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  • NAT, iptables and problematic ports

    - by Rajie
    I am building a small office network with virtual machines. My schema is this: Computer A: gateway, ip 1.1.1.1, iptables used for NAT [eth0=public internet dhcp, dhcp; eth1=gateway] Computer B: client, ip 1.1.1.2, using gateway from Computer A. NAT is working, and Computer B can access the internet using the A's gateway. I redirected some incoming ports from A to B (for instance, if A receives a request to port 80, it goes automatically to Computer B's Apache). The thing is that I do not really understand how to open/close ports for Computer B from Computer A. I know how to close a port: iptables -A INPUT -p tcp --dport 80 -j DROP And it will refuse all incoming (not output) connections to port 80. However, this works for main interface eth0. I tried to, for instance, drop ingoing and outgoing connections for Computer B, port 80: iptables -A FORWARD -i eth1 -o eth0 -p tcp --dport 80 -j DROP iptables -A FORWARD -i eth0 -o eth1 -p tcp --dport 80 -j DROP But it does not work. And I cannot figure out what I am doing wrong. Any clue?

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  • Could this server log mean my server is being used as a proxy?

    - by So Over It
    I came across the following entry in my access.log: 58.218.199.147 - - [05/Jun/2012:12:56:04 +1000] "GET http://proxyproxys.com/ HTTP/1.1" 200 183 "-" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)" Normally when I see a full URL entry in my access.log I assume it is log spam with people trying to get me to access their site. These entries are normally followed with a 404 response. The above entry is followed with a 200 'success' response! Doing some searching it would seem that this can occur when someone is trying to use your server as a proxy. This disturbed me more - especially because the URL in question has the word proxy in it. Going to the site 'proxyproxys.com' (using hidemyass.com to protect my own identity), the site returns what appears to be some sort of 'proxy judge' ---------------------------------------- HTTP_ACCEPT=text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 HTTP_ACCEPT_LANGUAGE=en-US,en;q=0.8 HTTP_USER_AGENT=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_4) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.53 Safari/536.5 HTTP_CONNECTION=close REMOTE_PORT=56355 REMOTE_HOST=74.63.112.142 REMOTE_ADDR=74.63.112.142 ---------------------------------------- CS_ProxyJudge Result=HIGH_ANONYMITY ---------------------------------------- Question: 1) does the 200 success mean that someone has been able to successfully use my server as a proxy? 2) are there other means of confirming if my server is being used as a proxy 3) can you refer me to documentation to help 'close up' my security gap if there is one. Thanks.

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  • Users using Perl script to bypass Squid Proxy

