania I always get: StepMania 3.9 Log starting 2010-12-24 14:52:48 Loading window: gtk OS: Linux ver 020636 Crash backtrace component: x86 custom backtrace Crash lookup component: dladdr Crash demangle component: cxa_demangle Runtime library: glibc 2.11.2 Threads library: NPTL 2.11.2 TLS is available ALSA: Advanced Linux Sound Architecture Driver Version 1.0.23. ALSA Driver: 0: HDA ATI SB [SB], device 0: STAC92xx Analog [STAC92xx Analog], 0/1 subdevices avail ALSA Driver: 0: HDA ATI SB [SB], device 1: STAC92xx Digital [STAC92xx Digital], 1/1 subdevices avail Couldn't load driver ALSA: dsnd_pcm_open(hw:0): Device or resource busy Mixing 0.000000 ahead in 0 Mix() calls Couldn't load driver ALSA-sw: dsnd_pcm_open(hw:0): Device or resource busy Mixing 0.000000 ahead in 0 Mix() calls Couldn't load driver OSS: RageSound_OSS: Couldn't open /dev/dsp: Device or resource busy Language: english Theme: default Error: Couldn't find a sound driver that works I found that in StepMania/Data/StepMania.ini I should add following line: SoundDevice=default That enables me to run StepMania, but I don't have any sound. Which is pretty bad for an application like this one. I'm quite sure that the problem is in phonon that is blocking the audio device to which StepMania needs to access directly. I think that I can fix this if I run other (lighter) window-manager than KDE4. But that is not a solution occasional linux user. Do I have any chance to get StepMania under KDE4 completely working?

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  • nginx hackery : change image file every X request

    - by Vangel
    Let me describe what I am trying to do first. I have a bunch of pictures in a directory called /images/*.(jpg|gif|png|blah blah|) Now say these images are embedded in an html page and I dont really care which image or where its embedded. For every 10th request for the same picture file (if possible) or for any picture I want to display a fixed image (e.g. trollface.jpg). thats it! I have searched around a bit but i am not even sure what I am looking for. Rewrite might help but then its a permanent thing. this has got to do something with requests. I have heard perl scripts can be used with nginx. I can't write an nginx module (though I did bravely lookup the docs and then gave up) Before you ask "But why don't you do it in application, noob?". This is a static files only server. The point is to not execute any binary at all.

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  • Where do these mysterious DNS lookups come from and why are they slow?

    - by Hongli
    I have recently obtained a new dedicated server which I'm now setting up. It's running on 64-bit Debian 6.0. I have cloned a fairly large git repository (177 MB including working files) onto this server. Switching to a different branch is very very slow. On my laptop it takes 1-2 seconds, on this server it can take half a minute. After some investigation it turns out to be some kind of DNS timeout. Here's an exhibit from strace -s 128 git checkout release: stat("/etc/resolv.conf", {st_mode=S_IFREG|0644, st_size=132, ...}) = 0 socket(PF_INET, SOCK_DGRAM|SOCK_NONBLOCK, IPPROTO_IP) = 5 connect(5, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("213.133.99.99")}, 16) = 0 poll([{fd=5, events=POLLOUT}], 1, 0) = 1 ([{fd=5, revents=POLLOUT}]) sendto(5, "\235\333\1\0\0\1\0\0\0\0\0\0\35Debian-60-squeeze-64-minimal\n\17happyponies\3com\0\0\1\0\1", 67, MSG_NOSIGNAL, NULL, 0) = 67 poll([{fd=5, events=POLLIN}], 1, 5000) = 0 (Timeout) This snippet repeats several times per 'git checkout' call. My server's hostname was originally Debian-60-squeeze-64-minimal. I had changed it to shell.happyponies.com by running hostname shell.happyponies.com, editing /etc/hostname and rebooting the server. I don't understand the DNS protocol, but it looks like Git is trying to lookup the IP for Debian-60-squeeze-64-minimal as well as for happyponies.com. Why does Debian-60-squeeze-64-minimal come back even though I've already changed the host name? Why does Git perform DNS lookups at all? Why are these lookups so slow? I've already verified that all DNS servers in /etc/resolv.conf are up and responding slowly, yet Git's own lookups time out. Changing the host name back to Debian-60-squeeze-64-minimal seems to fix the slowness. Basically I just want to fix whatever DNS issues my server has because I'm sure they will cause more problems that just slowing down git checkout. But I'm not sure sure what the problem exactly is and what these symptoms mean.

