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• Forwarding ports with ssh on Linux

  - by Patrick Klingemann

  I have a database server, let's call it: dbserver I have a web server with access to my dbserver, let's call it: webserver I have a development machine that I'd like to use to access a database on dbserver, let's call it: dev dbserver has a firewall rule set to allow TCP requests from webserver to dbserver:1433 I'd like to set up a tunnel from dev:1433 to dbserver:1433, so all requests to 1433 on dev are passed along to dbserver:1433 My sshd_config on webserver has the following rules set: AllowTcpForwarding yes GatewayPorts yes This is what I've tried: ssh -v -L localhost:1433:dbserver:1433 webserver In another terminal: telnet localhost 1433 Results in: Trying ::1... Connected to localhost. Escape character is '^]'. Connection closed by foreign host. Any idea what I'm doing wrong here? Thanks in advance!

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• I can't work locally unless connected to the internet - how to fix?

  - by Rodney

  Hi, In Firefox, when I am disconnected from the net, I want to work locally on my local IIS server (Win XP, Firefox 3.5.10). I do NOT have Work Offline checked but FF says that it cannot find my site (ie. the message from FF if you try to access an online site offline) This applies to any localhost URL. I tried 127.0.0.1 and checked my Host file - that does not work either. If I check Work Offline then it shows the Firefox message that it cannot be reached because I have Work Offline checked. Unchecking it does not help. Then - I load up Safari, copy and paste the URL into that browser and it connects to my development localhost site. It is not just browser caching as I can log in etc. So Firefox will not let me develop locally unless I am connected to the internet, which is a problem. Suggestions please?

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• Outgoing mail from linux not being delivered

  - by Jason

  I can't seem to send mail through my php scripts or through the linux console on my Centos 5.5 LAMP server, when the email is addressed to go to a domain that is hosted by my box. I think it is something to do with the email routing internally, or the DNS servers that the box uses not reporting the correct MX records. Basically my box doesn't host any mail, it's all hosted on google apps. My name servers are hosted by a 3rd party provider and I am using webmin. Webmin doesn't recognise the settings on the 3rd party provider. I'm unsure how to fix this. Previously when I had this problem on a cpanel server, I would edit the remotedomains and localdomains files, moving domains from one file to another and it would fix the problem. What information do I need to provide for anyone to work out what the issue is? Thanks

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• Hyper-v error starting vm after reboot

  - by mamu

  Hi rebooted hyper-v host running server 2008 r2. After reboot one of my vm is throwing following error. 'The version does not support this version of file format' Out of my all vms this was only set to save state when shutdown. I tried deleting state and start still same error. Tried inspect disk as well edit disk both throw same error when try to open this. What could it be? any way to resolve it?

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• approx via inetd is not open to connection for others machines

  - by Cédric Girard

  I have an approx server to speed up Debian apt updates, on my Ubuntu 11.04 desktop PC, it had ran fine in the past, but today le 9999 port is open from localhost, but not for others PC. I have not modified inetd configuration at all. What can I check and try? inetd.conf 9999 stream tcp nowait approx /usr/sbin/approx /usr/sbin/approx approx.com # Here are some examples of remote repository mappings. # See http://www.debian.org/mirror/list for mirror sites. debian http://ftp2.fr.debian.org/debian security http://security.debian.org/debian-security volatile http://volatile.debian.org/debian-volatile # The following are the default parameter values, so there is # no need to uncomment them unless you want a different value. # See approx.conf(5) for details. $cache /espace/Dossiers/approx $max_rate unlimited $max_redirects 5 $user approx $group approx $syslog daemon $pdiffs true $offline false $max_wait 10 $verbose false $debug false I tried to allow others PC to connect with a "ALL: ALL" in hosts.allow. ufw is disabled, iptables-save is empty.

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• SSH tunnel & Rsync thru two proxy/firewalls

  - by cajwine

  Screnario: [internal_server_1]AA------AB[firewall_1]AC----+ 10.2.0.3-^ ^-10.2.0.2 | internet 10.3.0.3-v v-10.3.0.2 | [internal_server_2]BA------BB[firewall_2]BC----+ Ports AC,BC has valid internet addresses. All systems run linux and have root acces to all. Need securely rsync internal_server_1:/some/path into internal_server_2:/another/path My idea is make ssh secure tunnel between two firewalls, e.g. from firewall_1 firewall1# ssh -N -p 22 -c 3des user2@firewall_2.example.com -L xxx/10.3.0.3/xxxx and after will run rsync from internal_server_1 somewhat like: intenal1# rsync -az /some/path [email protected]:/another/path I don't know how to make a correct ssh tunnel for rsync (what ports need tunnel) and to where i will make the rsync? (remote comp address in case of ssh tunnel) Any idea or pointer to helpfull internet resource for this case? thanx.

