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• Can I make TCP/IP session to run less than 60 seconds?

  - by par

  Our server is overloaded with TCP/IP sessions, we have 1200 - 1500 of them. Most of them are hanging in TIME_OUT state. It turns out that a connection in TIME_OUT state occupies a socket until 60 second time-out is elapsed. The problem is that the server gets unresponsive and many clients are not getting served. I have made a simple test: download an XML file from the server with Internet Explorer 8.0 The download finishes in a fraction of second. But then I see that the TCP/IP connection is hanging in TIME_OUT state for 60 seconds. Is there any way to get rid of TIME_OUT waiting or make it less to free the socket for new connections? I understand why TCP/IP connection enters TIME_OUT state, but I don't understand why Internet Explorer does not close the connection after the XML file download is over. The details. Our server runs web service written in Perl (mod-perl). The service provides weather data to clients. Client is a Flash appication (actually Flash ActiveX control embedded in Windows application). OS: Ubuntu Apache "Keep Alive" option is set to 0

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• What is the meaning of these BIND log messages?

  - by javano

  Please clarify for me the meaning of the following BIND messages in syslog, these are from a DNS resolver. Whilst I think I understand them, I don't know what all four mean, so I think it's best if someone will clarify for me: 1. Oct 14 18:36:34 resolver1 named[14958]: lame server resolving 'arrivatn.co.uk' (in 'arrivatn.co.uk'?): 212.103.224.56#53 2. Oct 14 18:36:36 resolver1 named[14958]: unexpected RCODE (SERVFAIL) resolving '148.128.183.212.in-addr.arpa/PTR/IN': 212.183.136.42#53 4. Oct 14 18:38:49 resolver1 named[14958]: unexpected RCODE (REFUSED) resolving 'internal-server.ournetwork.com/AAAA/IN': auth.dns.server.ip#53 3. Oct 14 18:39:05 resolver1 named[14958]: client 89.187.127.110#42034: query (cache) 'image.sinajs.cn/A/IN' denied Thank you.

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• How to add a web folder via command line (Windows)

  - by Ryan

  I am trying to add a web folder via command line in windows. At first I though I should use the "net use" command, but when I tried I kept getting System error 67: C:net use * http://dev.subdomain.domain.tdl/dav/ the user name for 'dev.subdomain.domain.tdl': correctusername the password for dev.subdomain.domain.tdl: System error 67 has occurred. The network name cannot be found. The url I used works in a browser. It's an Apache dav on basic auth LDAP authentication method being used. Here's the thing... I CAN create a web folder when I use the "Add a network place" wizard. When I do net use, I don't see it listed in the prompt that follows. What utility do I need to use to mount a web folder in command line?

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• Using Default Document with Forms Authentication

  - by John Rabotnik

  I have a site hosted on IIS7 with a default document specified as default.aspx. This works fine but my app uses Forms Authentication and I want to disable Anonymous Authentication completely. When I do disable anonymous authentication for everything except the login page, everything works fine but the default document setting stops working. With Anonymous authentication switched on if I visit http://mysite I get passed to http://mysite/default.aspx (which then redirects to the login page if the user hasn't already logged in) If I disable anonymous authentication (leaving only forms based auth enabled) and I visit http://mysite I get a permission denied page from IIS. Yet, if I visit http://mysite/default.aspx directly then the site works fine. I just want to disable anonymous authentication and have http://mysite go to http://mysite/default.aspx. Any ideas would be greatly appreciated.

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• hosts.deny not working

  - by Captain Planet

  Currently I am watching the live auth.log and someone is continuously trying the brute force attack for 10 hours. Its my local server so no need to worry but I want to test. I have installed denyhosts. There is already an entry for that IP address in hosts.deny. But still he is trying the attacks from same IP. System is not blocking that. Firstly I don't know how did that IP address get entered in that file. I didn't enter it, is there any other system script which can do that. hosts.deny is sshd: 120.195.108.22 sshd: 95.130.12.64 hosts.allow ALL:ALL sshd: ALL Is there any iptable setting that can override the host.deny file

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• How to configure JAAS on JBoss?