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  • How to route broadcast packets from machine with two network interfaces on same subnet

    - by Syam
    I run RHEL 5 and have two NICs on one machine connected to the same subnet: eth0 192.168.100.10 eth1 192.168.100.11 My application needs to receive and transmit UDP packets (both unicast & broadcast) via these interfaces. I've found the way to handle the ARP problem and I've added routes to handle the routing problem: ip rule add from 192.168.100.10 lookup 10 ip route add table 10 default src 192.168.100.10 dev eth0 (and similarly, table 11 for eth1) The problem is that only unicast packets gets routed properly. Broadcast packets always go out through eth0. I tried removing the rule for 192.168.100.0 & 192.168.100.255 from table 255 and adding them to my tables. But then I see ARP requests being given out for packets to 192.168.100.255 (obviously, no nodes respond and nobody gets any data). Due to several techno-political issues, I'm stuck with this configuration and can't change subnets or try something different. I've tried SO_BINDTODEVICE and it works, but I'd prefer a solution that doesn't need my application to run as root. Is there a way to get this working? Any help is highly appreciated.

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  • Does SNI represent a privacy concern for my website visitors?

    - by pagliuca
    Firstly, I'm sorry for my bad English. I'm still learning it. Here it goes: When I host a single website per IP address, I can use "pure" SSL (without SNI), and the key exchange occurs before the user even tells me the hostname and path that he wants to retrieve. After the key exchange, all data can be securely exchanged. That said, if anybody happens to be sniffing the network, no confidential information is leaked* (see footnote). On the other hand, if I host multiple websites per IP address, I will probably use SNI, and therefore my website visitor needs to tell me the target hostname before I can provide him with the right certificate. In this case, someone sniffing his network can track all the website domains he is accessing. Are there any errors in my assumptions? If not, doesn't this represent a privacy concern, assuming the user is also using encrypted DNS? Footnote: I also realize that a sniffer could do a reverse lookup on the IP address and find out which websites were visited, but the hostname travelling in plaintext through the network cables seems to make keyword based domain blocking easier for censorship authorities.

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  • Connecting to a subdomain severs the connection to the domain itself. What's going on?

    - by TheAgent
    Hi all. We have a website on a third-party server (server leased and shared with other websites) and the server provides access to our SQL Server database through a subdomain in the form of mssql.DomainName.com. I was told to use SQL Management Studio Express to connect to this subdomain in order to manage the database. After a few tries and getting many "Timeout" messages, I finally manage to connect to the server; everything's fine. But now I can't connect to DomainName.com anymore. Trying to browse DomainName.com using Firefox, it tries to "lookup" DomainName.com address and fails, telling me "the server was not found". I have to disconnect Management Studio from the server and wait a couple of hour for DomainName.com to become available again, and after that, trying to reconnect to the SQL Server again repeats the scenario. While I can't browse DomainName.com directly, I can use a proxy to connect to it, meaning that the problem is somehow related to a DNS my computer tries to ask to translate the name to the corresponding IP. Anyone seen anything like this before? Any ideas? Thanks in advance.

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  • Amavisd-new(2.6.4-3) failing to do "lookup_sql_dsn" when large number of emails are need to be accessed

    - by sandip
    Amavis is failing to do sql lookup when large number of emails are sent to amavis. Its throwing out error after scanning 40 to 50 email. It shows error like. (!!)TROUBLE in process_request: sql exec: err=7, 57P01,DBD::Pg::st bind_param failed:FATAL: terminating connection due to administrator command\nSSL connection has been closed unexpectedly at (eval 103) line 164, <GEN50> line 5. at (eval 104) line 280, <GEN50> line 5. As soon as this error appears in the logs, Amavis stops and port 10024 is closed. Thinking it to an error due to ssl connection in the database(postgresql-8.4), i had stopped ssl in postgres, but it was of no use. I have tried to configure amavis on another server, but i got the same error again. This happening on a production server, So i am not being able to scan emails as per user settings. Anybody have any idea, what may be the source of this error ?? Please help. Thanks in advance

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  • Is there a local yubnub.org replacement?

    - by Justin Keogh
    I use yubnub very often... every google search I do by just (in firefox) "ctrl-t" - (now in the url bar) "y g searchterms" [Enter] "y" in this case is a search keyword I added by right clicking in the yubnub.org command box it's really fast, and I just do it automatically now... but the problem is now I am stuck with whatever the yubnub command that I am so used to using does. I cant change it... for example, what if I dont want to use google... but I still want to use the "g" command to search? or say I want to use google's https search... ect... I suppose this would be kinda trivial to implement locally... but I would hate to re-invent the code if it's allready done and in use... ideas? Also a local yubnub.org replacement would save me the DNS lookup and traffic to yubnub.org. I dont expect to be able to import all commands from yubnub.org but that would be cool if possible.