    - by mk22
    The users on our network have been using a perl script to bypass our Squid proxy restrictions. Is there any way we can block this script from working?? #!/usr/bin/perl ######################################################################## # (c) 2008 Indika Bandara Udagedara # [email protected] # http://indikabandara19.blogspot.com # # ---------- # LICENCE # ---------- # This work is protected under GNU GPL # It simply says # " you are hereby granted to do whatever you want with this # except claiming you wrote this." # # # ---------- # README # ---------- # A simple tool to download via http proxies which enforce a download # size limit. Requires curl. # This is NOT a hack. This uses the absolutely legal HTTP/1.1 spec # Tested only for squid-2.6. Only squids will work with this(i think) # Please read the verbose README provided kindly by Rahadian Pratama # if u r on cygwin and think this documentation is not enough :) # # The newest version of pget is available at # http://indikabandara.no-ip.com/~indika/pget # # ---------- # USAGE # ---------- # + Edit below configurations(mainly proxy) # + First run with -i <file> giving a sample file of same type that # you are going to download. Doing this once is enough. # eg. to download '.tar' files first run with # pget -i my.tar ('my.tar' should be a real file) # + Run with # pget -g <URL> # # ######################################################################## ######################################################################## # CONFIGURATIONS - CHANGE THESE FREELY ######################################################################## # *magic* file # pls set absolute path if in cygwin my $_extFile = "./pget.ext" ; # download in chunks of below size my $_chunkSize = 1024*1024; # in Bytes # the proxy that troubles you my $_proxy = "192.168.0.2:3128"; # proxy URL:port my $_proxy_auth = "user:pass"; # proxy user:pass # whereis curl # pls set absolute path if in cygwin my $_curl = "/usr/bin/curl"; ######################################################################## # EDIT BELOW ONLY IF YOU KNOW WHAT YOU ARE DOING ######################################################################## use warnings; my $_version = "0.1.0"; PrintBanner(); if (@ARGV == 0) { PrintHelp(); exit; } PrimaryValidations(); my $val; while(scalar(@ARGV)) { my $arg = shift(@ARGV); if($arg eq '-h') { PrintHelp(); } elsif($arg eq '-i') { $val = shift(@ARGV); if (!defined($val)) { printf("-i option requires a filename\n"); exit; } Init($val); } elsif($arg eq '-g') { $val = shift(@ARGV); if (!defined($val)) { printf("-g option requires a URL\n"); exit; } GetURL($val); } elsif($arg eq '-c') { $val = shift(@ARGV); if (!defined($val)) { printf("-c option requires a URL\n"); exit; } ContinueURL($val); } else { printf ("Unknown option %s\n", $arg); PrintHelp(); } } sub GetURL { my ($URL) = @_; chomp($URL); my $fileName = GetFileName($URL); my %mapExt; my $first; my $readLen; my $ext = GetExt($fileName); ReadMap($_extFile, \%mapExt); if ( exists($mapExt{$ext})) { $first = $mapExt{$ext}; GetFile($URL, $first, $fileName, 0); } else { die "Unknown ext in $fileName. Rerun with -i <fileName>"; } } sub ContinueURL { my ($URL) = @_; chomp($URL); my $fileName = GetFileName($URL); my $fileSize = 0; $fileSize = -s $fileName; printf("Size = %d\n", $fileSize); my $first = -1; if ( $fileSize > 0 ) { $fileSize -= 1; GetFile($URL, $first, $fileName, $fileSize); } else { GetURL($URL); } } sub Init { my ($fileName) = @_; my ($key, $value); my %mapExt; my $ext = GetExt($fileName); if ( $ext eq "") { die "Cannot get ext of \'$fileName\'"; } ReadMap($_extFile, \%mapExt); my $b = GetFirst($fileName); $mapExt{$ext} = $b; WriteMap($_extFile, \%mapExt); print "I handle\n"; while ( ($key, $value) = each(%mapExt) ) { print "\t$key -> $value\n"; } } sub GetExt { my ($name) = @_; my @x = split(/\./, $name); my $ext = ""; if (@x != 1) { $ext = pop @x; } return $ext; } sub ReadMap { my($fileName, $mapRef) = @_; my $f; my @arr; open($f, '<', $fileName) or die "Couldn't open $fileName"; my %map = %{$mapRef}; while (<$f>) { my $line = $_; chomp($line); @arr = split(/[ \t]+/, $line, 2); $mapRef->{ $arr[0]} = $arr[1]; } printf("known ext\n"); while (($key, $value) = each(%$mapRef)) { print("$key, $value\n"); } close($f); } sub WriteMap { my ($fileName, $mapRef) = @_; my $f; my @arr; open($f, '>', $fileName) or die "Couldn't open $fileName"; my ($k, $v); while( ($k, $v) = each(%{$mapRef})) { print $f "$k" . "\t$v\n"; } close($f); } sub PrintHelp { print "usage: -h Print this help -i <filename> Initialize for this filetype -g <URL> Get this URL\n -c <URL> Continue this URL\n" } sub GetFirst { my ($fileName) = @_; my $f; open($f, "<$fileName") or die "Couldn't open $fileName"; my $buffer = ""; my $first = -1; binmode($f); sysread($f, $buffer, 1, 0); close($f); $first = ord($buffer); return $first; } sub GetFirstFromMap { } sub GetFileName { my ($URL) = @_; my @x = split(/\//, $URL); my $fileName = pop @x; return $fileName; } sub GetChunk { my ($URL, $file, $offset, $readLen) = @_; my $end = $offset + $_chunkSize - 1; my $curlCmd = "$_curl -x $_proxy -u $_proxy_auth -r $offset-$end -# \"$URL\""; print "$curlCmd\n"; my $buff = `$curlCmd`; ${$readLen} = syswrite($file, $buff, length($buff)); } sub GetFile { my ($URL, $first, $outFile, $fileSize) = @_; my $readLen = 0; my $start = $fileSize + 1; my $file; open($file, "+>>$outFile") or die "Couldn't open $outFile to write"; if ($fileSize <= 0) { my $uc = pack("C", $first); syswrite ($file, $uc, 1); } do { GetChunk($URL, $file, $start ,\$readLen); $start = $start + $_chunkSize; $fileSize += $readLen; }while ($readLen == $_chunkSize); printf("Downloaded %s(%d bytes).\n", $outFile, $fileSize); close($file); } sub PrintBanner { printf ("pget version %s\n", $_version); printf ("There is absolutely NO WARRANTY for pget.\n"); printf ("Use at your own risk. You have been warned.\n\n"); } sub PrimaryValidations { unless( -e "$_curl") { printf("ERROR:curl is not at %s. Pls install or provide correct path.\n", $_curl); exit; } unless( -e "$_extFile") { printf("extFile is not at %s. Creating one\n", $_extFile); `touch $_extFile`; } if ( $_chunkSize <= 0) { printf ("Invalid chunk size. Using 1Mb as default.\n"); $_chunkSize = 1024*1024; } }

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  • Access violations on Windows 2008 VPS

    - by James Hay
    I'm running a Windows 2008 VPS with 2GB RAM. I'm trying to install hMailServer on the VPS but when I get to the "choose installation directory" dialog I get error messages that keep popping up and make it so that I cannot continue. As soon as the dialog opens I get these two errors: "Access violation at address 73F53560. Read of addresss 00000014." "Access violation at address 73EEBE21. Read of addresss 00000018." Once I close these it frees up again but as soon as I click "Browse.." (to choose the directory) I get the following errors repeatedly that reopen if I close them. "Access violation at address 73F0E371. Read of address 00000014." "Access violation at address 73F4A006. Read of address 00000000." I have no idea how to fix these. I can't run memory diagnostics, I assume because it's a VPS and not an actual server.

