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• Virus on site but can't find where

  - by Rob

  WARNING! THIS IS ABOUT A VIRUS ON MY SITE. IT APPEARS IT HAS BEEN THERE FOR SOMETIME AND I'VE HAD NO PROBLEMS. BUT PLEASE BE CAREFUL. READ EVERYTHING I SAY AND SEE IF YOU CAN HELP ME WITHOUT VISITING THE LINK. AVG PICKS UP ON IT AND BLOCKS IT, MCAFEE DOES NOT. Sorry about the warning, obviously i'm not here to get anyone infected or anything like that. Basically I run the website sortitoutsi dot net. Ages ago I got a virus on my computer, they got hold of my FTP passwords and added some lines of javascript to the top of my site. I removed them and believe it was fixed. However i'm using the "Web Developer" extension for Firefox and chose to view all javascript on my page and find there are various links to horrible urls such as: gittigidiyor-com.excite.co.jp.webmasterworld-com.eastmusicdirect.ru:8080/aboutus.org/aboutus.org/google.com/skycn.com/torrents.ru.php and gittigidiyor-com.excite.co.jp.webmasterworld-com.eastmusicdirect.ru:8080/index.php?jl= These terms do not appear anywhere. In the source code, in any of the javascript or the css. I also can't see that there are any rogue images that I don't recognise either. So i've no idea where this javascript is coming from. Can anyone suggest how I can find references to these links and remove them? I can see them both in the Web Developer firefox extension and in the net tab using Firebug. Any help would be greatly appreciated

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• Dovecot (on Mac OS X Server 3 - Mavericks) giving “Error: Failed to autocreate mailbox INBOX: Permission denied”

  - by user2965240

  I recently upgraded my server to Mavericks and I thought everything had gone perfectly. As it turns out, that was not exactly the case. After everything working fine for a week or so, I created a new user and my mail server flat out stopped working. Most frustratingly, there were no log errors (in any of the many mail logs) which shed any light on the cause. After much trial and error, I finally got my mail server functioning (partially) by reinstalling server and restoring the mail folder from the previous day's backup (yay for backups). However, as is often the case, there were MANY permission issues. After slogging through various permission problems, I believe that my system is now receiving mail, however none of my users can check it because every time someone attempts to login the server generates following error: Error: Failed to autocreate mailbox INBOX: Permission denied I would assume that this is yet another permissions problem, however after much searching, I still cannot resolve this. To be clear, I don't want Dovecot to autocreate any mailboxes at this point because all of the mailboxes should exist. Any help on this would be sooooooo greatly appreciated. P.S. On a side note: why is it that repairing permissions never takes care of difficult issues like these? That would be awfully helpful...

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• "Server Unavailable" and removed permissions on .NET sites after Windows Update

  - by tags2k

  Our company has five almost identical Windows 2003 servers with the same host, and all but one performed an automatic Windows Update last night without issue. The one that had problems, of course, was the one which hosts the majority of our sites. What the update appeared to do was cause the NETWORK user to stop having access to the .NET Framework 2.0 files, as the event log was complaining about not being able to open System.Web. This resulted in every .NET site on the server returning "Server Unavailable" as the App Domains failed to be initialise. I ran aspnet_regiis which didn't appear to fix the problem, so I ran FileMon which revealed that nobody but the Administrators group had access to any files in any of the website folders! After resetting the permissions, things appear to be fine. I was wondering if anyone had an idea of what could have caused this to go wrong? As I say, the four other servers updated without a problem. Are there any known issues involved with any of the following updates? My major suspect at the moment is the 3.5 update as all of the sites on the server are running in 3.5. Windows Server 2003 Update Rollup for ActiveX Killbits for Windows Server 2003 (KB960715) Windows Server 2003 Security Update for Internet Explorer 7 for Windows Server 2003 (KB960714) Windows Server 2003 Microsoft .NET Framework 3.5 Family Update (KB959209) x86 Windows Server 2003 Security Update for Windows Server 2003 (KB958687) Thanks for any light you can shed on this.

