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• Recurring network issues the same time every day.

  - by Peter Turner

  Something has been happening on my company's network at 9:30 every day. I'm not the sysadmin but he's not a ServerFault guy so I'm not privy to every aspect of the network but I can ask questions if follow up is needed. The symptoms are the following : Sluggish network and download speed (I don't notice it, but others do) 3Com phones start ringing without having people on the other end. We've got the following ports exposed to the public for a web server, a few other ports for communicating with our clients for tech support and a VPN. We've got a Cisco ASA blocking everything else. We've got a smallish network (less than 50 computers/vms on at any time). An Active Directory server and a few VM servers. We host our own mail server too. I'm thinking the problem is internal, but what's a good way to figure out where it's coming from?

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• linux shell, keep task alive for specified time

  - by liori

  Hello, I am looking for a tool to keep a task alive (restarting if necessary) for a specified amount of time (in seconds), and then kill it and stop. For example: keep_for 3600 rsync foo bar:faz should for try to synchronize a directory (restarting rsync in case of f.e. dropped connection), but explicitly kill rsync and stop respawning it after an hour. I tried to write a shell script for that, but it was surprisingly difficult to write, with lots of edge cases (like child process not getting killed, or shell escaping issues). So... maybe there already is a tool for that?

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• Slow upload to Server 2008 DC, Downloads work as expected

  - by Anthony

  I have a Windows Server 2008 Domain Controller that I run as a do-it-all server. It has a GbE connection to the network and to every machine on the network. Downloads from the server file shares work as expected, between 70MB/s and 80MB/s to all the machines. However, when I try to copy files back up to the server, speeds fall to 7MB/s-10MB/s. I've disabled flow control and large send offload properties on all the NICs. I had this problem before and managed to fix it through some properties changes, but like an idiot, I never documented my fix and have since moved to a new server. Any ideas what I need to do to get the speeds to be more symmetric? EDIT: Remote differential compression is also disabled.

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• What configuration changes needed on tcServer to work with Apache Web server

  - by aos37

  Hi, I have Apache Webserver 2.2.17 and tcServer-6.0.20 and I want to dispatch requests from apache to tcserver. I am using mod_jk.so and I have the following in httpd.conf LoadModule jk_module modules/mod_jk.so <IfModule jk_module> JkWorkersFile /x/y/apache2/conf/workers.properties JkLogFile /x/y/apache2/logs/mod_jk.log JkLogLevel info JkLogStampFormat "[%a %b %d %H:%M:%S %Y] " JkMount /xyz/* ww </IfModule> My workers.properties file under /x/y/apache2/conf/workers.properties has worker.list= ww worker.ww.type=ajp13 worker.ww.port=12000 worker.ww.host=www.abc.com I'm new to tcServer (and tomcat) and I don't know what changes I have to make in server.xml on tcServer to get this to work with Apache. Any help would be appreciated.

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• Getting VPN to work from Virtual PC

  - by strobaek

  Setup: Host is running Windows7. Virtual PC is a Windows Server 2008 running under VMWare workstation 6.5. From the Host I have a VPN to e.g. TFS and other resources. From the VPC I need to connect to e.g. a SQL server via the VPN. My problem is, that I cannot get a connection from the VPC. If I'm sitting on the corporate network, all is working fine (but then I don't have the VPN). From home - where the VPN is required - it does not work. I have two network adapters defined/configued. One as BRIDGED and one as Host Only. IF I change the one being BRIDTED to NATS I have no connectivity at all from the VPC. I have no problems connecting from my host to the VPC. Thanks.

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• How to troubleshoot ping request time out [closed]

  - by user28317

  I have a Windows 7 and an XP machine connected to a NETGEAR wireless router. Both machines can log into the network and surf the web. Both are connecting wirelessly. I can ping the router from each machine and get a reply. I can ping each machine from the router and get a reply. But i cannot ping each machine from the other; getting a request time out. Subnet IP Addresses are 192.168.1.* Router =1; Win7 = 10; XP = 11; Firewall is currently off in both systems. Since i can ping from router im picking that not the problem anyway. If i try to ping from xp to win7 i get Request Timed Out. If i try to ping from Win7 to Xp i get destination host unreachable. What should i do now? Thanks

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• How can I make the NetworkManager work?