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  • Win7 Aero disabled due to mirror drivers following TightVNC use, cannot re-enable

    - by me_and
    I recently installed TightVNC, and used it to access my desktop from my phone. When I did so, my desktop reported that Aero had been disabled due to an application being run that didn't support it. I now cannot re-enable Aero, despite having closed the TightVNC server (and indeed having rebooted a number of times since). Windows 7 troubleshooting reports the following: Close programs using mirror drivers To allow Aero effects to be displayed, close any programs that use mirror drivers (a type of display driver), such as Windows Remote Assistance and Windows Live Mesh. The troubleshooting system appears to attempt to automatically fix that, but fails. I can see nothing in the task manager that obviously uses mirror drivers; in particular, I can see nothing that looks like TightVNC in there. Starting and exiting TightVNC makes no difference. Google has turned up nothing that looks useful so far, either, although my Google-fu isn't great and I may just be searching for the wrong things. There's another question that reports the same problem, caused by LogMeIn rather than TightVNC, but the solution listed there doesn't work—TightVNC doesn't install LogMeIn mirror drivers, for obvious reasons.

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  • Windows XP consuming drive letters

    - by billdehaan
    This one's a bit of a stumper. I'm running XP SP3, current with all fixes, etc. My problem is that I can assign a drive letter to a container file (explained below), it works just fine. But once I close the container, the drive letter is no longer available until the next boot. I've got some confidential data that I've placed in a container volume. I've used TrueCrypt (www.truecrypt.com) and FreeOTFE (www.freeotfe.org), with both installed and portable versions for both, with the same result. I open the container file, assign it to a drive letter (say R:), and run some portable apps that are within the volume. When I'm done, I close the container, and the drive letter is released. Fine so far. However, when I attempt to re-open it, the previous drive letter (in this case R:) is no longer available. It's not mapped to anything, it's just unavailable. Even attempting something like "subst R: C:\" returns "Invalid Parameter - R:". I can use the S: drive, no problem, but the next day I have to use T:, then U:, etc. Eventually, I have to reboot to reclaim all of of the drive letters. Unfortunately, everything I've read about drive letters relates to USB assignments, which doesn't apply here. I've tried the "show hidden" command (set devmgr_show_nonpresent_devices=1) with no success. And the Disk Management tool doesn't apply either, since it's not a physical drive. Does anyone know where Windows keeps the list of drive letters? And is there anything short of a reboot that can be used to reset it?

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  • Apache2 process stuck at 100% cpu, CLOSE_WAIT socket lingering

    - by mmazing
    I've troubleshooted the heck out of this today, and I can't seem to find any information on how to determine what is happening exactly. Basically, on my development server, another developer is causing CLOSE_WAIT connections that eat up one or more apache2 processes for several hours if I don't restart apache2. strace on any of the processes yields no information, only that it was able to attach. mod_proxy is not enabled. KeepAlive is on, KeepAliveTimeout is 15 seconds, MaxKeepAliveRequests is 100. From what I've been reading, this may or may not be an apache issue at all, just that that's how CLOSE_WAIT works (the server is waiting for a FIN packet to close the connection). I just can't believe that a server would be crippled so easily by not receiving a packet from a remote host telling it to close the connection. Especially without any intervention for well over an hour. Any tips? I'm about to pull my hair out. Edit : Also, there are no unusual entries in any apache log files. Edit 2: lsof -i shows only a single CLOSE_WAIT per hanging process. (That's what has been bothering me about this, as most other discussions talk about many CLOSE_WAIT connections, while I only have one per process.) The nature of the code that is running (php) doesn't really lend itself to closing open connections and whatnot. I can run the same code that he is executing with the same session data, and not result in a hanging process.

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  • Changing dual-monitor settings without closing the laptop lid on OS X

    - by hekevintran
    I have a Unibody MacBook hooked up to an external display. By default when I boot up, the system will go to dual-monitor mode. I want to use only the external display. The Apple supplied solution to this problem is to close the lid of the laptop which puts the machine into sleep mode and then move the mouse around to wake it up again. Because the machine is being woken up with the lid closed, when the displays are detected the system finds only the external. After the system is functional again, you can open the lid if you want and the laptop screen will be non-functional until you either tell the system to detect displays from the system preferences or you turn off the external display. Every time I want to use only the external display, I must reach my hand over to close the lid, wait for the machine to sleep, jigger the mouse, wait for the machine to wake up, and finally open the lid again because I don't want the machine to overheat. I feel that this is very stupid to have to do. Why is there no button or menu option that says "don't use this screen"? Is there any third-party software way to change the screen setup that does not involve physically closing the lid and playing a game of "are you sleeping" in order to switch such a simple software setting? We are in the 21st Century and honestly this is childish.

