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• SNMPD - passing values in a trap

  - by ethrbunny

  Im trying to create an SNMP setup to monitor 500-1K machines. Each will be joined to the SNMPTRAPD server via a VPN. When the client system sends its messages, it's sending its internal address instead of the VPN address even though the 'trapsync' command is using the VPN. This will be a problem as many of these system will have DHCP addresses based on location so there will be overlap. What I'd like to figure out is how to pass extra values with the trap so I can identify which system a given trap comes from.

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• Weird routing problems with VPN

  - by Borek

  In our VPN setup I have to add a route to my routing table like this: route add 1.2.3.0 mask 255.255.255.0 172.16.1.1 -p Our internal addresses 1.2.3.x then use 172.16.1.1 as their gateway and both my local internet and work VPN can work at the same time. However, when I disconnect from VPN and reconnect again, I can't ping our servers even though the connection status is "Connected". When I do route print my previously added route is listed but it doesn't seem to work. So I try to execute that 'route add' command again and as expected, it tells me that The route addition failed: The object already exists. But - and that's the point - when I now try to ping our servers again, everything works! So every time, I have to execute this route add command that will fail but fix the issue at the same time. Any ideas what I might be doing wrong? My PC is Windows 7 x64, I am Administrator, UAC is enabled and the command prompt is run with elevated privileges.

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• Replacing hyperlinks in Apache2 ProxyPass

  - by Jeroen

  I am using Apache2 with mod proxy on Ubuntu 12.04 as a reverse proxy to some back-end server: <VirtualHost *:80> ProxyPass / http://somewhere.com/mysite ProxyPassReverse / http://somewhere.com/mysite ServerName www.mysite.nl ServerAlias mysite.nl *.mysite.nl </VirtualHost> However, unfortunately the back-end server has some internal links hardcoded; e.g. a link to somewhere else in the site has <a href="http://somewhere.com/mysite/something"> instead of just <a href="something.png">. Is there a way I can use Apache to replace strings in the body as served by the backend before passing it back to the client? E.g replace all instances of "http://somewhere.com/site/" with "http://mysite.nl/" ? I know nginx or so is better as a reverse proxy, but the server is hosting other stuff so port 80 needs to be Apache2.

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• Firewalling gateways and IDS's

  - by Scott Davies

  Hi, For IDS, I plan to have a Win 2008 server running on the gateway with the majority of roles disabled. I plan to firewall the Internet connection, but I'd also like to install Snort to work as an IDS. However, I am guessing that regardless of the Snort install of the promiscuous Winpcap driver, I won't be able to monitor ports that the firewall blocks. My thinking is that chain of flow is: Internet-Firewall on Win 2008-Winpcap-Snort-internal network Is there a way to still monitor services that the firewall will block (i.e. TCP 445 SMB) ? Perhaps run the data through Snort and then through the firewall ? Thanks

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• Cloning Windows 7 installation from MBR to GPR drive and make it bootable

  - by Nelluk

  I've seen threads on similar topics - such as this one - but the answers never seem to solve how to make it bootable. I have Win 7 64-bit on a PC installed on a 2tb MBR volume. The motherboard is UEFI compatible. I just installed a secondary internal 3TB drive which will be partitioned as GPT. Is there a relatively easy way to clone my installation over to the new drive and have that drive be bootable? I have used EaseUS Partition Master to clone the C volume to the D volume, but that would not boot and I assume the issue is that one is MBR and one is GPT. Is there a process to do this?

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• Port forwarding for VNC on Dynalink RTA1335 not working

  - by Curyous

  I've vnc-java running on an Ubuntu box, with the IP address 192.168.1.68, using port 5800 (because port 5900 is being used for normal VNC). If I connect to 192.168.1.68:5800 using another computer on the network, I can use VNC fine. Using www.whatismyip.com, I find out what my IP address from the outside world is, and if I go directly to that, I get to access my modem/router. If I try to navigate to that IP address, with ':5800' on the end, I get a "This web page is not available." error. I have port forwarding set up in the router as follows: Application Name External Packet Internal Host IP Address Protocol Port IP Address Port VNC ALL TCP/UDP 5800 192.168.1.68 5800 What else do I need to do to get this to work?

