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• How to remove Ahnlab policy agent?

  - by R.K.

  Anybody know how to remove the Ahnlab Policy agent? I was forced to install it so that I could connect to the campus network when I visited Korea. Now that I'm home, I would like to remove it. However, it resists all uninstallation efforts. It gives me an Access is denied error whenever I try to stop the service. Used AppRemover too, to no avail. Tried removing it in safe mode but it doesn't work either. Does anybody know of a solution short of booting up a Linux distro and deleting the Ahnlab files with it?

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• Computer shutsdowns when trying to boot

  - by Zexanima

  I have an IBM ThinkCentre, and I was talking to someone on Skype when it suddenly just shutoff. When I rebooted it asked me to start windows normally or in safe mode, but as soon I choose an option (Any of them) it shuts back down. So I thought it was a problem with windows and tired booting from a Hirens disk, but same thing. I've been using this computer without problems for over a year know. Any idea's for me to try? Unfortunatly I don't have any powersupplies or extra RAM to switch out to try anything like that. EDIT I left it off for a while and it's booting to windows now. I would still like to know what might have been causing it to do that if you have any ideas.

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• setting rpmforge repository for Linux (RHEL)

  - by Ashish

  Hello, I had a Linux centos(5.5) machine, on this i had deployed amavisd (with clamav and spamassassin). Referred these: http://wiki.centos.org/HowTos/Amavisd http://wiki.centos.org/PackageManagement/Yum/Priorities Now I have a linux RHEL machine, details are as follows: (Linux version 2.6.18-164.6.1.el5 ([email protected]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)) x86_64 GNU/Linux Red Hat Enterprise Linux Server release 5.5 (Tikanga)) I want to set up the above mentioned software's on this(RHEL) machine, for that I do (as per the reference link): install yum-priorities but i am unable to install this on my said machine, because the default yum repository provided by RHEL doesn't contain this. How can i deploy the above software's on my RHEL machine, suggest any safe alternate. Please guide since i am a newbie in this matter. thanks in advance Ashish Sharma

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• Load balancing and HTTPS strategies

  - by Dan

  I am faced with the following problem: Servers get saturated since current load balancing strategy is based on client IP. Some corporate clients access our servers from behind large proxies so all clients appear with same IP to our load balancer. I think we are using some hardware load balancing device (can investigate further if necessary). We need to maintain session affinity (site is constructed in ASP), so all requests with same IP get routed to the same node. Since all the communication goes over the HTTPS, no request data (like session Id) is available to balancer as a client discriminator. Is there a way to use some other data besides the IP to distinguish between clients and route the clients even when coming from same IP to different nodes? Note: I need to maintain the traffic between the balancer and nodes safe (encrypted).

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• Fail rate of EBS snapshots and AMIs?

  - by user784637

  According to Amazon the fail rate of EBS volumes is: As an example, volumes that operate with 20 GB or less of modified data since their most recent Amazon EBS snapshot can expect an annual failure rate (AFR) of between 0.1% – 0.5%, where failure refers to a complete loss of the volume http://aws.amazon.com/ebs/ However, I was curious to know the fail rate of EBS snapshots and private AMIs that a system admin would take. Since the EBS snapshots and AMIs are stored in Amazon s3, is it safe to assume that the likelihood you cannot rollback to a previous snapshot or AMI the same likelihood that a file gets lost in s3? Amazon S3’s standard storage is: ... Designed to provide 99.999999999% durability and 99.99% availability of objects over a given year. http://aws.amazon.com/s3/

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• Forward Shibboleth Environment Variables to Tomcat via Apache

  - by Deepak Singh Rawat

  I am using Shibbolethv2.3 with Apache web server and Tomcat application server. I am using Apache as a reverse proxy using mod_proxy.so. I am not able to forward the Shibboleth environment variables from Apache to Tomcat. I am able to forward the attributes in the headers but as already mentioned in the wiki this approach is not safe. I have tried forwarding the environment variables by the following directive : SetEnv AJP_username ${username} then at the Java side I can access the attribute by : request.getAttribute("username"); The strange thing here is that, I get a different value instead of the one set by Shibboleth. I get the Windows account name as a result. If I use any other attribute name, I get a null value. I have searched a lot and have run out of options. Please guide me towards the right solution. My setup details : Shibboleth version : 2.3 OS : Windows XP SP3 Webserver : Apache 2.2 Application Server : Tomcat 6 Proxy module : mod_proxy.so

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• What's the largest message size modern email systems generally support?