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• Upstart multiple instances of service not working

  - by Dax

  I started playing with MongoDB on Lucid. Now I would like to run a DB and Config server on the same box. They both use the same binary to launch, but with different config files and running on different ports. All directories for log and lib is split so one goes to mongodb and the other to mongoconf. Each process can be started without any problems on their own. start mongodb stop mongodb start mongoconf stop mongoconf But if I try to start both, the second one would just start and exit. Using 'initctl log-priority debug' I got the following in the logs. Jan 6 12:44:12 mongo4 init: event_finished: Finished started event Jan 6 12:44:12 mongo4 init: job_process_handler: Ignored event 1 (1) for process 5690 Jan 6 12:44:12 mongo4 init: mongoconf (mongoconf) main process (5690) terminated with status 1 Jan 6 12:44:12 mongo4 init: mongoconf (mongoconf) goal changed from start to stop Jan 6 12:44:12 mongo4 init: mongoconf (mongoconf) state changed from running to stopping man 5 init shows that you can use instance names to differentiate the two. I tried using 'instance mongoconf' in the on upstart script and 'instance mongodb' in the other one, and it still fails. I can manually start the other process, so there is definitely no conflicts on port numbers or directories. Any ideas on what to try or how to get output on why it is 'terminated with status 1'? Thanx

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• Debugging Windows PC freeze

  - by Violet Giraffe

  I have a problem with my computer, would appreciate any hints/ideas. It usually begins not immediately after booting Windows, but at some unpredictable point in time, which doesn't seem to correlate with any specific actions of mine. First sign of a problem is process System starting to consume 25% CPU time steadily. I have a quad-core CPU, so it might be one thread working non-stop. At this point micro-freezes start to occur - screen stops refreshing, but if I have, say, music player running - it continues playing. If I try to do something between the freezes, like open Start menu, it will freeze completely and forever. If I press reset button the PC will shut down and then start cold, as opposed to usual reset behavior (which doesn't include PC shutting down). I have noticed that full restart upon reset is usual for hardware problems, but I think this problem isn't related to at least motherboard-CPU-RAM-videoadapter. It certainly isn't caused by overheating. One very important not is that it seems to be related to Windows hosted WLAN network: I have USB Wi-Fi dongle and have configured a hosted network to share cable Internet connection with Wi-Fi devices. I am not 100% certain there's a strong connection, but in 9 or 10 cases when I enabled the network (by executing netsh wlan start hostednetwork), it did freeze eventually (sometimes within minutes of starting the network, sometimes within hours), and on at least 10 days when I didn't start the network it never froze, no matter how I used the computer). There are no critical/error entries in the events log that I can suspect as being related, only regular stuff like "driver not loaded". I have found no critical/error events that are being logged around the time of freeze occurring and are not logged during normal boot without starting the WLAN.

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• Avoid "privacy pitfalls" in Windows and Linux?

  - by Somebody still uses you MS-DOS

  I have a Windows and a Linux machine. In Windows, everytime I visit a site, a lot of cache/history files are created on my machine. I setup my Firefox to don't save anything. ...but Windows saves a lot of "temp" files, some strange files I opened in registry (like video names). Each video I open in VLC is shown in "Last shown videos". In windows, all files opened can be found at "Recent opened files" as well. A lot of these privacy configurations can be tweaked (VLC and "Recent opened files" in Windows) - it's a PITA doing it individually, but it's possible - but there isn't a guide to these "internal" privacy traces that are left on Windows installation. In Linux, I just know there are these problems in app level (like VLC). My question is: is there a complete guide to avoid undesirable traces of what I did/watch/used in my Windows machine? (Delete everytime the PC is restarted, or even avoiding recording these info at all) Is there a website with configuration guides to different types of software? I would like to know about Linux privacy pitfalls as well.

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• Where is my problem? The P6X58D Premium Mobo, Windows 7, or other?