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• Installing isolated instance of MySQL on Windows using silent install with .msi

  - by Abram

  I'm trying to write an installer for an internal application we wrote. After it installs our application it then installs MySQL using the .msi installer in silent mode. I specify the install dir and data dir to that of a directory within my application's install directory, such as: msiexec /i @@MYSQL_INSTALLER_FILE@@ /qn INSTALLDIR="@@INSTALL_DIR@@\MySQL\" DATADIR="@@INSTALL_DIR@@\MySQL\" USERNAME="@@DB_USER@@" PASSWORD="@@DB_PASS@@" (the @@variable@@'s are replace by my installer routine using InstallJammer) Once installed, I use mysqld.exe to install a windows service with a custom service name and defaults file like so: mysqld.exe --install CustomMySQL --defaults-file="@@INSTALL_DIR@@\MySQL\my.ini" This works fine as long as there is not already another instance of MySQL installed. If there is it silently fails to install MySQL. Running the msi installer manually (double-click) shows an error that a previous version is already installed and just aborts. Is there a way to automate installing MySQL as an isolated instance, regardless of whether another version/instance is already installed?

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• HP DL180 G6 P410 8x SATA 1TB, what is the optimal configuration?

  - by Oneiroi

  I have a HP DL180 G6 with a P410 raid controller. Presently this runs using 4x 1TB Samsung Spinpoint SATA drives, in a RAID10 configuration using default settings. I am about to add a backplane to increase the drive capacity from 4 to 12 drives, and I plan to install 4 more 1TB SATA Drives. The drives are matched and have close serial numbers (They arrived together in the Manufacturers pallet). Model HD103UJ 1000GB/7200rpm/32M Rated for 3GB/s I will also be installing RHEL 6.1 x86_64. My question is what would be the optimal RAID settings (stripe etc.) for this configuration? To recap: 8x Model HD103UJ 1000GB/7200rpm/32M Rated for 3GB/s RAID 10 configuration. Thanks in advance. Update for role: Server is to become an iscsi target for an internal openstack deployment currently underway. (Glance) Will also provide virtualisation through KVM

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• Can't run telnet in console opened by Autohotkey

  - by Steve Crane

  I have enabled the telnet client on my Windows 7 64-bit machine and if I open the start menu and launch cmd from there I can run telnet. I normally use the keyboard shortcut Win-C, implemented by this AutoHotkey snippet to open a console. #c::Run, C:\WINDOWS\system32\cmd.exe For some strange reason when I try to run telnet in a console window opened this way I get Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\Steve\Documentstelnet 'telnet' is not recognized as an internal or external command, operable program or batch file. Running path in any console, regardless of how it was opened produces the same output. Can anyone shed any light on why telnet might run in one console but not the other?

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• Good option for a transparent internet gateway on Mac OS X

  - by Gareth

  Hi I have a small network of Mac systems, and would like to add some internal monitoring of our internet usage, which has recently begun to climb. I would like to configure one of the machines as an internet gateway, and install some monitoring software that could provide graph indications of network usage by machine. The machine would then double as a workstation and as the internet gateway. I can manually configure the machines on the network to use it as a gateway, and would prefer to avoid an explicit http proxy (although it is an option if necessary). What software would serverfault users recommend to provide simple, easily configurable and maintainable network monitoring on Mac OS 10.5.7 (non-server)? The simplest requirement is monitor usage by IP Address, but additional tracking (e.g. destination, protocol, etc) would be useful.

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• Open-source training class/room/instructor resource management software?