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  • Tomcat performing terribly for no apparent reason

    - by John
    We're running a game application .WAR on Tomcat 6 on an Amazon EC2 server, 8 core processor, 7gb RAM. The application uses a MySQL database hosted on Amazon RDS. This Facebook application takes ages to access when a mere 20-30 users are playing it. Big difference from 1-2 users. The entire .WAR is ~4mb, all static content hosted elsewhere. The server has never been close to running out of RAM. The CPU utilization has never been higher than 13.5-14%. Even with ~500 users that completely slowed everything to a standstill. The thread count or threadpools isn't close to being maxed out. I heightened maxthreads but it didn't make a noticeable difference. My theory is that Tomcat can only use one processor core, which would explain why it was slowed to a halt even though CPU usage was stably at 13-14% at the activity spike. But I'm struggling to understand why it would only use one CPU core. There is no processor cap in server.xml. The app contains several servlets (4 or 5). There is no mention of SingleThreadModel in the Java code. WHAT could be causing the application to run extremely slowly? If there is only 1-5 people on the application it runs fine. With 20-30 people it's barely contactable.

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  • Menu command stuck on screen

    - by 280Z28
    For some reason, periodically when I select a menu command, the command label gets "stuck" on the screen and won't go away. I can close all open applications, including whichever one I was using when it got stuck, but it still won't go away. In the screenshot below, I opened an new instance of IE just to show how the label stays on top. The label was not created by this instance of IE. Edit with the source: The label that gets stuck is the first menu command I select in IE. If a label is already stuck, a new one does not get stuck (regardless of which instance(s) of IE are involved). Based on this knowledge, I now just open IE on my secondary monitor, carefully open the context menu so the Properties command is in the bottom corner, and click it. This is not a solution... The label never moves and is transparent to mouse input (if I click it, it's as if I clicked the item behind it). The label does not go away if I close all running applications. I haven't tried stopping services or closing system tray items like Live Mesh. The label does go away if I change the screen resolution and then change it back. Any ideas how I can stop this from happening? It's happened a half dozen times since yesterday and it's becoming quite disrupting to my work. Obviously I added the circle in MS Paint. That part isn't stuck. ;)

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  • Mysql, SSL and java client problem

    - by CarlosH
    I'm trying to connect to an SSL-enabled mysql server from my own java application. After setting up ssl on mysqld, and successfuly tested an account using "REQUIRE ISSUER and SUBJECT", I wanted to use that account in a java app. I've generated a private key (to a file called keystore.jks) and csr using keytool, and signed the csr using my own CA(The same used with mysqld and its certificate). Once signed the csr, I've imported the CA and client cert into the keystore.jks file. When running the application the SSL connection can't be established. Relevant logs: ... [Raw read]: length = 5 0000: 16 00 00 02 FF ..... main, handling exception: javax.net.ssl.SSLException: Unsupported record version Unknown-0.0 main, SEND TLSv1 ALERT: fatal, description = unexpected_message Padded plaintext before ENCRYPTION: len = 32 0000: 02 0A BE 0F AD 64 0E 9A 32 3B FE 76 EF 40 A4 C9 .....d..2;.v.@.. 0010: B4 A7 F3 25 E7 E5 09 09 09 09 09 09 09 09 09 09 ...%............ main, WRITE: TLSv1 Alert, length = 32 [Raw write]: length = 37 0000: 15 03 01 00 20 AB 41 9E 37 F4 B8 44 A7 FD 91 B1 .... .A.7..D.... 0010: 75 5A 42 C6 70 BF D4 DC EC 83 01 0C CF 64 C7 36 uZB.p........d.6 0020: 2F 69 EC D2 7F /i... main, called closeSocket() main, called close() main, called closeInternal(true) main, called close() main, called closeInternal(true) connection error com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Any idea why is this happening?