  - by Phil Hollenback

  I know that Yahoo and Google mail support 25MB email attachments. I have an idea from somewhere that 10MB email messages are generally supported by modern email systems. So if I'm sending an email between two arbitrary users on the internet, what's the safe upper bound on message size? 1MB? 10MB? 25MB? I know that one answer is 'don't send big emails, use some sort of drop box'. I'm looking for a guideline if you are limited to only using regular smtp email.

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• Web Server Scripting Hack to Maintain State and Keep a Domain Cookieless

  - by jasonspalace

  Hello, I am looking for a solution on a LAMP server to keep a site cookieless such as "example.com", where static content is served from "static.example.com", and with rules in place to rewrite requests for "www.example.com" to "example.com". I am really hoping to avoid setting up a cookieless domain for the static content due to an unanswered SEO concern with regards to CNAMEing to a CDN. Is there a way, (or safe hack), that can be implemented where a second domain such as "www.example2.com" is CNAMEd, aliased, or otherwise used with "example.com" to somehow trick a php application into maintaining state with a cookie dropped on "www.example2.com" therefore keeping all of "example.com" cookieless? If such a solution is feasible, what implications would exists with regards to SSL and cross-browser compatibility other than requiring users to accept cookies from 3rd party domains and possibly needing an additional SSL to keep the cookie secure? Thanks in advance to all.

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• Computer crashes and won't start, LED indicator blinks slowly

  - by hexacyanide

  I have a MSI K8NGM2-FID motherboard coupled with a AMD Athlon 3700+ and an Antec TPII-550 power supply. The computer crashes at random times in operation, sometimes taking a while to crash, and sometimes crashing right after Windows XP shows the desktop after boot. The CPU temperature is always in the safe range, usually 30-33 degrees Celsius, and swapping the RAM has not done anything, so the crashes aren't cause by the RAM. What could be causing this? If the motherboard were fried, would the computer even boot at all? What causes inconsistent crashing of the computer? After the computer crashes, the LED power indicator blinks about once a second, and the computer does not respond to the power button. This behavior continues until the computer's power supply is completely removed.

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• Local Password Management

  - by ultimazombie88

  In our office (and I am sure many others) we access various websites and tend to share one account with our team. For example, we share credentials to Ebay and change them every few weeks to maintain some sense of security. However, we know this does not allow for any type of accountability for major changes. After some discussion we want to try to manage how we distribute credentials for sites that may not offer child accounts. Is there any smart and safe way to do this? If so how do you do it?

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• Setting up a NetApp as a simple FC LUN carver

  - by MikeyB

  For a particular application, I want to configure a NetApp filer (7-mode) to be as close as possible to an old-fashioned storage subsystem without snapshots or fancy features. vol create vol_ESX -s volume aggr1 1500M vol options vol_ESX nosnap on vol options vol_ESX nosnapdir on vol options vol_ESX fractional_reserve 0 snap sched vol_ESX 0 0 0 snap reserve vol_ESX 0 # Ensure no snapshots exist on vol_ESX snap list vol_ESX # Create a LUN or multiple LUNs that take up the entire volume lun create -s 1565523968 -t vmware /vol/vol_ESX/lun0 lun map /vol/vol_ESX/lun0 challenger Is this safe? Is this the Best Way of doing what I'm trying to accomplish? Is there anything else I should set?

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• Everything Windows Explorer does hangs up t some time or another

  - by William Barnes

  Yes this is a duplicate of something I have tried to ask in the past. I think I am posting wrong since my first question was deleted OK I ran SCANNOW nd it came back with no problems. I booted in Safe mode and windows evplorer worked OK. I am not sure what that proves. I also ran AUTRUNS and disabled everything that you said, but it still dies. I read someplace that it could be a service program, but I can't find that link anymore. Something about shutting off all non-windows SP's and then start adding back SP's until it quits. The problem is that sometimes it will work, but most of the time it does not. Makes saving or retrieving anything impossible. SAVEAS hangs up, my Garmin Map updater hangs up etc.. I was having this problem before installing Garmin so I am reasonably sure it is not the problem HELP PLEASE, I don't have many brain cells left and can't afford to lose more.

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• Looking for Driver Diagnostic and Repair Software

  - by risingTide

  Greetings, I am currently plagued with BSODS on startup (both normal and safe mode) for my XP Pro. After much troubleshooting I have determined it is a driver problem. However, because I cannot even boot I do not know how to fix it. I am looking for some specific driver diagnostic and repair software that I can use from another computer to access and fix the driver problem on the problematic XP drive. (I can access the problematic drive via USB from another computer.) I will offer more details about my specific situation if it is helpful or necessary. Thank you for your time!