  - by Dylan Yaga

  I was having problems with my USB devices for an hour last night, and I am unable to determine the root cause of the problem. The two symptoms are: At seemingly random times (not consistently spaced by time or caused by any detectable event) my USB devices become "detached". Windows will play the USB disconnect sound and then the reconnect sound. The devices disconnected and then reconnected. My USB Keyboard will "stick" on one key for several seconds before processing any other keystroke made. The mouse also does not respond to clicks. I do not lose mouse movement or USB device connectivity. And after a moment of this several beeps will be emitted from the speakers. Hardware Specs: GFX Card: EVGA GeForce GTX 470 Superclocked 1280MB DDR5 PCIe Motherboard: ASUS P6X58D Premium Intel X58 Socket LGA1366 MB Processor: Intel Core i7-920 2.66Ghz 8M LGA1366 CPU Memory: Corsair Dominator 6144MB PC12800 DDR3 Storage: Hitachi 1TB Serial ATA HD 1600MHz 7200/32MB/SATA-3G Cooling: Corsair Hydro H50 CPU Liquid Cooler Case: Corsair Obsidian 800D Full Tower Case Power Supply: Corsair HX1000W 1000W Modular Power Supply Steps I have taken to narrow down the problem: Restarted the computer. - No change Changed USB port the Hub was connected to on the CPU. - No change Removed all devices from USB Hub and connected directly to CPU. - No change Used a different USB keyboard both in USB Hub and directly to CPU. - No change Disconnected and reconnected all cables. - No change Disassembled the Tower and determined if the USB headers were firmly connected. - No change Checked device manager for errors. Checked all USB devices. - Nothing flagged After an hour of frustration trying to narrow down the problem it appeared to disappear. But I am torn between it being a Mobo problem or an OS problem. Is there anything else I can do to narrow down the problem before a reformat and then eventually exchanging the Mobo?

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• Juniper SSG 5 VPN

  - by Ethabelle

  I have a host who set up our Juniper SSG 5 VPN with Firmware version-6.2.0r5.0 I've been trying to set up VPN on it using this guide: http://kb.juniper.net/InfoCenter/index?page=content&id=KB4094 I've followed the steps and on my Mac, whenever I try to connect using L2TP over IPSec I get the following error; Summary of Steps: Create User (give them L2TP auth ability), Create Group, Place User in Group, Create VPN Gateway, Create VPN, create IP Pool, change default L2TP settings, create Untrust Trust Policy. The L2TP-VPN server did not respond. Try reconnecting. If the problem continues, verify your settings and contact your Administrator. I looked in my Firewall's logs, but I don't even see anything under Reports Logs Events. I'm.. obviously missing something, I just don't know what I'm missing at this point. I'm just starting networking and this is sort of Step 101 and I'm getting annoyed and just want to throw up OpenVPN, but I've read that has problems with Juniper Firewalls. Hooray.

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• Running python script in incrontab in Debian

  - by WilliamMayor

  I have a user, dropbox, that runs the Dropbox daemon, I want to monitor the directories in the Dropbox directory for new files and run a python script when they appear. I have the python script that I know works: $ /home/dropbox/monitor.py Trying to get lock Got lock, waiting for Dropbox to be idle Dropbox idle Finding instructions Done, releasing lock I have an incrontab entry: $ incrontab -l /home/dropbox/Dropbox IN_CREATE /home/dropbox/monitor.py | logger /home/dropbox/test IN_CREATE logger "$$ $@ $# $% $&" When I add a file to the test directory I see the output in /var/log/syslog: $ touch /home/dropbox/test/a $ tail /var/log/syslog ... Nov 9 10:18:27 vps incrond[1354]: (dropbox) CMD (logger "$ /home/dropbox/test a IN_CREATE 256") Nov 9 10:18:27 vps logger: "$ /home/dropbox/test a IN_CREATE 256" ... However, when I add a file to the Dropbox directory the command doesn't seem to run: $ touch /home/dropbox/Dropbox/a $ tail /var/log/syslog ... Nov 9 10:24:16 vps incrond[1354]: (dropbox) CMD (/home/dropbox/monitor.py | logger) ... So the incron daemon notices the new file and the correct command is found to be executed but it never actually gets executed. Nor are there any error messages. It kind of seems like incrontab can only be used to run the most simple of commands. This might be a similar question to: Incrond running but not executing commands CentOS 6.4 but I think that I don't have env problems, every path is absolute. I tried changing .../monitor.py to /usr/bin/python2.7 .../monitor.py just in case but it didn't make any difference.