  - by Kyle Eli

  We're looking to replace an internal system used for managing training classes with something a bit more robust. Needs to be open-source or have a license level that grants access to source, and needs to be ASP.net (C# preferred, but could live with VB.net) Ultimately, we'll need to be able to assign facilities and instructors, manage attendees, send notifications, and build calendar views. We'll also be integrating with our website to allow on-line sign-up and other things for attendees to manage on their own. We do expect to implement quite a bit of it in-house, but we'd like as broad of a base to start from as we can get. Still, just a really good web-based meeting-room reservation system might make a good enough starting point. In list form: Meeting/training resource management softwareASP.net (C# or VB.net)Source availableWe're expecting to have to modify the software to meet all of our requirements

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• Strange port forwarding problem

  - by rAyt

  I've got a strange port forwarding problem. The port forwarding to my internal webserver (10.0.0.10 on Port 80) works without a problem but the port forwarding to a windows server (10.0.0.15) on port 3389 doesn't work. The port 3389 is open. Any ideas? thanks! #!/bin/sh IPTABLES="/sbin/iptables" $IPTABLES --flush $IPTABLES --table nat --flush $IPTABLES --delete-chain $IPTABLES --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE $IPTABLES -t nat -A PREROUTING -p tcp -i eth0 -d 188.40.XXX.XXX --dport 3389 -j DNAT --to 10.0.0.15:3389 $IPTABLES -t nat -A PREROUTING -p tcp -i eth0 -d 188.40.XXX.XXX --dport 80 -j DNAT --to 10.0.0.10:80 $IPTABLES -t nat -A PREROUTING -p tcp -i eth0 -d 188.40.XXX.XXX --dport 222 -j DNAT --to 10.0.0.10:22 $IPTABLES --append FORWARD --in-interface eth1 -j ACCEPT

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• AnyConnect SSL VPN split tunneling for a single website?

  - by Daniel Lucas

  We have a Cisco ASA 5510. We use split tunneling for AnyConnect SSL VPN clients. All internal addresses are tunnelled. Everything else is routed through the client's own internet connection. We use a SaaS service that only responds to requests when they come from one of our own public IP addresses. Because of this, VPN users are unable to access it currently. Is there a way to specify that a specific website should be tunneled and all others should not? NOTE: Worst case we will use a web bookmark on the clientless portal to tranlate through our network, but I'd like to see if the above is possible first.

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• Setting up dante socks server

  - by skerit

  I want to tunnel all my internet traffic through my vps, so I'm trying to install a proxy server. However: I can't seem to browse the internet through Dante. I get the ERR_EMPTY_RESPONSE error. This is my config: logoutput: stderr /home/user/dantelog internal: eth1 port=1080 external: eth1 method: username pam user.privileged: proxy user.notprivileged: nobody user.libwrap: nobody client pass { from: 10.0.0.0/8 port 1-65535 to: 0.0.0.0/0 } Do I really have to run 2 proxy servers: one for http and one for socks? or is there something else I can do?

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• Boot linux off hard drive and then switch to run from usb flash disk

  - by Jesse

  I have an older laptop that I want to use as a simple media server on my home network. I would like to avoid using the internal hard drive except for booting (BIOS does NOT support booting from USB). My thought was to mirror the hard drive (currently has current install of Arch Linux) onto the flash drive and then after booting switch over to run everything from the flash drive. I read the following article about using a RAM disk (HOW-TO: Boot OS into RAM for speed and silence) but ran into problem because the USB subsystem does not seem to be initialized soon enough (I create root and home paritions on the flash disk and modified fstab to pick those - didn't work). Any thoughts?

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• Apache vs Lighttpd: Weird behavior in reverse proxy mode.

  - by northox

  Context: I have an Apache server running in reverse proxy mode in front of a Tomcat java server. It handle HTTP and HTTPS and send those request back and forth to the Tomcat server on an internal HTTP port. Goal: I'm trying to replace the reverse proxy with Lighttpd. Problem: while asking for the same HTTPS url, while using Apache as the reverse proxy, the Tomcat server redirect (302) to an HTTPS page but with Lighttpd it redirect to the same page in HTTP (not HTTPS). Question: What does Lighttpd could do different in order to have a different result from the backend server? In theory, using Apache or Lighttpd server as a reverse proxy should not change anything... but it does. Any idea? I'll try to find something by sniffing the traffic on the backend tomcat server.