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• What are the common Control combinations in a terminal setting

  - by Hamish Downer

  I would like to have a good guide to the common Control key combinations in use in bash (and similar) shells and the combinations used by common programs in use in those shells. My particular motivation is to be able to run GNU screen on one computer, ssh to a second computer and use screen and irssi on that computer. So I need to use something other than Ctrl-A to control one of the screen sessions. So I need to know what are Control key combinations are safe to use. But I imagine this list would be useful for others who want to bind custom actions to Control key combinations. I reckon we'd be best to group the Control key combinations by application (eg. bash itself, screen, vim, emacs), to make it easy to spot the applications you use or can ignore. So please one application per answer - hope that works.

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• HFS for Windows by Paragon BSOD

  - by texmex5

  Installed HFS for Windows 7 yesterday. Did a reboot. Copied some files from my internal drive to external hfs drive. Did another reboot and rebooted to Mac. Mac worked fine. Then yesterday the battery went dead on my mac and the computer switched off. This morning tried to boot into windows but got a BSOD as soon as I moved my mouse in the login screen. BSOD refeers to an error with service HFSPLUS.SYS Now when I try to boot into mac (pressing alt while restarding) the mac drive isn's shown and I can only boot into Windows 7 Safe Mode. Cannot uninstall HFS for Windows the uninstaller in control panel says: "THE WINDOWS INSTALLER SERVICE COULD NOT BE ACCESSED. THIS CAN OCCUR WHEN WINDOWS INSTALLER IS NOT CORRECTLY INSTALLED". SETUP: Intel Core 2 Duo, P8600 @ 2.40GHZ, 4GB RAM, WINDOWS 7 ULTIMATE 32 BIT

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• How to manage credentials on multiserver environment

  - by rush

  I have a some software that uses its own encrypted file for password storage ( such as ftp, web and other passwords to login to external systems, there is no way to use certificates ). On each server I've several instances of this software, each instance has its own password file. At the moment number of servers is permanently growing and it's getting harder and harder to manage all passwords on all instances up to date. Unfortunately, some servers are in cegregated network and there is no access from them to some centralized storage, but it works vice versa. My first idea was to create a git repository, encrypt each password with gpg and store it there and deliver it within deployment system, but security team was not satisfied with this idea and as it is insecure to store passwords in repository even in encrypted view ( from their words ). Nothing similar comes to my mind. Is there any way to implement safe and secure password storage with minimal effort to manage all passwords up-to-date? ps. if that matters I've red hat everywhere.

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• Which PHP accelerator to use with prefork mpm (CentOS and RedHat default httpd settings)

  - by FractalizeR

  Hello. As you know, even if it is possible to start httpd in worker mode under CentOS/RedHat, php in default rpm repo is not thread-safe. And the default configuration for stability is mpm_prefork. So, two questions: Is there PHP accelerator capable of working in mpm_prefork mode (using shm or whatever)? If there is none, what can be done to improve PHP speed on CentOS/RedHat systems (I want to use rpms, preferably from default CentOS repo; building custom PHP from source code is not a good option for me)

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• Files not running and folder named C:\windows\restop found with system files in it on windows 98

  - by Max

  I have an old Windows 98 machine that I started using for some stuff a few days ago. Today I noticed that I can't run many system files, so I checked my system folder and I noticed that most of the files are gone. After doing a search for them I found them in a folder in C:\windows called "restop". I don't really feel comfortable restarting because all the files are moved. Does anyone know what might've caused this or if it's safe to restart? Is there some special way to move the files back?

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• Windows 7 login screen show only last user and "Other User" icons after profile problem.

  - by Mike Thompson

  I recently had a profile problem with my Windows 7 PC. My original profile in the registry had ".bak" appended to it and a new profile was created. I was unable to login with the new profile. I fixed this immediate problem by logging on in safe mode. This enabled me to restore my original profile. However, since that moment the login screen now operates differently. Instead of showing icons for all the users with accounts on the PC, it now only shows two icons. The first icon is the last user who logged on and the second icon always shows "Other User". I have tried several different solutions recommended by other people with similar problems, but none of them have fixed the problem. I think the person who started this thread has the same problem, but none of the proposed solutions helped him either. Any help much appreciated.