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  • Only one domain is not resolving via Windows DNS server at multiple locations, but is at others

    - by Brett G
    I'm having quite a weird issue. Had mail delivery issues to a specific domain. After looking closer, I realized that the DNS for that domain isn't resolving via the in-house Windows 2003 SP2 DNS server. C:\>nslookup foodmix.net Server: DC.DOMAIN.com Address: 10.1.1.1 DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. *** Request to DC.DOMAIN.com timed-out (DC.DOMAIN.com and 10.1.1.1 are generic values to replace the actual ones) Even if I run this nslookup from the DC.DOMAIN.com server, I get the same result. However, all other requests are working as they should. I had a sysadmin friend try this DNS lookup on servers at several companies that he consults for (which are also Windows 2003 AD servers). The weird thing is some of these were having the same exact issue. However using public DNS servers work. I have tried clearing the DNS cache, restarting the server, restarting the services, etc. Nothing has worked. One weird event I noticed in the DNS Server Event Logs that might be related is an event ID of 5504 with the following description: The DNS server encountered an invalid domain name in a packet from 192.33.4.12. The packet will be rejected. The event data contains the DNS packet. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. In the data section below, I can see the following mentioned: ns2.webhostingstar.com Which happens to be the nameserver for the domain in question. Several discussion threads and a MS KB have pointed to disabling EDNS. I have done this via "dnscmd /config /enableednsprobes 0" and it has not fixed the issue.

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  • Juniper SSG20 IP settings for email server

    - by codemonkie
    We have 5 usable external static IP addresses leased by our ISP: .49 to .53, where .49 is assigned to the Juniper SSG20 firewall and NATed for 172.16.10.0/24 .50 is assigned to a windows box for web server and domain controller .51 is assigned to another windows box with exchange server (domain: mycompany1.com) mx record is pointing to 20x.xx.xxx.51 Currently there is a policy set for all SMTP incoming traffic addressed to .51 forward to the NATed address of the exchange server box (private IP: 172.16.10.194). We can send and receive emails for both internal and external, but the gmail is saying mails from mycomany1.com is not sent from the same IP as the mx lookup however is from 20x.xx.xxx.49: Received-SPF: neutral (google.com: 20x.xx.xxx.49 is neither permitted nor denied by best guess record for domain of [email protected]) client-ip=20x.xx.xxx.49; Authentication-Results: mx.google.com; spf=neutral (google.com: 20x.xx.xxx.49 is neither permitted nor denied by best guess record for domain of [email protected]) [email protected] and the mx record in global dns space as well as in the domain controller .50 for mail.mycompany1.com is set to 20x.xx.xxx.51 My attempt to resolve the above issue is to Update the mx record from 20x.xx.xxx.51 to 20x.xx.xxx.49 Create a new VIP for SMTP traffic addressed to 20x.xx.xxx.49 to forward to 172.16.10.194 After my changes incoming email stopped working, I believe it has something to do with the Juniper setting that SMTP addressed to .49 is not forwarded to 172.16.10.194 Also, I have been wondering is it mandatory to assign an external static IP address to the Juniper firewall? Any helps appreciated. TIA

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  • How can I get multiple video cards to work on linux?

    - by user17943
    I installed fedora 12. I have 2 ATI cards that I used to use on windows to run 4 monitors. A recurring problem has been to get them detected in linux. Only my secondary card is picked up linux. When I manage the displays it detects the 2 monitors connected that card. What are the specific steps I should take to get the second card detected? Supposedly there is a tool system-config-xfree. I don't have it, yum can't find it. Also I heard it has something to do with editing some xorg.conf file or something to that effect. I have absolutely no idea how to find the "bus id" of my card, or lookup the horizontal refresh rates, etc.. I would probably have no problem following the documentation & editing the file if I knew a good way to find these values. Someone also suggested installing linux twice and saving the xorg.conf it generates each time (with different card each time) and then merging the two by hand. That is like killing a fly with a hammer though, when I do this again and again in the future It'd be nice to not have to take twice as long. Thanks

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  • Can varnish cache files without specific extension or residing in specific directory

    - by pataroulis
    I have a varnish installation to cache (MANY) images that my service serves. It is about 200 images of around 4k per second and varnish happily serves them according to the following rule: if (req.request == "GET" && req.url ~ "\.(css|gif|jpg|jpeg|bmp|png|ico|img|tga|wmf)$") { remove req.http.cookie; return(lookup); } Now, the thing is that I recently added another service on the same server that creates thumbnails to serve but it does not add a specific extension. The files are of the following filename pattern: http://www.example.com/thumbnails/date-of-thumbnail/xxxxxxxxx.xx where xx are numbers, so xxxxxxxxx.xx could be 6482364283.73 (two numbers at the end) (actually this is the timestamp so I can keep extra info in the filename) That has the side effect that varnish does not cache them and I see them constantly being served by apache itself. Even though I can change the format from now on to create thumbs ending in .jpg, is there a way to change the vcl file of my varnish daemon to either cache everything under a directory (the thumbnails directory) or everything with two numbers at its extension? Let me know if I can provide any additional info ! Thanks!