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• AD LDS High availability

  - by user792974

  We are currently using CAS for multiple directory authentication. AD for internal users, AD LDS for external users. I've read that NLB is a possible solution, but wondering if this is possible with SRV records, and how about you would correctly configure that. With our AD directory, I can bind with olddomain.local, and hit any of the DCs in the domain. We don't want to hardcode servernames into CAS, so the end goal is to bind with LDSdomain.gov. nslookup -type=srv _ldap._tcp.LDSdomain.gov returns _ldap._tcp.LDSdomain.gov SRV service location: priority = 0 weight = 100 port = 1025 svr hostname = server01 _ldap._tcp.LDSdomain.gov SRV service location: priority = 0 weight = 200 port = 1025 svr hostname = server02

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• magento on Zend Server (Win7) installation error

  - by czerasz

  I try to install magento for the first time. I've created the database with the name "project" in my C:\Zend\Apache2\conf\httpd.conf I added on the end: <Directory "C:\Zend\Apche2\htdocs\project"> Options Indexes FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> in my ZendServer/Server Setup/Extensions: PDO_MySQL, simplexml, mcrypt, hash, GD, DOM, iconv, curl, SOAP are on in C:\Zend\ZendServer\etc\php.ini I set: safe_mode = Off ;<-- was set to off ... memory_limit = 512M; Maximum amount of memory a script may consume (128MB) After step "Configuration" of magento installation (with Use Web Server (Apache) Rewrites enabled) I get: Internal Server Error My database is full of tables (that schould be ok) My Zend Server shows: 27-Oct 06:55 6 Severe Slow Request Execution (Absolute) http://localhost/project/index.php/install/wizard/installDb/ Critical Open 27-Oct 06:55 4 Fatal PHP Error C:\Zend\Apache2\htdocs\project\lib\Varien\Db\Adapter\Pdo\Mysql.php Critical Open 27-Oct 06:55 5 Slow Function Execution curl_exec Warning Open 27-Oct 06:55 5 Slow Request Execution (Absolute) http://localhost/project/index.php/install/wizard/configPost/ What can be wrong?

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• Plesk directory structure problems

  - by johnnietheblack

  I have an entire website with the following directory structure: /example.com /html (public) /css /js index.php /lib session.php other_lib_files.php /views index.php /models /controllers As illustrated, the html is public, and anything above it is private. My site now needs to upgrade servers, and the new server (Linux w/ Plesk) has the following structure (reduced to the problematic parts below): /myplesksite.com /httpdocs /css /js index.php /private /lib /models /views What I would THINK is that I should be able to put my /lib, /views, /models, etc in the directory directly above /httpdocs, the same way I had it in my previous server. Is that possible? Or do I have to put it in private? I would really love not to have to adjust my internal paths throughout the site if not necessary...

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• How does Amarok rip Audio CDs (in Ubuntu Lucid)?

  - by Hanno Fietz

  I'm in the process of moving my CD collection into my Amarok library. Mostly, it works great. Sometimes however, the process just hangs forever. The problem seems to occur at random (i. e. often, but not always at the same disk/track) and the consequences range from none (successful after cancel/retry) to Amarok's internal db becoming completely messed up. I would like to investigate and file a proper bug report or find a fix / workaround, but I don't understand how Amarok does the ripping. When all is working, there's a lame process encoding to a temporary file, which appears in my collection once it's finished. When the process hangs, that lame command is still there, but waiting forever for data on stdin, which seems to come from a third process. That seems to be kio_audiocd, but I don't know whether that's correct and what it's supposed to do. What's going on?