  - by Yang Jy

  I am running a version of RHCE6 on my laptop, and lately I've been trying various stuff about network configuration through command line. Last night, I tried removing the NetworkManager using "yum remove NetworkManager" from the system, so that I could have more control of the network through the command line. But the result is, I didn't manage to configure the wireless connection through wpa_supplicant, and I need wireless connection during my travel to another place. So I need the wireless function back as soon as possible. I typed " yum install NetworkManager", some version installed, but I don't get to have an icon on the taskbar, and of course, the network doesn't work. The package I previously removed(about 24MB) was much larger that the one I just installed(about 2MB), so I think some dependencies must be missing. How could I install all these dependencies? Please help!

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• Own website fails to load first time

  - by AmazingDreams

  I have a website running on a VPS, every time I first try to load the website the connection times out. If I press try again, it loads directly. I'm not sure whether this is a DNS issue or a server issue. As far as I know everything is set up correctly. Also, it has been doing this from the moment I got this server and set up my domain name. And that's about two to three months ago. You may take a look here: http://www.wegotcha.nl/ As you can see at this moment it's just an image, there are no scripts running in the background or anything. The only error Apache gives me is that favicon.ico cannot be found. It's an Apache webserver running on Ubuntu 12.04.1 (newest version) I update all packages almost every day (apt-get update && apt-get upgrade). I am merely an amateur on the area of webservers so any help will be appreciated. :)

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• how to make SFTP work on Windows

  - by cyberkiwi

  What is the correct way to set up sshwindows for SSH key authentication? Does the user need to be created in Windows first or can a login be inserted into passwd without a Windows equivalent? I've searched on Google and have tried the tutorials and quick start guides. So far, exactly 0 have worked. None pointed out that to work in Windows 2008 R2, you need to change the properties of cygrunsrv.exe to "Windows XP SP3" compability mode to even get past the service startup "error 1067". Although it is running, no amount of configuration allowed me to log on to the SFTP server, even though I tried (from another machine): same user account added using "mkpasswd" + windows password same user account added using "mkpasswd" + public ssh key (added to /home/theuser/.ssh) On Windows 2003 R2 (a different attempt), the service would crash every time it started up. Some links I went through http://pigtail.net/LRP/printsrv/cygwin-sshd.html http://forevergeeks.com/how-to-setup-a-secure-ftp-sftp-site-with-openssh-on-windows/ http://support.moonpoint.com/os/windows/server2003/openssh-service-not-starting.html

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• Resizing partition in VMware Fusion didn't work

  - by Robot

  I migrated a Parallels VM to VMware Fusion. That worked well, although the original partition size was way too small (8GB). Following some instructions from VMware, I used the Fusion GUI to extend the size of the disk to 20GB, and then I booted from a GPartEd LiveCD to grow the C: partition to the full 20GB. That seemed to work, and I can see that the disk is 20GB in Disk Manager, but it still thinks the actual partition is 8GB. Here is a screenshot of it. What can I do to get the entire 20GB usable?

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• Creating encrypted database for work

  - by Baldur

  My boss posed this problem to me: Encrypted: We need an encrypted database for miscellanious passwords we use at work that are currently only in people's head. Easily accessable: Someone needs to be able to quickly access specific passwords, possibly at hectic moments. This requires any sort of public key management (keeping it on a USB key in a sealed envelope?) to be relatively easy. Access control: The system should have groups of passwords where only specific people have access to specific groups. Recoverability: We need to make sure passwords from one group aren't lost even if the only users with direct access quit or pass away—hence we need some way where (for example) any two members of senior management may override the system (see the treshold link below) and retrieve all the passwords with their key. The first thing that jumped into my mind was some form of threshold and asymmetric cryptography but I don't want to reinvent the wheel, are there any solutions for this? Any software should preferrably be free and open-source.

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• Is Page-Loading Time Relevant?