  - by AntonioP

  Hey Im having a problem with "Failed to load users/passwords/role files: java.io.IOException: No properties file: users.properties or defaults: defaultUsers.properties found" error from jboss. No matter what I change in conf/login-config.xml always that same error. Turning on TRACE for org.jboss.security shows that it does Security domain: myapp followed by findResource: null and the above error. Ive tryed adding a users.properties to my .war WEB-INF/classes/users.properties to no avail. Why is jBoss doing like this? What is this JAAS and why does it need it? What does it require, where to put what files, if its possible Ill remove all of this org.jboss.security.auth.spi.UsersRolesLoginModule completly, just let me use my app. Thanks

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• Deny users in a certain group access to dovecot

  - by celil

  I installed the dovecot-imapd package in Ubuntu, and my setup is as follows: $ sudo dovecot -n # 1.2.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-27-generic-pae i686 Ubuntu 10.04.1 LTS log_timestamp: %Y-%m-%d %H:%M:%S protocols: imaps login_dir: /var/run/dovecot/login login_executable: /usr/lib/dovecot/imap-login mail_privileged_group: mail mail_location: maildir:~/Maildir mbox_write_locks: fcntl dotlock auth default: passdb: driver: pam userdb: driver: passwd For security reasons I would like to deny all users that are in the admin group ability to do imap login via dovecot. This is done in order to prevent a brute force attacker from discovering the admin passwords, and obtaining administrator privileges on the system. How can this be achieved? Presumably, I will have to modify some settings in /etc/dovecot/dovecot.conf, but I am hesitant to change the default settings lest I create other security vulnerabilities.

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• Added autossh in rc.local, but the dynamic port forwarding won't work

  - by rankjie

  I am using Rasbian on my newly arrived Rasp.Pi, and decided to make it my own proxy server. Now I need to set up a ssh tunnel on the Pi to my Linode server, and make it auto start with the system. What did I do: Add this line to /etc/rc.local autossh -f theRemoteServer -N -D 5555 -L 1234:localhost:22 After I reboot, I found out that I can't use the localhost:5555 as a socks proxy. So I type the command ps -A | grep ssh then I can see the autossh and ssh all running: pi@raspberrypi ~ $ ps -A | grep ssh 2018 ? 00:00:00 sshd 2116 ? 00:00:00 autossh 2119 ? 00:00:00 sshd 2195 ? 00:00:00 sshd 3173 ? 00:00:00 ssh (I've installed autossh, and the command works if I type it manually.) (I use the passwordless key auth, so I don't have to enter password.) Much appreciated and sorry for my poor English.

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• Where can I find logs for SFTP?

  - by Jake

  I'm trying to set up sftp-server but the client is getting an error, Connection closed by server with exitcode 1 /var/log/auth.log (below) doesn't help much, how can I find out what the error is? I'm running Ubuntu 10.04.1 LTS sshd[27236]: Accepted password for theuser from (my ip) port 13547 ssh2 sshd[27236]: pam_unix(sshd:session): session opened for user theuser by (uid=0) sshd[27300]: subsystem request for sftp sshd[27236]: pam_unix(sshd:session): session closed for user theuser Update: I've been prodding this for a while now, I've got the sftp command on another server giving me a more useful error. Request for subsystem 'sftp' failed on channel 0 Couldn't read packet: Connection reset by peer Everything I've found on the net suggests this id a problem with sftp-server but when I remove the chroot from sshd config I can access the system. I assume this means sftp-server is accessible and set up correctly.

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• Can't login to SQL Server after moving machine to different office/domain

  - by Dan

  Our company has just been bought and the over the weekend I have brought up the last few machines to plug into their network (they are under a different Windows Domain). The last machine is our Vault system and the SQL Server was using Windows Authentication. I have plugged it into their network and its working fine, but i cannot connect to SQL Server with Management Studio and, I fear, no backup jobs will also be working. When I try to login under Windows Auth, it has the user name of "NEWDOMAIN\Administrator" (greyed out) and then presents a "login failed" message with error code "18456". Can anyone help me with this, or will I just have to reinstall SQL Server, Vault and restore the backup I took before the move?