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• Is an Intel Atom D525 suitable to run MythTV

  - by Martin Thompson

  I have an oldish netbook with an Atom N450 (1.6GHz, 512KB cache) - I've been using it to experiment with MythTV, but it seems really slow, even just to work through the menus! Seconds, sometimes 10 or 20s, to load a new menu. Admittedly from a remote backend, but my older Core1 based laptop seems to be fine with the same setup. I was hoping to use one of the so-called "nettop" devices which currently seem to be D525-based (1.8GHz, 1MB cache) - is double the cache really going to make that much difference? Or has the internal architecture of the Atom moved on leaps and bounds in between? Given that I design non-Intel embedded computers for a living I was hoping to get lots of hardcore architecture detail from the Intel website, so I could see for myself, but I can't find it! So: will a D525 be fast enough to run a MythTV backend/frontend combined box?

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• router propogation usng OSPF

  - by liv2hak

  I am using Juniper J-series routers to emulate a small telco and VPN customer.I need to use OSPF so that the path to each internal subnet is propogated to all PE nodes.The network topology is given below. To achieve this I am planning to run the following commands in UOW-TAU and UOW-HAM. set protocols ospf area 0.0.0.0 interface ge-0/0/0 set protocols ospf area 0.0.0.0 interface lo0.0 Do I need to do any additional configuration in TAU-PE1 and HAM-PE1 routers for it to receive the OSPF paths.? I am a beginner at the routing.Any help is appreciated.

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• Apache2 proxypass

  - by gatsby

  i'm trying to figure out why my apache2 reverse proxy doesn't work... hope someone can clarify. i'm using an apache server as a gateway with proxy pass: 10.184.1.2 is the IP. these are PP instructions i inserted in the 000-default config file. ProxyPass / http://192.168.102.31/ ProxyPassReverse / http://192.168.102.31/ the host 192.168.102.31 is an internal IP of a subnet wich is not reachable directly by clients, but only by the apache gateway. when i try to access such a address: http://apache_gateway_name/dir i see the client trying to reach 192.168.102.31 address and of course timeout occurs. can someone help? Best regards

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• Running Python scripts in a browser

  - by sunwukung

  I want to start learning Python - and I'm having trouble getting scripts to load up in a browser (using Wamp). So far I've tried the following: 1: add the following lines to httpd.conf: AddHandler cgi-script .py Options ExecCGI I navigate to localhost/path/to/script/myscript.py but get an Internal Server error. 2: downloaded mod_wsgi-win32-ap22py26-3.0.so - renamed to mod_wsgi (running Wamp with Apache 2.2) added the following lines to httpd.conf AddHandler mod_wsgi .py WSGIScriptAlias /wsgi/ "path/to/my/pythonscripts/folder/" but when I navigate to the script - it renders the script in it's entirety i.e. #!c:/Python26/python.exe -u print "hello world" I managed to get CherryPy working, but ideally I want to learn the language in a relatively raw context before digging into a framework. Can anyone give me some pointers?

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• RewriteCond in .htaccess file gives me bad flag delimiters

  - by Steven

  I'm upgrading a website and I use this .htaccess file to show maintenance page: #MAINTENANCE-PAGE REDIRECT RewriteEngine on RewriteCond %{REMOTE_ADDR} !^127\.0\.0\.0 # Bogus IP address for posting here RewriteCond %{REMOTE_ADDR} !^127\.0\.0\.0 # Bogus IP address for posting here RewriteCond %{REQUEST_URI} !^/maintenance\.html$ RewriteRule ^(.*)$ http://www.mysite.no/maintenance.html [R=307,L] This opens the maintenance page for all users except the two IP addresses I've added. They get an Internal Server Error. I've used thesame script on another site, and that worked fine. Looking at the error log, I see the following: /var/www/vhosts/mysite.no/httpdocs/.htaccess: RewriteCond: bad flag delimiters If I remove my .htaccess file, I can work with my site just fine. My site is hosted on a VPN using CentOS 5. How can I fix this problem?

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