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• Laptop stopped recognizing USB hard drive

  - by vahokif

  Hi, My Packard Bell EasyNote TX86 laptop stopped recognizing my 1 TB Toshiba Store Art hard drive. It worked fine until now, and it still works on other computers. Other USB devices (including storage) work, and I've tried plugging it in every port, to no avail. When I plug it in it spins up, but Windows doesn't react at all (it's not in disk management), Linux doesn't write anything in dmesg and I can't see it in BIOS setup. I didn't use it at all today, apart from plugging it into a freshly-installed Windows 7 machine once (where it worked). What can I do? Which device is to blame here? EDIT: One more thing. I unplugged the drive while the laptop was hibernated. Google says this might be the problem and it might have something to do with resetting the USB Host Controller.

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• Help with Apache rewriteengine rules

  - by Vinay

  Hello - I am trying to write a simple rewrite rule using the rewriteengine in apache. I want to redirect all traffic destined to a website unless the traffic originates from a specific IP address and the URI contains two specific strings. RewriteEngine On RewriteLog /var/log/apache2/rewrite_kudithipudi.log RewriteLogLevel 1 RewriteCond %{REMOTE_ADDR} ^199\.27\.130\.105 RewriteCond %{REQUEST_URI} !/StringOne [NC, OR] RewriteCond %{REQUEST_URI} !/StringTwo [NC] RewriteRule ^/(.*) http://www.google.com [R=302,L] I put these statements in my virtual host configuration. But the rewriteengine seems to be redirect all requests, whether they match the condition or not. Am I missing something? Thank you. Vinay.

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• Not all events appear in Nagios history (archive)

  - by Lars

  in the "Host & Service history" of my check_mk interface I can see various events, but a lot of events are missing. On the default interface at "View Alert History For This Service" or in the logfiles /var/log/nagios/archives/*.log the same issue: I can see many events of the last days, but not all of them. In the /etc/nagios/nagios.cfg the options log_event_handlers, log_initial_status and log_passive_checks are set to 0, the other log_... options are set to 1. I don't think that any of these options causing the problem that not all events are logged. What could cause this problem?

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• Application Launcher for Hyper-V Server

  - by peterchen

  We are currently in the process of setting up a HyperV R2 Server machine. Though there's not a lot we need to do wihtin the HyperV Server itself, the command line is sure minimalistic. There are a few administrative / Hardware Monitoring tools that we want to run on he machine itself (accessed through remote desktop). I am looking for a simple program/application launcher where we can hook up these maintenance tools (and one to open a new cmd.exe window in case I habitually close the one I'm working in!) However, all tools I tried by now more or less assume explorer is present, and fail in different ways. Before I go and write a simple one myself, any recommendations?

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• how can I git-revise configs in my /etc/ dir? (sudo has different keys..)

  - by Dean Rather

  I'd like to keep some of the folders in my /etc/ dir git-revised, cause I'm quite new to server administration and am constantly messing around in my /etc/nginx/ and /etc/bind/ directories. I've heard of people git-revising their either /etc/ directories, but that seems a bit like overkill, as at this point I'm only messing in those 2 subdirectories. The problem I'm having is that if I sudo my git operations, I don't have the right pubkeys to push to my remote repo (bitbucket). But if I don't sudo, I need to mess around with all the permissions (again, not very pro at this). Does anyone know best practices for managing their configs? or how I should solve this problem? Thanks, Dean. PS. It's Ubuntu 12.04, Git, nginx, bind9, amazon aws, bitbucket...

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• How to manage preventive maintenance planning for external IT support?

  - by code-gijoe

  I am a bit puzzled by the way to handle server upgrade planning for software we maintain on remote sites. This is my case: I work for a software company that has many external clients. We are trying to be more Agile in our development so we plan to release small improvements every quarter and we wish to keep our clients informed of maintenance schedules. Instead of having angry clients that believe there ROI of our support plan is low, we want to be more proactive. Lets say we have 100 machines to take care of, is there some tool to assist me in planing the maintenance with clients? Right now I get a call from a client that is unhappy requesting we upgrade them, that is when we go into panic mode and start making calls. That is when I need to check my calendar, coordinate with the other guys, call a few times, change the date again and again until everyone is happy. Can this be done better?

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• Online meetings: any recommendations?