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• Testing php mail() in localhost problem

  - by Samir Ghobril

  Hey guys, recently I just installed msmtp in linux and I even send a mail from the terminal and it worked: echo -e "Subject: Test Mail\r\n\r\nThis is a test mail" |msmtp --debug --from=default -t [email protected] But in php, after editing the php.ini file to have this: sendmail_path = '/usr/bin/msmtp -t' and using this piece of code: <?php if ( mail ( '[email protected]', 'Test mail from localhost', 'Working Fine.' ) ){ echo 'Mail sent'; } else{ echo 'Error. Please check error log.'; } ?> I get the Mail sent message but don't receive a message in my inbox. Not even in the spam folder. Anything wrong I'm doing? msmtp configuration file: defaults tls on tls_starttls on tls_trust_file /etc/ssl/certs/ca-certificates.crt account default host smtp.gmail.com port 587 auth on user [email protected] password password from [email protected] logfile /var/log/msmtp.log

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• Intermittent extrememly long response times when downloading documents

  - by pap

  I have a Java web application running om Tomcat 7 with an Apache httpd 2.2 fronting with mod_jk/AJP. One part of the application is serving files (up to 4mb size). Now, normally this all runs very smooth with stable, low response-times. However, in rare instances (<0.1% of downloads), the downloadtime will go beyond 1 minute. After activating the ThreadStuckValve in Tomcat, I can see that the long responses seem to be stuck at org.apache.tomcat.jni.Socket.sendbb(Native method) i.e network I/O. At most, these long-running downloads take 5 minutes, which I strongly suspect is because of the default 300 second timout in Apache 2.2 (http://httpd.apache.org/docs/2.2/mod/core.html, "TimeOut directive"). To me, this looks like network problems. The Apache timeout (if that is what is kicking in at the 5 minute mark) indicates that ACK packets are not being transmitted correctly. My questions are what could be causing this? Closed browser at receiving end but socket not signaled as closed properly? Packet loss or some other network failure in transit? Where would I start troubleshooting this? We're running Tomcat and Apache on Windows server 2008-R2 in a vmware virtualized server.

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• Why does iChat Server keep connecting to proxy.eu.jabber.org?

  - by Tom Hamming

  I have OS X Server 10.6.5 running on a new Mac Mini (server model), serving several functions among which is iChat Server (iChat and Pidgin on Windows as clients). In the iChat log in Server Admin, I kept seeing entries about connecting to proxy.eu.jabber.org. It's for our office network and I wasn't excited about external access to it, so I disabled server-to-server XMPP federation and now the connections just time out. But why is it doing that in the first place? Sample log entry: (datetime) (servername)jabberd/resolver[portnum]: [xmpp-server._tcp.proxy.eu.jabber.org resolved to 208.68.163.220:5269 (300 seconds to live) then: sending dialback auth request for route '(full server hostname)/proxy.eu.jabber.org' A couple minutes later, it comes back with: dialback for outgoing route '(full server hostname)/proxy.eu.jabber.org' timed out

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• nginx reverse proxy to apache mod_wsgi doesn't work

  - by user11243

  I'm trying to run a django site with apache mod-wsgi with nginx as the front-end to reverse proxy into apache. In my Apache ports.conf file: NameVirtualHost 192.168.0.1:7000 Listen 192.168.0.1:7000 <VirtualHost 192.168.0.1:7000> DocumentRoot /var/apps/example/ ServerName example.com WSGIDaemonProcess example WSGIProcessGroup example Alias /m/ /var/apps/example/forum/skins/ Alias /upfiles/ /var/apps/example/forum/upfiles/ <Directory /var/apps/example/forum/skins> Order deny,allow Allow from all </Directory> WSGIScriptAlias / /var/apps/example/django.wsgi </VirtualHost> In my nginx config: server { listen 80; server_name example.com; location / { include /usr/local/nginx/conf/proxy.conf; proxy_pass http://192.168.0.1:7000; proxy_redirect default; root /var/apps/example/forum/skins/; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } } After restarting both apache and nginx, nothing works, example.com simply hangs or serves index.html in my /var/www/ folder. I'd appreciate any advice to point me in the right direction. I've tried several tutorials online to no avail.

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• Source of Unexplained Requests in Server Logs

  - by Synetech inc.