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  • litespeed issue with content-type

    - by sandeep.s85
    I am running magento with litespeed. The problem I am facing is that ajax call is being made of which header is set as x-json, but lightspeed is setting another header of text/html content type I've checked that page with apache and everything is working fine. I checked the response headers with apache and litespeed and here are they: With apache: HTTP/1.1 200 OK Date: Fri, 07 Sep 2012 05:58:47 GMT Server: Apache Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Set-Cookie: frontend=164b21c64808a05e806027bdbd4d745d; expires=Fri, 07-Sep-2012 06:58:48 GMT; path=/; domain=mydomain.com; httponly Connection: close Transfer-Encoding: chunked Content-Type: application/x-json With litespeed: HTTP/1.1 200 OK Date: Fri, 07 Sep 2012 06:10:55 GMT Server: LiteSpeed Connection: close Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Set-Cookie: frontend=164b21c64808a05e806027bdbd4d745d; expires=Fri, 07-Sep-2012 07:10:55 GMT; path=/; domain=mydomain.com; httponly Content-Type: text/html; charset=UTF-8 Content-Length: 474 Vary: User-Agent I've also added application/json to mime.properties of litespeed,restarted it but that did not work. Here is the screenshot

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  • Handle Sysinternals software does not accept -c parameter

    - by Alex
    I am trying to close a handle to a locked file in Windows, using Sysinternals Handle software (http://technet.microsoft.com/en-us/sysinternals/bb896655). First I search for opened handle: handle.exe "C:\Temp" It issues me the following: Far.exe pid: 1144 type: File 2E8: C:\Temp Far.exe pid: 1144 type: File 3A8: C:\Temp Next I run handle.exe with -c parameter. However, whichever number I enter, it does not do anything. I have tried both: 1144, 2E8, 3A8 and 1144 in hex (478) as the software help says it accepts PID in hexademic. Whatever I enter, it just issues the following: Handle v3.46 Copyright (C) 1997-2011 Mark Russinovich Sysinternals - www.sysinternals.com usage: handle [[-a [-l]] [-u] | [-c <handle> [-y]] | [-s]] [-p <process>|<pid>] [name] -a Dump all handle information. -l Just show pagefile-backed section handles. -c Closes the specified handle (interpreted as a hexadecimal number). You must specify the process by its PID. WARNING: Closing handles can cause application or system instability. -y Don't prompt for close handle confirmation. -s Print count of each type of handle open. -u Show the owning user name when searching for handles. -p Dump handles belonging to process (partial name accepted). name Search for handles to objects with <name> (fragment accepted). No arguments will dump all file references. What am I doing wrong?

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  • Windows XP laptop doesn't appear in WSUS All computers list

    - by George
    I have this one laptop that doesn't appear in WSUS all computers list. We have about 23-25 PCs/laptops/servers in the network, all, but one are listed in WSUS. This is what I have done so far: 1) Changing Updates on local PC: Go to your Windows XP client and start a new Microsoft Management Console (MMC). At Start, Run, type MMC. Use Ctrl+M to add a new snap-in. Click Add, and then add the Group Policy Object Editor for the Local Computer. Click Close, and then click OK. Expand the Local Computer Policy. Under Computer Configuration, go to Administrative Templates, Windows Components, Windows Update. In the right-hand pane, double-click Specify intranet Microsoft update service location. Configure the settings to reflect my WSUS server. Click OK and then close the MMC without saving it. executed wuauclt.exe /detectnow 2) Edited registry key to be pushed to the PCs using GPO [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate] "WUServer"=http://wsusserver "TargetGroupEnabled"=dword:00000001 "TargetGroup"="WINXP" "WUStatusServer"=http://wsuswerver 3) executed wuauclt /resetauthorization /detectnow 4)Synchronised and refreshed the group I am running out of ideas here. The client is running Windows XP pro, WSUS version is 3.0 and is running on Windows 2008 R2 64-bit. Please, help! Thanks! EDIT 13.IX.2012 @ 15.40 I should have also mentioned that we do have a Windows Update GPO for workstations group and that laptop is a part of that group.

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  • Outlook, Word, and normal.dot (2003 Edition)

    - by mosiac
    I have one user that for some reason has been having macro issues with her normal.dot file. At first the fix was just remove the file because she isn't actually needing to save anything. This was really a temp fix. We found out that for some reason every time she opened up word it was trying to modify normal.dot but not asking. I set it up to ask so at least we could control the changes going on to normal.dot. There was one file disabled in Word that we enabled because it was a document she never used anymore, making us think that maybe that was the issue. We have automatic antivirus updates and scans so there is little chance of a virus. The issue has stopped as far as just using Word itself. She can open, close, edit, save, etc and never get the dialog. In Outlook however if she clicks reply or forward to an e-mail but decides not to send it, and just close it. She gets the pop up to save changes to normal.dot. This leads me to believe something in outlook about how she is setup to use Word as an e-mail editor is causing the problem. Am I even on the right track here? Short form: Word works fine with normal.dot, as an Outlook mail editor wants to change normal.dot. No idea what to do.

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  • Recommendations for colocation in the US

    - by Emil
    Hello serverfault I work for a European media company and we are currently looking for colocation in the US. I know the European market quite well unfortunately that is not the case for the US. I'm hoping for you guys to help me out a bit with a few questions, it would be much appreciated! I am looking for a data center that can deliver a high level of availability (tier 3 or better). The installation will be fairly large so capacity is important. Good internet connectivity/carrier presence. However most important is good customer support, skilled dedicated and responsive technical staff, since we won't have tech staff close by. I'm looking for a small and fast moving company that target internet businesses rather than big old enterprise hosting. What locations should we go for given that we want to reach all of the US from a single site and still maintain decent latency? (do we need east and west coast?) Where are the main internet hubs and should you try and get as close as possible? Are there any good online resources I should look at? Where do the large scale internet/media services colocate? Lastly I would be very happy to get some actual recommendations for companies to talk to P.S I'm happy to return the favor if anyone has question regarding data centers and colocation in Europe.