  - by T Pops

  There's a few times at work when I have to host a meeting and physical presence is impossible. For these situations I've been using Acrobat ConnectNow. Specifically because it's free. Are there any other recommendations out there? Free or not. What are the pros and cons? I'll start a compiled list of apps from the answers here right now. Anyone with Wiki editing privileges is welcome to edit this: Paid GoTo Meeting Webex TeamViewer (free for non-commercial) Groove (bundled with MS Office) Free Yugma Yuuguu SharedView TinyChat Other Options CoPilot

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• how to pass domain name to backend with pound

  - by FurtiveFelon

  I am using pound as a way to decode SSL for the backend, but the bulk of the work is done on varnish (including virtualhost stuff). As a result, I need pound to just forward all other traffic to varnish verbatim, but it doesn't seem to do that. I am using the default configuration: ListenHTTP Address 1.2.3.4 Port 8080 ## allow PUT and DELETE also (by default only GET, POST and HEAD)?: xHTTP 0 Service BackEnd Address 127.0.0.1 Port 80 End End End So whenever I hit example.com:8080, it will always redirect to the default backend for varnish, which i assume was because the domain (host) header isn't send along. Anyone know what could be wrong? Thanks a lot! Jason

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• Centralize proxy settings for all the application on my workstation

  - by Leonardo

  As a consultant, I used to work at different clients premises. It happens frequently that most of them has specific proxy settings, but not all the application I have installed on my laptop get settings from system preferences, for allowing me to change settings in one place. Some of them bypass system preferences completely, proposing their own mask for entering specific data such as username, host and password. I am looking for a convenient and not much intrusive way to share a common access point on which I could enter data, and maybe persist them. An 'automatic' switching would be ideal, for example based on some network identification, but there's no problem for me to enter data manually. I am not an IT expert, but to explain myself clearly, I am looking for a solution like .pac file is for browsers. Relevant OS I am using are MacOSX and Linux (Ubuntu).

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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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• Postfix how to triggering my script when outgoing email status is sent?

  - by Laszlo Malina

  I want to run a program when postfix has successfully sent out a mail (local or remote). I would like to pass the headers to program and if possible also the destination ip or address (exclude spam filter delivery). I just have an idea: Delivery Status Notification processing via uniqe transport program, but I'd prefer the above. My goal is to be recorded lifetime (events) of email: it came, it went out (from, to, subject, datetime, message id, message status: bounce, sent). I would only need the state of the outgoing mail, because incoming and bounce program is working. It is possible to trigger a program (similar to a transport pipe/spawn) or DSN "cheat" stay? Thanks in advance for any reply!

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• Wordpress Blank White Page for Login

  - by HollerTrain

  When I go to the /wp-login.php portion of my Wordpress site I get a blank white screen. In fact, throughout the entire domain I get blank white screen. Also, I can't even connect to the server via FTP (tried with other FTP accts to make sure not FTP client). Is this an issue with the host or my WP? Not even sure how to fix it if it's on my end cuz I can't even login to FTP or to the Admin Dashboard! Any help = appreciated.

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• Hosting a site on amazon ec2

  - by Khalid Mushtaq

  I have recently bought an amazon ec2 instance. Now I want to host a website. I have googled and found some useful info but there is some confusion in my mind. Suppose domain name is "http://www.example.com" That's what I have done so far. I have configured my domain locally on amazon ec2 instance and it's working fine when I open that url in amazon ec2 instance's browser. I have used http://www.example.com in /etc/hosts file point it to 127.0.0.1 to open locally on instance. I have got one elastic ip address and associated it with the instance. I have changed http://www.example.com A's record with the elastic IP that I have got in above step. Now what should I do? When some user will open my website anywhere in the world, will it get pointed to my instanace's ip address? Have I done proper configurations for website on instance?

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• Drupal + Lighttpd: enabling clean urls (rewriting)

  - by Patrick

  I'm emulating Ubuntu on my mac, and I use it as a server. I've installed lighttpd + Drupal and the following configuration section requires a domain name in order to make clean urls to work. Since I'm using a local server I don't have a domain name and I was wondering how to make it work given the fact the ip of the local machine is usually changing. thanks $HTTP["host"] =~ "(^|\.)mywebsite\.com" { server.document-root = "/var/www/sites/mywebsite" server.errorlog = "/var/log/lighttpd/mywebsite/error.log" server.name = "mywebsite.com" accesslog.filename = "/var/log/lighttpd/mywebsite/access.log" include_shell "./drupal-lua-conf.sh mywebsite.com" url.access-deny += ( "~", ".inc", ".engine", ".install", ".info", ".module", ".sh", "sql", ".theme", ".tpl.php", ".xtmpl", "Entries", "Repository", "Root" ) # "Fix" for Drupal SA-2006-006, requires lighttpd 1.4.13 or above # Only serve .php files of the drupal base directory $HTTP["url"] =~ "^/.*/.*\.php$" { fastcgi.server = () url.access-deny = ("") } magnet.attract-physical-path-to = ("/etc/lighttpd/drupal-lua-scripts/p-.lua") }