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• Getting rid of your server in a small business environment

  - by andygeers

  In a small business environment, is it still necessary to have a central server? Speaking for my own company (a small charity with about 12 employees) we use our server (Windows Server 2003) for the following: Email via Microsoft Exchange Central storage Acting as a print server User authentication / Active Directory There are significant costs associated with running a server like this: Electricity, first for the server itself then for the air conditioning required (this thing pumps out a lot of heat) Noise (of which there is a lot) IT support bills (both Windows Server and Exchange are pretty complicated, and there are many ways they can go wrong) I've found ways to replace many of these functions with cheaper (better?) alternatives: Google Apps / GMail is a clear win for us: we have so many spam related problems it's not even funny, and Outlook is dog slow on our aging computers You can buy networked storage devices with built in print servers, such as the Netgear ReadyNAS™ RND4210 that would allow us to store/share all of our documents, and allow us to access printers over the network The only thing that I can't figure out how to do away with is the authentication side of things - it seems to me that if we got rid of our server, you'd essentially have a bunch of independent PCs that had no shared pool of user accounts / no central administrator. Is that right? Does that matter? Am I missing any other good reasons to keep a central server? Does anybody know of any good, cost-effective ways of achieving the same end but without the expensive central server?

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• MacBook Air i5 4 GB RAM shows screen tearing when scrolling in browsers

  - by Sandro Dzneladze

  I see screen tearing pretty often while scrolling webpages up and down, and it has been like this from day 1. But now I purchased an external monitor which is huge (23 inches compared to the Mac's 11), and the effect is more visible. It is driving me nuts and giving me headaches. I wonder if you see the same. I was reading a lot about this problem, and it seems to be present on MacBook Pros as well? Can someone confirm I'm not alone? In other words: I'm deciding weather to go through warranty repair, or if it makes no sense if all of theme exhibit same behavior. It is shame to see this beautiful machine with an insane price tag to be lagging when browsing web, when the processor is just sitting there idle at 4-12%! This is an example I found on Wikipedia that more or less describes what happens when I scroll up down. The effect is not so pronounced and clears when I stop scrolling, but it is sure annoying the hell out of me. Firefox is tearing like hell, Chrome less, Safari exhibits jagged scrolling but less tearing compared to Chrome and Firefox. With synthetic benchmarks I don't see any problems with hardware. But this is not particularly revealing.

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• System State Backup Retention Policies

  - by isoscelestriangle

  I was wondering if there was a general consensus on how long to keep system state backups. I am trying to reevaluate our current backup process, and trying to get a good handle on our current storage requirements. Our current setup involves tapes and sending backups offsite with Barracuda Networks. We have been doing our system state backups with Barracuda now, which does full backups daily, leaving our storage requirements growing quite quickly. My boss is a little too gung-ho with backups and wants our system states saved for quite a while. We currently have 5 days of nightlies, 5 weeklies, 3 monthlies, and so on. I think this is quite overkill for system state backups. My boss wants the ability to go back in time to find when an issue appeared, but I don't think that is practical. Many things change in the course of several months. I also think it would be hard not to notice problems with our DCs and other servers for several months. I would think that a previous week's snapshot and the current week's dailies would suffice. Any advice or reading you can point me to? Thanks!

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• Radeon 6950 - Garbling of text and graphics in certain Windows only

  - by Greg

  This morning I noticed the text in Gmail (in Firefox 4) looked a little funny (kind of thin, maybe some color fringing). I went to work and thought it might be some ClearType issue or something with the way Direct way that FF4 draws to the screen. When I came back from work (I left the computer on), the problem was much worse - way beyond ClearType nit-picking. The text was barely readable. I opened Chrome and there was no such problem. It seems like only Windows that use hardware acceleration are garbled, and ones that use GDI are not. But, I fired up Dragon Age and didn't notice any problems (I only really looked at the main menu though). Here is a link to a screen shot that illustrates the problem. Notice how the Windows Live Mesh window is completely unreadable, the text in Firefox 4 (left) is pretty bad, while Chrome, the Windows Control Panel, and the task bar are perfectly fine. The fact that the problem shows up in screen shots and that it only happens in certain Windows makes me confident that the problem cannot be with the monitor or DVI cable. I am using the AMD Radeon drivers from 4/27/11. The card I have (MSI Frozr II) came with a slight overclock (810Mhz) out of the box, but it looks like when I'm on the Windows desktop it's not running at full clock (CCC reports 450Mhz). Still, I underclocked it to the stock reference clock (800Mhz) and it made no difference. The idle temperature according to Afterburner is 42-44 Celsius, which seems a tad high but not enough to cause a problem - it's cold to the touch if I open up the machine. What the heck could be causing this? The problem varies in intensity. As we speak I'm in Firefox and things look better than they did earlier - it'll probably get worse again soon. Radeon 6950 (MSI Frozr II), Seasonic X 560, Core i5 2500K at stock clockspeeds, 16GB RAM, Asus P8P67 M Pro