  - by doug

  Take this (ServerFault) page for instance. It has about 20 elements. When the last of these has loaded, the page is deemed "loaded"--but not before. This is certainly the protocol used by our testing service (which is among the small group of well-known vendors that offer that sort of service). Obviously this method is based on a clear, definite endpoint--therefore it's easy to apply w/ concomitant reliability. I think it's also the metric used by the popular Firefox plugin, 'YSlow.' For my employer's website, nearly always the last-to-load items are tracking code, tracking pixels, etc., so from the user's point of view--their perception--the page was "loaded" well before it had actually loaded based on the criterion used by our testing service (15-20% is a rough estimate). I'm sure i'm not the first person to consider this nor the first to wonder if it is causing micro-optimization while ignoring overall system-level, or user-perceived performance. So my question is, are there are other more practical (yet still reasonably precise) measures of page loading time?

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• Restrict Administrators from changing system time - Windows XP machines (no domain)

  - by user72128

  I need to write a script that will remove all users under Local Computer Policy > Computer Configuration > Windows Settings > Security Settings > User Rights Assignment > Change the system time from the local group policy (gpedit.msc) on all Windows XP machines. These machines are not on the domain. I DO have a way to distribute and run the script automatically. Can someone point me in the right direction for creating a script like this?

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• first of all nice work,, how to redirect the url of old modified directries

  - by kath

  I really appreciate your hard work after searching lot of web i cannot find the answer so if you get time please try to find what i should so the problem is its a website for classifieds ads before i modified or better word edited the category name but its still showing up in Google index and even in browser URL so is there any way to by pass or redirect it to new one i tried .htaccess but cant get the the result here is the both URL list before modification http://adsbuz.com/vehicles-cars/other-vehicles/selling-my-2010-toyota-sequioa-19500-9585.htm after editing category name (modified one) http://adsbuz.com/vehicles-cars-for-sale/other-vehicles/selling-my-2010-toyota-sequioa-19500-9585.htm (edited category name was before ""vehicles-car"" and after editing is ""vehicles-cars-for-sale"" as you can see both URL opens and not good for seo. and is there any way some one opens wrong url but page opens only with corect url automatically just like in your site.. consider me new in this market and want little help here (the website is in php) thanks Really appreciate your quick response thanks kath

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• Can't get nmap to work under Windows 7 64 bit

  - by jitbit

  I'm trying to install and run the nmap tool to test my server, but it keeps saying Note: Host seems down. If it is really up, but blocking our ping probes, try -P0 and showing all the server ports are closed. Which is not true - the server is up and has lots of open ports. Any ideas? UPDATE: Just to clarify - the server can be pinged and port-scanned fine by other programs. It's juts nmap that does not work. Even "google.com" seems to be down for nmap.

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• How do I get PHP to work with UserDir

  - by Callmeed

  I've got a fresh CentOS 5.5 box and have installed Webmin+VirtualMin 3.79. I've enabled UserDir in apache and the sites are visible via http://ipaddress/~user/ but PHP does not work. (PHP works fine if I visit the site via it's domain) Here's what I put in my httpd.conf to get where I'm at: <IfModule mod_userdir.c> UserDir public_html </IfModule> <Directory /home/*/public_html> Options -Indexes +IncludesNOEXEC +FollowSymLinks +ExecCGI allow from all AllowOverride All AddHandler fcgid-script .php AddHandler fcgid-script .php5 </Directory> When I try to hit a PHP file, I get a 500 error and the following is logged to /var/log/httpd/error_log: suexec failure: could not open log file fopen: Permission denied Any help/direction is appreciated.

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• CentOS 6 init script doesn't work properly

  - by user711643

  I'm setting up my ruby production server based on CentOS 6. I need a process called god (which is a process monitoring tool) to start at boot. I'm using an init script that I found here. Just as stated in the guide I ran: chkconfig --add god and then chkconfig --level 345 god on After this if I run "service god start|restart" everything works. It loads the available configurations and brings up the related processes (if they are not running). Problem is it doesn't work at boot. If I reboot the system, then I do "ps -aux | grep god". At this point "god" is running but apparently it didn't load the configuration files. If i run again service god restart, it loads everything without problems. What am I doing wrong?

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• Internet Connection Dying after some time

  - by Rahul

  I'm using BSNL 3G USB Datacard(BSNL is a ISP in India). After connecting to internet, while browsing in browser, the connection is dying. So after disconnecting & connecting back, it works proper for some time & the same problem repeats. But if I'm downloading any movie or some file through uTorrent, the connection is not dying. I'm experiencing this problem in Vista & also in Ubuntu. Help me with this please. Thank you.