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  • linux Firewall question

    - by bcrawl
    I have few generic questions about firewalls and I thought the community up here could help me out. 1) So I recently installed Ubuntu server barebones. I checked for open ports, none were open which was great. Is that because there was a firewall installed or was it because there were no applications installed? 2) I installed some applications, (Apache, postgres,ssh, Java app and some few). Between these, I ended up opening a few ports (~10). Now I have a list of all the ports I would need open. So, how do I go about protecting them? [Is this the right question to ask? does the process go like this, Install Firewall - Allow Said needed ports - deny rest using IPtables rules] This is going to be open to the internet. Hosting low traffic ecommerce sites. 3) What do you think is the easiest way for me to quasi-secure the server, [low maintenance overhead/simplicity. Any open source "software" which can make my life easier?] 4) Finally, of the said open ports [2], I have 2 ports I need to close because they are telnet ports. Can I close these ports without installing a "firewall" Thanks all for the help and Merry Christmas!!!!!!!

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  • Netbook thinks it is a desktop

    - by Narcolapser
    Question: Are, and if so what, there packages for download that I can get netbook to understand it is not a desktop and that it is a netbook. Info: I'm running an Acer Aspire One with ubuntu desktop 9.10. I tried Ubuntu Netbook Remix first but it has graphics issues with the aspire one. So I changed to Ubuntu Desktop. It was the only distro (after debian, centOS, Fedora, and Knoppix all failed me) that I managed to get working. The only thing is that it is having issues doing things that a netbook/laptop should be doing. most notably is that it will run it's battery dead if I close the screen and throw it into my back pack. It seems to just stay fully on and runs it's self to death. also it will lock up some times if I close the screen and come back to it 10 or 20 minutes later. It also won't retain volume settings when I reboot, as well as screen brightness. and just a couple of other things that I can't quite put my finger on, but just seem amiss. like I said, Essentially my netbook thinks it is a desktop, how can I fix this? ~N

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  • Recovering data from mangodb raw files

    - by Jin Chen
    we use mongodb for our database and set the replset(two servers), but we mistakenly deleted some raw files that under /path/to/dbdata on both servers, after we used tool to get back the deleted files(we ran the extundelete on both server and mix the result together), like database.1, database.2 etc. we could not start the mongod, it raised the following error when starting mongod or executing mongodump, here is the console output: root@mongod:/opt/mongodb# mongodump --repair --dbpath /opt/mongodb -d database_production Thu Aug 21 16:22:43.258 [tools] warning: repair is a work in progress Thu Aug 21 16:22:43.258 [tools] going to try and recover data from: database_production Thu Aug 21 16:22:43.262 [tools] Assertion failure isOk() src/mongo/db/pdfile.h 392 0xde1b01 0xda42fd 0x8ae325 0x8ac492 0x8bd8e0 0x8c1c51 0x80e345 0x80e607 0x80e6a4 0x6db92a 0x6dc1ff 0x6e0db9 0xd9e45e 0x6ccdc7 0x7f499d856ead 0x6ccc29 mongodump(_ZN5mongo15printStackTraceERSo+0x21) [0xde1b01] mongodump(_ZN5mongo12verifyFailedEPKcS1_j+0xfd) [0xda42fd] mongodump(_ZNK5mongo7Forward4nextERKNS_7DiskLocE+0x1a5) [0x8ae325] mongodump(_ZN5mongo11BasicCursor7advanceEv+0x82) [0x8ac492] mongodump(_ZN5mongo8Database19clearTmpCollectionsEv+0x160) [0x8bd8e0] mongodump(_ZN5mongo14DatabaseHolder11getOrCreateERKSsS2_Rb+0x7b1) [0x8c1c51] mongodump(_ZN5mongo6Client7Context11_finishInitEv+0x65) [0x80e345] mongodump(_ZN5mongo6Client7ContextC1ERKSsS3_b+0x87) [0x80e607] mongodump(ZN5mongo6Client12WriteContextC1ERKSsS3+0x54) [0x80e6a4] mongodump(_ZN4Dump7_repairESs+0x3a) [0x6db92a] mongodump(_ZN4Dump6repairEv+0x2df) [0x6dc1ff] mongodump(_ZN4Dump3runEv+0x1b9) [0x6e0db9] mongodump(_ZN5mongo4Tool4mainEiPPc+0x13de) [0xd9e45e] mongodump(main+0x37) [0x6ccdc7] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f499d856ead] mongodump(__gxx_personality_v0+0x471) [0x6ccc29] assertion: 0 assertion src/mongo/db/pdfile.h:392 Thu Aug 21 16:22:43.271 dbexit: Thu Aug 21 16:22:43.271 [tools] shutdown: going to close listening sockets... Thu Aug 21 16:22:43.271 [tools] shutdown: going to flush diaglog... Thu Aug 21 16:22:43.271 [tools] shutdown: going to close sockets... Thu Aug 21 16:22:43.272 [tools] shutdown: waiting for fs preallocator... Thu Aug 21 16:22:43.272 [tools] shutdown: closing all files... Thu Aug 21 16:22:43.273 [tools] closeAllFiles() finished Thu Aug 21 16:22:43.273 [tools] shutdown: removing fs lock... Thu Aug 21 16:22:43.273 dbexit: really exiting now my env: 1) Debian 3.2.35-2 x86_64(it's a XEN virtual machine) 2) mongodb 2.4.6 and we did not delete the .0 and .ns files we tried to create a new database with the same name and copy these db.ns and db.2, db.3 to the new db, we still met the same error. is there any way to check the valid of raw .ns and datafiles, and how to recover the database?