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• Firefox proxy authentication with Kerberos: one service ticket per connection (Linux)

  - by Dari

  I am trying to enable proxy authentication via Kerberos for Firefox. The setup is: Active Directory domain (for LDAP and Kerberos; this works and I can log in the computer and get Kerberos tickets without problems) Microsoft Windows witness machine (on which Firefox runs fine with no ticket problem) CentOS 6.3 system with Firefox (the tests were performed with both the 10.0.1 ESR found in the CentOS package repositories and the 15.0.1 downloaded from Mozilla's website) BlueCoat proxy with Kerberos authentication enabled For the moment, Firefox requests an element of a website, gets an HTTP error code of "407 Proxy Authentication Required" from the proxy, gets a ticket granting service (TGS) from the domain for the proxy and performs the request again while passing the ticket. The transaction runs fine. However, when more elements are requested (in parallel), Firefox requests one more ticket per proxy connection. And this takes many DNS queries, Kerberos interactions with domain controllers and costs a lot of time (for example, the home page of Adobe takes several minutes to load and at the end, I have about 30 valid Kerberos tickets). I am stuck on this since a while, and help would be greatly appreciated. Minor information: the CentOS operating system is virtualized with VMware Player 3.1.3, but I do not think this would be a game changer.

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• SVN Authentication with LDAP and Active Directory

  - by Alex Holsgrove

  I am having a few problems getting SVN authentication to work with LDAP / Active Directory. My SVN installation works fine, but after enabling LDAP in my apache vhost, I just can't get my users to authenticate. I can use a selection of LDAP browsers to successfully connect to Active Directory, but just can't seem to get this to work. SVN is setup in /var/local/svn Server is svn.domain.local For testing, my repository is /var/local/svn/test My vhost file is as follows: <VirtualHost *:80> ServerAdmin [email protected] ServerAlias svn.domain.local ServerName svn.domain.local DocumentRoot /var/www/svn/ <Location /test> DAV svn #SVNListParentPath On SVNPath /var/local/svn/test AuthzSVNAccessFile /var/local/svn/svnaccess AuthzLDAPAuthoritative off AuthType Basic AuthName "SVN Server" AuthBasicProvider ldap AuthLDAPBindDN "CN=adminuser,OU=SBSAdmin Users,OU=Users,OU=MyBusiness,DC=domain,DC=local" AuthLDAPBindPassword "admin password" AuthLDAPURL "ldap://192.168.1.6:389/OU=SBSUsers,OU=Users,OU=MyBusiness,DC=domain,DC=local?sAMAccountName?sub?(objectClass=*)" Require valid-user </Location> CustomLog /var/log/apache2/svn/access.log combined ErrorLog /var/log/apache2/svn/error.log </VirtualHost> In my error.log, I don't seem to get any bind errors (should I be looking elsewhere?), but just the following: [Thu Jun 21 09:51:38 2012] [error] [client 192.168.1.142] user alex: authentication failure for "/test/": Password Mismatch, referer: http://svn.domain.local/test/ At the end of "AuthLDAPURL", I have seen people using TLS and NONE but neither seem to help in my case. I have the ldap modules loaded and have checked as much as I know, so any help would be most welcome. Thanks

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• Running Visual Studio 2010 in a University Campus