  Hi, I am baffled by some entries in my server logs, specifically the web-server logs. Other than normal, expected traffic, I have noticed three types of request errors (eg 404, etc.): Broken links, ie links from old, external pages that point to pages that are no longer here Sequences of probes, ie some jerk trying to hack in by scanning my server for a series of exploitable admin type pages and such What appear to be completely random requests for things that have never existed on the server or even have anything to do with the server, and appear by themselves (ie not a series of requests like the probes) Could it somehow be a mistyped URL or IP? That’s about the only thing that I can think of, but still, how could I get a request on say, foobar.dyndns.org (12.34.56.78) for something like www.wantsfly.com/prx2.php or /MNG/LIVE or http://ant.dsabuse.com/abc.php?auth=45V456b09m&strPassword=X%5BMTR__CBZ%40VA&nLoginId=43. (Those are a few actual requests from my logs.) Can someone please explain scenario three to me? Thanks.

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• Unable to get ejabberd prebind to work

  - by cdecker

  I'm trying to get the prebind of BOSH sessions to work. I want to be able to authenticate a user in my CMS and then log him in when he accesses the chat, for this I found https://github.com/smokeclouds/http_prebind, it all works find and I was able to compile it with the following steps: rake configure sed -i 's/AUTH_USER/a_user/g' src/http_prebind.erl sed -i 's/AUTH_PASSWORD/a_password/g' src/http_prebind.erl sed -i 's/EJABBERD_DOMAIN/jabber.my.tld/g' src/http_prebind.erl rake build rake install And then adding the http request bindings to the configuration: {5280, ejabberd_http, [ {request_handlers, [ {["http-prebind"], http_prebind} ]}, %%captcha, http_bind, http_poll, http_prebind, web_admin ]} ]}. As far as I understand it I should now be able to simply request a new session like this: curl -u a_user:a_password http://jabber.my.tld:5280/http-prebind/some_user But no matter what I always get Unauthorized as response. Any idea about this one? PS: I also tried Mod-Http-Pre-Bind, but as it does not require a password I would prefer to use http_prebind. PPS: Does the user with username AUTH_USER and password AUTH_PASSWORD actually have to exist? I'm currently using an admin account.

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• openldap proxied authorization

  - by bemace

  I'm having some trouble doing updates with proxied authorization (searches seem to work fine). I'm using UnboundID's LDAP SDK to connect to OpenLDAP, and sending a ProxiedAuthorizationV2RequestControl for dn: uid=me,dc=People,dc=example,dc=com with the update. I've tested and verified that the target user has permission to perform the operation, but I get insufficient access rights when I try to do it via proxy auth. I've configured olcAuthzPolicy=both in cn=config and authzTo={0}ldap:///dc=people,dc=example,dc=com??subordinate?(objectClass=inetOrgPerson) on the original user. The authzTo seems to be working; when I change it I get not authorized to assume identity when I try the update (also for searches). Can anyone suggest what else I should look at or how I could get more detailed errors from OpenLDAP? Anything else I can test to narrow down the source of the problem?

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• How to establish SIP connection, when SIP-proxy is required?

  - by LA_

  I have Asterisk/1.8.13.1 Asterisk GUI-version : SVN--r Yes, quite old one, but I can not update it since this is installed on my Synology NAS. NAS is connected to internet thru router Asus RT-N16. I should use the following data to connect to the server: Auth name – 7499952XXXX User name/User ID/Display Name – nickname Authorization user name - [email protected] Domain - sip.beeline.ru SIP proxy server - msk.sip.beeline.ru I've also found the following string: [email protected]:password:[email protected]@msk.sip.beeline.ru:5060/7499952XXXX I've tested the parameters on my PC thru X-Lite and it works well (so, assume there is no any problem with the router, no need to do anything with router's NAS settings). But since I am quite new to Asterisk, I can not understand where to input all these data. Asterisk GUI doesn't have fields for proxy: Can somebody please help me with step-by-step instruction? Thank you in advance!

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• Why does iChat Server keep connecting to proxy.eu.jabber.org?