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  • Possible attack on my SQL server?

    - by erizias
    Checking my SQL Server log I see several entries like this: Date: 08-11-2011 11:40:42 Source: Logon Message: Login failed for user 'sa'. Reason: Password did not match for the login provided. [CLIENT: 56.60.156.50] Date: 08-11-2011 11:40:42 Source: Logon Message: Error: 18456. Severity: 14. State: 8. Date: 08-11-2011 11:40:41 Source: Logon Message: Login failed for user 'sa'. Reason: Password did not match for the login provided. [CLIENT: 56.60.156.50] Date: 08-11-2011 11:40:41 Source: Logon Message: Error: 18456. Severity: 14. State: 8. And so on.. Is this a possible attack on my SQL Server from the chineese???! I looked up the IP adress, at ip-lookup.net which stated it was chineese. And what to do? - Block the IP adress in the firewall? - Delete the user sa? And how do I protect my web server the best?! :) Thanks in advance!

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  • Apache Virtualhost entry with Windows hostname

    - by gshauger
    I have a Windows Domain Controller and we use it for DNS for our internal network. I have an Ubuntu box with an IP address of 172.16.34.149. Within the Windows DNS I created the forward and reverse lookup entries for the name Endymion. Naturally when ever I FTP/SSH/HTTP/etc to the hostname Endymion it resolves correctly to my Ubuntu box. I wanted to do some web development on this box for an existing site. There were problems when I placed the website in a subfolder of /var/www/. Let's just say it was in folder /var/www/projectx/. The issue involved the incorrect resolution of non-relative urls. So I figure I could create a new DNS entry for the hostname projectx. Sure enough when I FTP/SSH/HTTP/etc to the hostname projectx it takes me to the same ubuntu box as the hostname Endymion...this is what I would expect. I now have two hostnames for the same box. I then create a Virtualhost entry in httpd.conf that looks like the following: <VirtualHost *:80> DocumentRoot /var/www/projectx ServerName projectx ServerAlias projectx </VirtualHost> Sure enough when I go to a browser and type in http://projectx/ it takes me to the correct subfolder. Everything works!!! Not so fast. I then go to http://endymion/ and instead of taking me to /var/www/ it takes me to /var/www/projectx/ Clearly I'm missing something. Help please! ;)

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  • cisco asa + action drop issue

    - by ghp
    Have created a tunnel between 10.x.y.z network and 122.a.b.c ..the tunnel is up and active, but when I try the packet tracer output ..I get the ACTION as drop. I have also enabled same-security-traffic permit intra-interface. Can someone help me what does this drop mean? Result: input-interface: inside input-status: up input-line-status: up output-interface: outside output-status: up output-line-status: up Action: drop Drop-reason: (acl-drop) Flow is denied by configured rule Packet Tracer output @Shane Madden: please find below the packet tracer output. CASA5K-A# CASA5K-A# config t CASA5K-A(config)# packet-tracer input inside tcp 10.x.y.112 0 122.a.b.c 0 Phase: 1 Type: ROUTE-LOOKUP Subtype: input Result: ALLOW Config: Additional Information: in 0.0.0.0 0.0.0.0 outside Phase: 2 Type: ACCESS-LIST Subtype: Result: DROP Config: Implicit Rule Additional Information: Result: input-interface: inside input-status: up input-line-status: up output-interface: outside output-status: up output-line-status: up Action: drop Drop-reason: (acl-drop) Flow is denied by configured rule CASA5K-A(config)# ======================================================================== The access-group are as follows : access-group acl-inbound in interface outside access-group acl-outbound in interface inside and the access-list's are access-list acl-inbound extended permit tcp any any gt 1023 access-list acl-outbound extended permit ip object-group net-Source object net-dest

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  • Anyone have a script to delete a specific local windows profile?

    - by Jordan Weinstein
    I'm looking for Powershell (preferred) script, or .CMD or .VBS, to delete a specific user profile on a workstation (WinXP) or terminal server (2000, '03 or '08). I know all about the delprof utility... That only allows you delete based on a period of inactivity. I want a script to: prompt admin for a username delete that username's profile and to delete the entire profile - registry hive too (not just the folder structure within Documents and Settings). The same way it would if you went to My Computer Properties Advanced tab User Profiles Settings and deleted profiles from there. Any ideas? All I can think of is doing an AD lookup to get the SID of the user specified, then using that to delete the correct registry hive too... something simpler would be nice though... Basically, my HelpDesk used to be local administrators on our Citrix servers and a common fix for various issues was for them to delete a user's profile on the citrix server(s) and have that user log back in - voila, whatever issue they had was resolved. Going forward, in new Citrix environment, they will no longer be local admins on those boxes, but still need to be able to delete profiles (deleting the entire profile: folder and reg hive is key). thanks.

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