  - by Woondows

  We have just installed Windows 7 Enterprise x64 in one of our computer labs being used by students for programming. However, when we installed Visual Studio 2010 Ultimate on the machines, we found that to even launch the application (devenv.exe), required the student to enter the administrator password (the usual UAC prompt). Of course, we could just turn off UAC, but that would defeat the purpose of having it in Windows 7. On the other hand, we cannot really give the students local administrator privilege, as we are concerned that they will do some malicious stuff on the computers. Previously when we used Windows XP Professional running Visual Studio 2005, we had no problems. Kindly advise if there's any workaround for this. EDIT: Thanks for the answer guys. Mayank, your links may work for Visual Studio .Net, but it doesn't seem to work for Visual Studio 2010. Ryan, Tieson, I'm intrigued that you guys managed to get it working easily. FYI I don't manage the Group Policies, but I can get them changed if necessary. Any particular GP that I should be looking at? Suggestions to how to troubleshoot further why UAC is being invoked? At least now I know for sure that this is not supposed to be the default behaviour for Visual Studio 2010 so I'm going to keep digging for a solution. Will try running Procmon and see if i can find something..

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• Install VirtualBox on Ubuntu 12.04.1 (on [Samsung] Chromebook)

  - by iphonedev7

  I have dual booted Ubuntu Linux 12.04.1 LTS on my Samsung Series 5 ChromeBook, and am trying to run/install Oracle VirtualBox (from the generic .run file downloaded from their website). However, every time I try to run it (as root from the command line), it gives me the following error occurs: Please install the build and header files for your current Linux kernel. The current kernel version is 3.4.0 Problems were found which would prevent VirtualBox from installing. I have tried the version from the Software Center, as well as the command line installation, both of which gave me errors based on my linux-headers/linux-kernel/linux-[kernel]-image. Here's an error I keep getting (on the command line): First Installation: checking all kernels... It is likely that 3.4.0 belongs to a chroot's host Building only for 3.5.0-18-generic Building initial module for 3.5.0-18-generic ERROR (dkms apport): kernel package linux-headers-3.5.0-18-generic is not supported Error! Bad return status for module build on kernel: 3.5.0-18-generic (x86_64) Consult /var/lib/dkms/virtualbox/4.1.12/build/make.log for more information. Setting up virtualbox-qt (4.1.12-dfsg-2ubuntu0.2) ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place ...And one of the more cryptic errors I get when trying to start any Virtual Machine: Result Code: NS_ERROR_FAILURE (0x80004005) Component: Machine Interface: IMachine {5eaa9319-62fc-4b0a-843c-0cb1940f8a91}

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• Good references to know why has my computers stopped responding me

  - by Peterstone

  Hello all! I´m a windows xp user (but not for much time...) and I usually see how my computer stop of responding me. The process is this: Firsly it became totally stopped or very slow for certain periods of 5 minutes. How could I do? After that it gets stopped (Even not totally because If I click on the bar I see a blinking response in the bar botton of the program I click on. It´s could be anything related with security (like the firewall or some virus)? Computer university: I usually experience this, using Matlab (R2007a) with System Generator (its respective compatible version) My personal laptop: It´s usually works well but when stopped periods became to appears I know in not much time it will became totally stopped. I usually see how Word 2007 get stopped and after a while my windows xp gets stopped. (well I can access to the the manage task pressing ctr+alt and...). The only solution I see is to kill program by program... My petition: Please, I need good references that help me how to think in order to avoid or to manage the problems previously described. Does anyone know usefull books or articles? EDIT: Laptop: OS: XP Home Edition Version 2002 SP3 Hardware: HP Mini Intel(R)Atom(TM) CPU N270 @1,60GHz 1.99 GB RAM University Computer: OS: XP Profesional SP3 Hardware: AMD Athlon(tm) XP 1800+ 1.54 GHz, 768 MB RAM

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• Issues regarding internet connectivity

  - by andySF

  Hello. My problem started when Yahoo Messenger stopped connecting. I've tried to see if Internet Explorer was working but will not load any page. The diagnostics of Internet Explorer says that is something wrong with my dns(using just ip of google or yahoo or my local webserver was not working). I use Windows 7 and at the moment i've had Internet Explorer 8 and after a lot of failing updates to ie9 I've successfully install the Romanian version of IE9(now i have ie8 after a system restore). Then I installed the service pack 1. I've done a lot of things and I will try to enumerate them, but my problem persists. Settings from Yahoo Messenger and Internet Explorer are OK. I've try to reset winsock and ip from netsh. I've scanned my pc with spybot, mallwarebytes, Trojan Remover(simplysup), Loaris Trojan Remover, Avast, Nod32, Kaspersky, Bitdefender,alot of registry cleaner including CCleaner and maybe others that I cannot remember now. I reset the registry permissions using subinacl. At a moment my files permissions was set jut to "trusted installer" and I've put the permission back to files and folders using the model of other windows 7 machine. I have try so many things that now i'm stuck in a loop using different security tools to check for problems. Oh, and my virtual machines are working just fine.(I'm using VirtualBox) Please Help. PS, Reinstalling Windows is not an option. Thank you!