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• Portable Display doesn't work anymore

  - by RipCord

  My USB portable monitor will not work since I installed the hard drive onto an HP laptop. I have installed all the new hardware drivers and do not have any more device issues in device manager view. My old laptop was a lenovo. The new one is an HP. The system seems to recognize devices that I connect via, usb but the portable display still does not show anything on the screen. It is probably a conflict in the registry but I'm not sure how to find it and the Power User does not have the luxury of letting me troubleshoot for hours to isolate the problem.

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• Stereo Mix does not work

  - by rfw

  Stereo Mix no longer seems to work on my computer -- it did once, but now I am unable to receive any sort of audio from it. When trying to record it with programs such as Audacity, it reports that there is an error opening the sound device. Additionally, I can make no changes whatsoever to Stereo Mix, such as with regards to default format, where it simply reports Format not supported by device. I am sure that Stereo Mix had definitely worked in the past, so does anyone have any idea as to why Stereo Mix would suddenly break? (I have no applications taking exclusive control of Stereo Mix)

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• wifi connection turns off oll the time

  - by er-v

  Hello! I realy need help with one strange problem. I have a wifi network in my appartment with wireless N home router Trendnet tew-652BRP. Everething work fine for three of my laptops, but I have one PC with D-Link DWA-140 adapter. It looses connection 2-3 times in 5 minutes. There is following messages in my system log when it does so: The browser has forced an election on network \Device\NetBT_Tcpip_{9537A5C1-3B43-4C56-B94C-CE69A257C3AD} because a master browser was stopped. The TCP/IP NetBIOS Helper service was successfully sent a stop control. The reason specified was: 0x40030011 [Operating System: Network Connectivity (Planned)] Comment: None The TCP/IP NetBIOS Helper service entered the stopped state. in order of appearence. How can I stop it? I have the latest driver installed.

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• Connection shortcut doesn't work at startup - Win 7

  - by kikio

  Hello. I want connect automatically to a network with a dial-up connection at windows startup. So after I created a new connection, I created a shortcut from this and placed it in "Startup" folder (at start menu). But after restart my system, windows 7 was coming up without start to connect to my network (that shortcut in startup didn't work!). but I placed a shortcut from Mozilla Firefox in startup folder for testing that, and it started at windows booting. My windows is WINDOWS 7 ULTIMATE. What can I do??? Please help me!!!

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• Files copying between servers by creation time

  - by driftux

  My bash scripting knowledge is very weak that's why I'm asking help here. What is the most effective bash script according to performance to find and copy files from one LINUX server to another using specifications described below. I need to get a bash script which finds only new files created in server A in directories with name "Z" between interval from 0 to 10 minutes ago. Then transfer them to server B. I think it can be done by formatting a query and executing it for each founded new file "scp /X/Y.../Z/file root@hostname:/X/Y.../Z/" If script finds no such remote path on server B it will continue copying second file which directory exists. File should be copied with permissions, group, owner and creation time. X/Y... are various directories path. I want setup a cron job to execute this script every 10 minutes. So the performance is very important in this case. Thank you.

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• MS Clear Screen Saver doesn't work

  - by ufoq

  I have a problem with really exotic thing - Microsoft Clear Screen Saver. As it's name suggests, it's a screen saver, that's transparent (MS posted it as a part of W2k Resource Kit). When you move the mouse/hit a key, the "lock" dialog appears. I would like to use this to view servers desktops without need to log in. I tested it on my XP's, and it works flawlessy. But on W2K3 servers it doesn't work. After the screensaver timeout, the error message is displayed: "The Clear Screen Saver cannot display the user desktop after the workstation has been locked"

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• USB Mouse doesn't work after turning on Laptop

  - by Barry

  I have a USB mouse attached to my laptop which does not work when I switch my laptop on. I have to unplug it and plug it back in before it works. When I do this no driver installation occurs (presumably because it has already done this) the usual beep sound does occur and the mouse starts working again. If my laptop goes to sleep I can move the mouse and the laptop comes back to life. In fact it works perfectly apart from this annoying niggle on startup. Can anyone shed any light as to why I have to keep unplugging and plugging my mouse back on startup? I am running Windows 7 Home Premium Service Pack 1 (64 bit) on a Toshiba Satellite L755-1LL Laptop.

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