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  • Adobe premiere CS5 problem with the display driver

    - by user30179
    This error is really hindering our project. I get an error, it started showing-up June 16th 2010. There are no windows updates at the on the same date as the error, other than (Windows Defender) Seems to happen when working with Image overlays. ERROR: "The NVIDIA OpenGL driver detected a problem with the display driver and is unable to continue. The application must close." We opened the side of the case in the possibility there is an over heating problem. Nvidia Driver ver 8.16.11.9175 (nVidia Quadro FX 1700) I am running: Windows 7 x64 Adobe premiere CS5 Production nVidia Quadro FX 1700 (MRGA14L) 4 Gig ram RAID 10 2 750GB drives Duo core 3.0 6MB L2 Cache This is at least three other people that have come across this error: NVidia Forum EVGA Forum NVidia Forum UPDATE: Having the case open did not help. I also installed New Nvidia drivers now I get a different error: *ERROR:*Your hardware configuration does not meet minimum specifications needed to run the application. The application must close. I ran Windows Update and installed all four updates so now I am waiting to see if the error occurs again. Anything beyond this I am out of options.

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  • File in use when it's really not

    - by C-dizzle
    I am running Windows 7 Professional 32 bit on a Server 2008 network. I am getting a weird issue with an excel document where I open it up one morning, update it, save and close, the next morning I come in, open it up and it says "This file is in use and locked by csmith" which "csmith" is me! So I click on the cancel button, open it up again and it comes up fine. I can edit, save and close with no problem. But then have the same issue the next morning. Another weird thing is that we have a calendar shared in "Public Folders" under Outlook that seems to be having the same issue, which happens to be a calendar made in Excel. Exchange 2010 is installed on the server and the clients are using Exchange 2007. In the instance with the calendar, it will show conflicting edits have been made and you must keep one item or all items. And it shows an edit date of 4/24/2012 and 6/1/2012. But, there were NO edits done on 6/1, just tried opening it. This problem does not occur under my profile, but 2 others. These machines are ALSO running Windows 7 Professional 32 bit. We have a mix of Windows 7 and Windows XP machines on our network if that is any help. These issues did not start happening until we migrated from a server running Server 2003 and Exchange 2000, which the new server is running Server 2008 and Exchange 2010 as stated above. Is there something on the server side that is configured wrong?

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  • Fedora 12 on Vmware network disabled on restore

    - by Chaitanya
    I have a fedora 12 guest running on VMWare on windows 7. I use it mainly for the occasional linux dev. Whenever I restart the guest, networking works fine. But if I close the VMware player and save state, the next time I start the image, networking is disabled (red x on the network icon. message saying networking disabled). I can't seem to find a way to restore networking. I have to reboot the guest to get my network access back again. My Ubuntu image doesn't have this problem. I can close the player and when I re run the image, I can pick up where I left off, with all the open firefox windows and application windows as I left them. Fedora saves state, but doesn't seem to enable networking. There is a relevant warning I have seen "SELinux is preventing /sbin/ifconfig "read" access to/var/run/vmware-active-nics." But I am not sure how to solve it. I know fedora isn't officially supported by VMware, but it seems to be working fine for the most part and meeting my needs, except for this one little issue. Any help would be much appreciated.

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  • ddclient to update namecheap subdomain?