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• How to set up a easy-to-use proxy for the whole system with WinXP client and server?

  - by Pekka

  I am working together intensively with a colleague on the Canary Islands. We speak through live messenger and work together using a RDP software. She has frequent problems with connections to certain big-name and small-name sites (amongst others live.com, google.com, gmx.de) very likely to be caused by the spanish provider (the connections simply time out, this has been going on for weeks already). I have been thinking about setting up my computer as a proxy to make these connections work. I have a DSL connection and am behind a NAT capable router that I control. Does anybody know a simple, "one-click" way to transport ALL network traffic through a remote proxy? Without having to set proxy settings for each application that uses the internet? VPN is not an option, because I am behind a firewall that supports protocol 47 and such, but I have never succeeded in getting an incoming VPN connection to work. I can however redirect normal traffic using NAT. A VPN solution that does not need strange protocols would also be an option.

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• Network Load Balancing and AnyCast Routing

  - by user126917

  Hi All can anyone advise on problems with the following? I am planning on installing the following setup on my estate: I have 2 sites that both have a large amount of users. Goals are to keep things simple for the users and to have automatic failover above the database level. Our Database will exist at the primary site and be async mirrored to the secondary site with manual failover procedures.The database generate sequential ID's so distributing it is not an option. I plan to site IIS boxes at both sites with all of the business logic on them and heavy operations. The connections to SQL will be lightweight and DB reads will be cached on IIS. On this layer I plan to use Windows network load balancing and have the same IP or IPs across all IIS boxes at both sites. This way there will be automatic failover and no single point of failure. Also users can have one web address regardless of which site they are in automatically be network load balanced to their local IIS. This is great but obviously our two sites are on different subnets and as this will be one IP address with most of our traffic we can't go broadcasting everything across the link between the sites. To solve this problem we plan to use AnyCast routing over our network layer to route the traffic to the most local box that is listening which will be defined by the network load balancing. Has anyone used this setup before? Can anyone think of any issues with this? Also some specifics I can't find anywhere at the moment. If my Windows box is assigned an IP and listening on that IP but network load balancing is not accepting specific traffic then will AnyCast route away from that? Also can I AnyCast on a socket level?

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• Dovecot authentification not working

  - by user1488723

  I run a Ubuntu 10.04 VPS with Postfix and Dovecot installed. For a while I had problems with the mailserver itself (Postfix) but now it runs ok. I can telnet into it from localhost (telnet localhost 25 while logged in) and Im blocked if I try to do it from the outside (telnet mail.example.org 25). This is as it should be according to my main.cf However when I try to log in using Dovecot (openssl s_client -connect mail.example.com:993) I'm allowed in but denied when trying to identify myself as a user: Excerpt from Dovecot log in: Key-Arg : None Start Time: 1341074622 Timeout : 300 (sec) Verify return code: 18 (self signed certificate) OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE AUTH=PLAIN AUTH=LOGIN] Dovecot ready. When I continue and try to log in to a specific user with the command: A001 login user password I get: A001 NO [AUTHENTICATIONFAILED] Authentication failed. I've reset the password to ensure it is correct and I know the user (user) exists on the system. When I do /etc/init.d/dovecot reload I get: /etc/init.d/dovecot: 29: maildir:~/Maildir: not found * Reloading IMAP/POP3 mail server dovecot [ OK ] Could it be that the mailboxes isn't found? Postfix main.cf: home_mailbox = Maildir/ mailbox_command = recipient_delimiter = + inet_interfaces = all smtpd_use_tls = yes smtpd_tls_auth_only = no smtpd_tls_loglevel = 1 smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem smtpd_sasl_auth_enable = yes smtpd_client_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination broken_sasl_auth_clients = yes smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_security_options = noanonymous smtpd_sasl_local_domain = $mydomain Dovecot.conf: protocols = imap imaps disable_plaintext_auth = no log_timestamp = "%b %d %H:%M:%S " ssl = yes ssl_cert_file = /etc/postfix/ssl/smtpd.crt ssl_key_file = /etc/postfix/ssl/smtpd.key mail_location = maildir:~/Maildir auth_verbose = yes mail_access_groups = mail auth_username_chars = abcdefghijklmnopqrstuvwxyz0123456789 protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep } auth default { mechanisms = plain login passdb pam { } userdb passwd { } socket listen { client { path = /var/spool/postfix/private/auth user = postfix group = postfix mode = 0660 } } }