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• xampp admin page access forbidden

  - by Vihaan Verma

  I m new to apache world ! I read some docs online to setup virtual host . Which works fine ! Here are the content of httpd-vhosts.conf file <Directory C:/vhosts> Order Deny,Allow Allow from all </Directory> NameVirtualHost *:80 <VirtualHost *:80> DocumentRoot "C:/htdocs" ServerName localhost </VirtualHost> <VirtualHost *:80> DocumentRoot "C:/vhosts/phpdw" ServerName phpdw </VirtualHost> But now when I access the xampp control panel and try accessing the apache admin page I get access defined eror (403) . My guess is that there needs to be some more configuration in this file to allow access to localhost. I could not find anything relevant . Thanks

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• Setting up Shibboleth to secure part of a website

  - by HorusKol

  I've installed the Shibboleth module for apache on Ubuntu 10.04 using aptitude to install libapache2-mod-shib2 as per https://groups.google.com/group/shibboleth-users/browse_thread/thread/9fca3b2af04d5ca8?pli=1 and enabled the module (I have checked in /etc/apache2/mods-enabled) I then proceeded to secure a directory on the server by placing a .htaccess file with the following directives: AuthType shibboleth ShibRequestSetting requireSession 1 Require valid-user Now - I haven't set up an SSL host yet - and I also haven't set up the IdP - but I would expect that the server would block access to this directory - but I'm getting the content without any problems. I have restarted the apache service and I have no errors in the log files.

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• How to change theme in Windows 7 with Powershell script?

  - by Greg McGuffey

  I would like to have a script that would change the current theme of Windows 7. I found the registry entry where this stored, but I apparently need to take some further action to get windows to load the theme. Any ideas? Here is the script that I'm trying to use, but isn't working (registry updated, but theme not changed): ###################################### # Change theme by updating registry. # ###################################### # Define argument which defines which theme to apply. param ( [string] $theme = $(Read-Host -prompt "Theme") ) # Define the themes we know about. $knownThemes = @{ "myTheme" = "mytheme.theme"; "alien" = "oem.theme" } # Identify paths to user themes. $userThemes = " C:\Users\yoda\AppData\Local\Microsoft\Windows\" # Get name of theme file, based on theme provided $themeFile = $knownThemes["$theme"] # Build path to theme and set registry. $newThemePath = "$userThemes$themeFile" $regPath = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Themes\" Set-ItemProperty -path $regPath -name CurrentTheme -value $newThemePath # Update system with this info...this isn't working! rundll32.exe user32.dll, UpdatePerUserSystemParameters Thanks!

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• XenServer migrate machines between hosts

  - by Hubert Kario

  I have a XenServer 5.6 Free setup with 5 VMs (Windows and Linux) using about 1.5TB of directly attached storage. Because our virtualisation needs have grown a bit, we currently are preparing a faster XenServer 6.0 Free machine with more RAM and a more storage. Again, directly attached disks. How can I migrate the VMs between XenServer machines? I don't need to keep the machines up and running during migration, but using VM export and import would definitely take too long. Would making a VM with the same configuration on new host and dd'ing the LVM volume over network be the only quick and least painful solution? Are there any "gotchas" I should look out for when doing something like this? The old machine has an AMD Phenom II, the new has Intel Xeon E5 CPUs.

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• dragonflyBSD NFS server and windows 2008 client promission deny

  - by altman

  I have setup a dragonflyBSD NFS server and a windows 2008 NFS client(it's in the linux-KVM). The dragonflyBSD exports file like this: /tank -mapall=root windows-client and i setup my windows 2008 a NFS client all right. There is my win cmd to mount NFS. mount \\dragonfly-server\tank e:\ After finished my configuration. I found the windows client can mount the remote tank partition. And i can create a file or a dir. But when i try to delete the file i just create. It alerts permission deny. You must have the permission.And the same result when i try to write to the text i create in the NFS partition I don't know why i just can create the file through NFS, but can't do any thing else. Is there any body can help?

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