    - by LF4
    I have a subdomain that I want to update with ddclient. I configured the ddclient to get the IP from dyndns but it's not updating the subdomain on namecheap. They said to use yourdomain.com as the login instead of my actual domain. Has anyone been able to get namecheap DNS updated with ddclient? I'm running CentOS 6.2 with ddclient 3.7.3. When I run ddclient I get the following. CONNECT: checkip.dyndns.org CONNECTED: using HTTP SENDING: GET / HTTP/1.0 SENDING: Host: checkip.dyndns.org SENDING: User-Agent: ddclient/3.7.3 SENDING: Connection: close SENDING: RECEIVE: HTTP/1.1 200 OK RECEIVE: Content-Type: text/html RECEIVE: Server: DynDNS-CheckIP/1.0 RECEIVE: Connection: close RECEIVE: Cache-Control: no-cache RECEIVE: Pragma: no-cache RECEIVE: Content-Length: 106 RECEIVE: RECEIVE: <html><head><title>Current IP Check</title></head><body>Current IP Address: IPADD</body></html> Use of uninitialized value in string ne at /usr/sbin/ddclient line 1998. WARNING: skipping update of lf4bot from <nothing> to IPADD WARNING: last updated <never> but last attempt on Fri Jun 15 22:46:21 2012 failed. WARNING: Wait at least 5 minutes between update attempts. ddclient.conf File daemon=300 # check every 300 seconds syslog=yes # log update msgs to syslog mail=root # mail all msgs to root mail-failure=root # mail failed update msgs to root pid=/var/run/ddclient.pid # record PID in file. ssl=yes # use ssl-support. Works with use=web, web=checkip.dyndns.org/, web-skip='IP Address' # found after IP Address protocol=namecheap \ server=dynamicdns.park-your-domain.com \ login=yourdomain.com \ password=PASSWORD \ lf4bot

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  • Excel chart with year-to-year comparison

    - by Craig
    Given this data: Date Year Month Usage (Kw-h) Cost/Month 02/19/08 2008 2 501 59.13 03/18/08 2008 3 404 48.49 04/16/08 2008 4 387 45.67 05/22/08 2008 5 319 37.85 06/23/08 2008 6 363 43.81 07/23/08 2008 7 372 48.86 08/21/08 2008 8 435 59.74 09/23/08 2008 9 358 49.9 10/16/08 2008 10 313 42.01 11/20/08 2008 11 328 39.99 12/16/08 2008 12 374 44.7 01/20/09 2009 1 474 55.35 02/19/09 2009 2 444 52.85 03/19/09 2009 3 398 49.25 04/17/09 2009 4 403 51.05 05/19/09 2009 5 405 49.61 06/18/09 2009 6 373 45.18 07/20/09 2009 7 337 44.67 08/18/09 2009 8 369 50.73 09/17/09 2009 9 377 52.36 10/16/09 2009 10 309 43.4 11/17/09 2009 11 249 34.14 12/16/09 2009 12 327 41.79 01/20/10 2010 1 356 45.66 I would like to produce a report that displays a Usage (Kw-h) line for each year. Features: Y axis: Usage (Kw-h) X axis: Month Line 0..n: lines representing each year's monthly Usage (Kw-h) Bonus points: instead of a line for each year, each month would have a high-low-close (HLC) bar; 'close' would be replaced by the average second Y axis and HLC bar that represents cost/month Questions: Can this be done without a Pivot table? Do I need to have the Year and Month column or can Excel automatically determine this? Current chart:

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  • Cisco Configuration backup with Windows Script.

    - by Jeff
    We have a client with a lot of Cisco Devices and we would like to automate the backups of these devices through telnet. We have both 2003 and 2008 servers and ideally use tftp to back it up. I wrote this: Set WshShell = WScript.CreateObject("WScript.Shell") Dim fso Set fso = CreateObject("Scripting.FileSystemObject") Dim ciscoList ciscoList = "D:\Scripts\SwitchList.txt" Set theSwitchList = fso.OpenTextFile(ciscoList, 1) Do While theSwitchList.AtEndOfStream <> True cisco = theSwitchList.ReadLine Run "cmd.exe" SendKeys "telnet " SendKeys cisco SendKeys "{ENTER}" SendKeys "USERNAME" SendKeys "{ENTER}" SendKeys "PASSWORD" SendKeys "{ENTER}" SendKeys "en" SendKeys "{ENTER}" SendKeys "PASSWORD" SendKeys "{ENTER}" SendKeys "copy startup-config tftp{ENTER}" SendKeys "(TFTP IP){ENTER}" SendKeys "FileName.txt{ENTER}" SendKeys "exit{ENTER}" 'close telnet session' SendKeys "{ENTER}" 'get command prompt back SendKeys "{ENTER}" SendKeys "exit{ENTER}" 'close cmd.exe On Error Resume Next WScript.Sleep 3000 Loop Sub SendKeys(s) WshShell.SendKeys s WScript.Sleep 300 End Sub Sub Run(command) WshShell.Run command WScript.Sleep 100 WshShell.AppActivate command WScript.Sleep 300 End Sub But the problem with this is the sendkeys are sent to the console session, I'm trying to find a solution that would not require a user to be logged in. Does anyone have any ideas? I have some knowlage of VBS, PowerShell and a pretty good grasp on batching.

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