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• Remote Desktop Connection issues

  - by stead1984

  I have a server at a remote site, the sites are connected to each other a site-to-site VPN connection using Cisco ASA 5510 firewalls. One end is managed by me, the other managed by the remote location's IT, between the 2 of us is another party who manage and route the connections. Remote desktop has been working fine with no problems then recently I noticed it was working for ONE server over the VPN which it previously had done. All the routes seem fine and I can still ping the remote server and even download files from an FTP site on the remote server.... so the VPN seems fine. Remote Desktop works fine to the remote server within the remote location but not over the VPN. I don't understand why it's stopped working, I originally thought it was a rule in place by the other party but they stress it's not them. The only thing that has changed on the server initiating the RDP connection is that it now runs file services sharing a folder. The source server (remote location) may or may not have had updates applied. Any idea's?

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• FreeBSD's ng_nat stopping pass the packets periodically

  - by Korjavin Ivan

  I have FreeBSD router: #uname 9.1-STABLE FreeBSD 9.1-STABLE #0: Fri Jan 18 16:20:47 YEKT 2013 It's a powerful computer with a lot of memory #top -S last pid: 45076; load averages: 1.54, 1.46, 1.29 up 0+21:13:28 19:23:46 84 processes: 2 running, 81 sleeping, 1 waiting CPU: 3.1% user, 0.0% nice, 32.1% system, 5.3% interrupt, 59.5% idle Mem: 390M Active, 1441M Inact, 785M Wired, 799M Buf, 5008M Free Swap: 8192M Total, 8192M Free PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 11 root 4 155 ki31 0K 64K RUN 3 71.4H 254.83% idle 13 root 4 -16 - 0K 64K sleep 0 101:52 103.03% ng_queue 0 root 14 -92 0 0K 224K - 2 229:44 16.55% kernel 12 root 17 -84 - 0K 272K WAIT 0 213:32 15.67% intr 40228 root 1 22 0 51060K 25084K select 0 20:27 1.66% snmpd 15052 root 1 52 0 104M 22204K select 2 4:36 0.98% mpd5 19 root 1 16 - 0K 16K syncer 1 0:48 0.20% syncer Its tasks are: NAT via ng_nat and PPPoE server via mpd5. Traffic through - about 300Mbit/s, about 40kpps at peak. Pppoe sessions created - 350 max. ng_nat is configured by by the script: /usr/sbin/ngctl -f- <<-EOF mkpeer ipfw: nat %s out name ipfw:%s %s connect ipfw: %s: %s in msg %s: setaliasaddr 1.1.%s There are 20 such ng_nat nodes, with about 150 clients. Sometimes, the traffic via nat stops. When this happens vmstat reports a lot of FAIL counts vmstat -z | grep -i netgraph ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP NetGraph items: 72, 10266, 1, 376,39178965, 0, 0 NetGraph data items: 72, 10266, 9, 10257,2327948820,2131611,4033 I was tried increase net.graph.maxdata=10240 net.graph.maxalloc=10240 but this doesn't work. It's a new problem (1-2 week). The configuration had been working well for about 5 months and no configuration changes were made leading up to the problems starting. In the last few weeks we have slightly increased traffic (from 270 to 300 mbits) and little more pppoe sessions (300-350). Help me please, how to find and solve my problem?

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• Intermittent extrememly long response times when downloading documents

  - by pap

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

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