  - by Tom Hamming

  I have OS X Server 10.6.5 running on a new Mac Mini (server model), serving several functions among which is iChat Server (iChat and Pidgin on Windows as clients). In the iChat log in Server Admin, I kept seeing entries about connecting to proxy.eu.jabber.org. It's for our office network and I wasn't excited about external access to it, so I disabled server-to-server XMPP federation and now the connections just time out. But why is it doing that in the first place? Sample log entry: (datetime) (servername)jabberd/resolver[portnum]: [xmpp-server._tcp.proxy.eu.jabber.org resolved to 208.68.163.220:5269 (300 seconds to live) then: sending dialback auth request for route '(full server hostname)/proxy.eu.jabber.org' A couple minutes later, it comes back with: dialback for outgoing route '(full server hostname)/proxy.eu.jabber.org' timed out

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• Windows 7 keep internet connection after IPSec established

  - by mmc18

  How I can keep internet connection after establishing IpSec connection to server? I have followed to following link to establihed IpSec server http://rootmanager.com/ubuntu-ipsec-l2tp-windows-domain-auth/setting-up-openswan-xl2tpd-with-native-windows-clients.html then following the below one to connect this server from Windows 7 machine. http://confoundedtech.blogspot.com/2012/07/windows-l2tp-ipsec-vpn-connection-to.html I am able to connect and properly sending data. But after establihing IpSec conenction, my internet conenction is dropped. How I can keep both connection alive?

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• Bacula virtual backup job doesn't run, no output?

  - by Zoredache

  I am trying to get Virtual Backups working, but when I try to run a virtual backup job, it appears to get created, but then never seems to actually run. I have a full, and a couple incremental backups. status director JobId Level Files Bytes Status Finished Name ==================================================================== 1283 Full 10,565 1.963 G OK 21-Dec-12 09:47 nms-Job 1284 Incr 314 129.6 M OK 21-Dec-12 09:49 nms-Job 1285 Incr 230 147.2 M OK 21-Dec-12 09:51 nms-Job 1288 Incr 525 138.8 M OK 21-Dec-12 11:25 nms-Job I attempt to start a job from bconsole like this. *run job=nms-Job level=VirtualFull Using Catalog "MySQL" Run Backup job JobName: nms-Job Level: VirtualFull Client: nms-FileDaemon FileSet: nms-FileSet Pool: nms-pool (From Job resource) Storage: File_d1 (From Pool resource) When: 2012-12-21 13:07:54 Priority: 10 OK to run? (yes/mod/no): Job queued. JobId=1291 Then my new job, just sits there, doing nothing. The JobStatus shows that the job was created, but it appears to never run? All the full, and incremental backups are terminating normally. *llist jobid=1291 JobId: 1,291 Job: nms-Job.2012-12-21_13.07.56_07 Name: nms-Job PurgedFiles: 0 Type: B Level: F ClientId: 4 Name: nms-FileDaemon JobStatus: C SchedTime: 2012-12-21 13:07:54 StartTime: 2012-12-21 13:07:56 EndTime: 0000-00-00 00:00:00 RealEndTime: 0000-00-00 00:00:00 JobTDate: 1,356,124,076 VolSessionId: 0 VolSessionTime: 0 JobFiles: 0 JobErrors: 0 JobMissingFiles: 0 PoolId: 19 PooLname: nms-pool PriorJobId: 0 FileSetId: 11 FileSet: nms-FileSet I am getting very frustrated, that this isn't working, mostly because it isn't giving me any error logs, or output at all. I submit the job, and as far as I can tell nothing happens. Is there some status, or debugging level that I can set to get a useful information about why this isn't working? What can I do to make this work? I was originally running Bacula 5.0.2 on Debian Squeeze, out of frustration, I upgraded to the 5.2.6 in the backports repository, hoping that a new version might give me better results.

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• Relaying to tech "support" that computer is actually broken.