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• Linux's best filesystem to work with 10000's of files without overloading the system I/O

  - by mhambra

  Hi all. It is known that certain AMD64 Linuxes are subject of being unresponsive under heavy disk I/O (see Gentoo forums: AMD64 system slow/unresponsive during disk access (Part 2)), unfortunately have such one. I want to put /var/tmp/portage and /usr/portage trees to a separate partition, but what FS to choose for it? Requirements: * for journaling, performance is preffered over safe data read/write operations * optimized to read/write 10000 of small files Candidates: * ext2 without any journaling * BtrFS In Phoronix tests, BtrFS had demonstrated a good random access performance (fat better than XFS thereby it may be less CPU-aggressive). However, unpacking operation seems to be faster with XFS there, but it was tested that unpacking kernel tree to XFS makes my system to react slower for 51% disregard of any renice'd processes and/or schedulers. Why no ReiserFS? Google'd this (q: reiserfs ext2 cpu): 1 Apr 2006 ... Surprisingly, the ReiserFS and the XFS used significantly more CPU to remove file tree (86% and 65%) when other FS used about 15% (Ext3 and ... Is it same now?

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• Upgrading openSUSE 11.1 with Plesk Panel 9.3 to PHP 5.3

  - by Jonathan

  I'm running a VPS with openSUSE 11.1 (i586). On the VPS is Parallels Plesk Panel 9.3.0 installed. The current PHP-version is PHP 5.2.11. I want to upgrade PHP to PHP 5.3, but I can't find good instructions on how to do this. If I check for updates in Zypper, it says this is the latest release. In the Plesk Updates isn't an update either, both via the webbased interface and the command line interface. On Software.openSUSE.org I can find packages for PHP 5.3.1 in both the server:php/server_apache_openSUSE_11.1-repo and the server:php/openSUSE_11.1-repo (can't post the link because I'm a newbie here). But if I add one of those to Zypper, I still don't see an update. Is there here somebody who knows how to do this? And is it completely safe to update that way? I don't want to end up with a broken VPS... Thanks! Jonathan

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• Windows 7 laptop's volume with headphones way too loud

  - by jcao219

  I have two headphones, neither has any amps or volume control, and both have the same problem with this computer. I normally have the volume on 10%, and that is optimal. I'm still very afraid that someday it will be at 100% and i'll accidentally have my headphones on. I tested how loud it is at maximum volume -- it's earsplittingly loud! In fact, it's so loud that if I lay the headphones down on the table, I can listen to a song perfectly clearly from meters away. Is there any way to make the volume control more safe for the ears?

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• Secure PHP environments with PHP-FPM and SFTP

  - by pdd

  I'd like to set up secure environments for a small number of untrusted PHP websites on a Debian server. Right now everything runs on the same Apache2 with mod_php5 and vsftpd for administrative file access, so there is room for improvement. The idea is to use nginx instead of apache, SFTP through OpenSSH instead of vsftpd and chrooted (in sshd_config), individual users for each website with their own pool of PHP processes. All these users and nginx are part of the same group. Now in theory I can set 700 permissions on all PHP scripts and 750 on static files that nginx has to serve up. Theoretically, if a website is compromised all the other users' data is safe, right? Are there better solutions that require less setup time and memory per website? Cheers

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• Windows boots to Black Screen of Death — Is my HDD faulty?

  - by Flynn1179

  My wife's PC suddenly stopped booting up properly. It gets as far as the Windows 'loading' screen with the bar scrolling away, but that's as far as it gets for some time, then suddenly flashes up a BSoD barely long enough to see, then the display cuts out. We've got identical PCs, and after swapping components, I established that my PC suffers the same problem if I swap in the HDD. Even if I plug hers in as a second HDD on my machine, it still does the same thing, even though it's booting from mine. I can't even boot her machine from CD or DVD either, so I couldn't even use a recovery disc. I did manage to partially boot my PC into safe mode with the other HDD attached, and it got as far as loading 'crcdisk.sys' and froze. Anybody know what could be wrong with it, or at least how I can get the data off the disk? I'm assuming there's still data on the disk, given that it at least shows me the vista 'loading' screen.

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• Unlocking AMD Phenom II X2 550 Black Edition cores - what are the risks?

  - by Vilx-

  I've got the above mentioned CPU and a GigaByte GA-MA790XT-UD4P motherboard, which should be capable of unlocking the extra two cores - if I'm lucky and they're not faulty. The Internet is full of instructions on how to do that. What I don't have is spare money to buy new hardware if I brick something. What are the risks when attempting to do this? Is it completely safe, or can I be left with an expensive pile of junk? What should I keep in mind when doing so? Bigger cooler maybe (I'm running with the default box cooler)? Should I lower the frequencies too? I've never done any OC before.

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