  - by Sion

  First some background: I have a Dell Inspiron 15R M050, it is still under the Dell limited warranty and the Best Buy Extended warranty. I am currently dual booting Debian Squeeze and Windows 7, the only reason I go into Windows is to play video games specifically steam games. Issue: When I play my games in Windows I am capable of playing for anywhere from 5 minutes to 2 hours before I suffer a hard-lock. I cannot alt-tab, ctrl-alt-delete, ctrl-shift-escape do anything for 2-3 minutes. After this hard-lock period everything runs fine, I can continue the game for probably another hour at least before I suffer another lock. Games: Borderlands, Splinter Cell: Chaos Theory, Starcraft 2, Garrys Mod What I have tried: Running the diagnostic suite in the dell bios, restoring the OEM Windows recovery partition on the HD, fresh installing Windows 7 Professional, updating BIOS, Calling tech support and having them run a software Hardware Diagnostics suite. The question: I think from the research that I have performed that it might be a lack of thermal paste on the CPU, would I be able to go to Best Buy and have them do a hardware diagnostic from the hardware level then have them be able to tell Dell that there is a hardware issue? Or would there be a different problem?

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• Proper web server setup

  - by DMin

  I just got myself a slicehost basic slice to play around with so I can learn how to setup web-servers. I have Ubuntu 10.04.2 installed on the server. I was able to successfully get the server up and running from scratch, these were the things I did - following this tutorial. I know this is probably just a starters tutorial, so, I was wondering if you guys can tell me what you like to do while setting up production servers. These are the steps that were followed : Update and Upgrade Ubuntu sudo apt-get install apache2 php5-mysql libapache2-mod-php5 mysql-server Backup a copy of and edit apache2.conf Set : 'ServerTokens Full' to 'ServerTokens Prod''ServerSignature On' to 'ServerSignature Off' Backup php.ini and then Change “expose_php = On” to “expose_php = Off” Restart Apache Install Shorewall firewall Configure Shorewall to only accept HTTP and SSH connections(in the rules file) Enable shorewall on startup Add the website to the server : sudo usermod -g www-data root sudo chown -R www-data:www-data /var/www sudo chmod -R 775 /var/www I want make this CommunityWiki but can't seem to find the option to do it. Please feel free to add any feedback on the processes and things I am doing right/wrong. Much appriciated, thanks! :)

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• How to failover to local account on a cisco switch/router if radius server fails?

  - by 3d1l

  I have the following configuration on a switch that I testing for RADIUS authentication: aaa new-model aaa authenticaton login default group radius local aaa authentication enable default group radius enable aaa authorization exec default group radius local enable secret 5 XXXXXXXXX ! username admin secret 5 XXXXXXXXX ! ip radius source-interface FastEthernet0/1 radius-server host XXX.XXX.XXX.XXX auth-port 1812 acct-port 1813 key XXXXXXXXX radius-server retransmit 3 ! line con 0 line vty 5 15 Radius authentication is working just fine but if the server is not available I can not log into the router with the ADMIN account. What's wrong there? Thanks!

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• Apache2 doesn't serve PHP-scripts correctly

  - by cmbrnt

  I've run into a problem with my Apache 2.2.16 configuration, running on Debian Squeeze. The problem is that it stopped serving PHP5-scripts completely. When I try to access the sites with Google Chrome, it instead downloads a file called "download", which contains the contents of the script. This is of course not a good thing. It does serve common html-files perfectly... I've been at this for quite a while now, and after all the googling and troubleshooting, I thought it would be a good time to ask you guys. Here's what I've got: The php5 and libapache2-mod-php5 packages are installed /etc/apache2/mods-available contains both php5.load and php5.conf, and these are symlinked from the mods-enabled directory The /etc/php5/ directory is left untouched since the installation. Here's the contents of /etc/apache2/mods-available/php.load: LoadModule php5_module /usr/lib/apache2/modules/libphp5.so And /etc/apache2/mods-available/php.conf: <IfModule mod_php5.c> <FilesMatch "\.ph(p3?|tml)$"> SetHandler application/x-httpd-php </FilesMatch> <FilesMatch "\.phps$"> SetHandler application/x-httpd-php-source </FilesMatch> <IfModule mod_userdir.c> <Directory /home/*/public_html> php_admin_value engine Off </Directory> </IfModule> </IfModule> What am I missing? This is a server with modified virtual hosts and the like, so I might have changed some settings which causes this problem, but simply purging and reinstalling is not an option so far, since the configuration is quite extensive. Any help would be great. Thanks.

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