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• Audit success in event log from not administrator IP - is that immediately a hack success indicator?

  - by Valentin Kuzub

  I checked event log today and between mass of failed audit events I found some successes which originated from not my country. However they look a little weird and no process is specified, while when I logon using RDP it says winlogon.exe I am wondering whether that means my system was compromised or there are good variants and it doesnt mean its all that bad. I am using a VPS solution if thats useful.

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• Linux: Dropbox alternative with sftp/rsync/... access

  - by Daniel

  Currently on my VPS I'm running couple of sites and Dropbox daemon to store backups. Problem is that VPS has 512M RAM and it was enough until new version of Wordpress (I don't know why, but now it consumes more memory) so I have a really bad choice: either stop Dropbox daemon and backups or to buy more memory (not that expensive but still). So I'm looking for some way to rsync data into Dropbox or similar service or figure out how to make Dropbox consume less memory. Any ideas?

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• logrotation within Jboss 4

  - by Mohammad Alam

  I have looked around and I havent been able to find a clear cut answer to how this can be configured. i read that the native logrotate is a bad idea. so is there a way to do this within the log4j configuration?

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• Group readable cron jobs a security risk?

  - by Ibrahim

  Hi, I was just wondering, is using a cron job that is group readable a security risk? In this case, the script is chmod 755, and the group is basically a group of the sysadmins on the machine. The permissions seem to be fine, but I'm just wondering whether it's a bad idea to keep this script in a group or world readable place because it's a backup script that needs to be run as root. Thanks!

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• RSSI value of wifi connection - how to interpret?

  - by knorv

  In MacOS X you can obtain the RSSI value of your by wifi connection by holding Alt and clicking on the Wifi-indicator icon. My questions are: What range of values can RSSI take? What RSSI ranges corresponds to "good", "normal" and "bad" connectivity?

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• Email delivery error

  - by Tim

  I sent an email, but immediately got a reply saying: Final-Recipient: rfc822;[email protected] Action: failed Status: 5.0.0 (permanent failure) Diagnostic-Code: smtp; 5.1.2 - Bad destination host 'DNS Hard Error looking up smtpint.xxx.edu (MX): NXDomain' (delivery attempts: 0) I was wondering what this error report means, where in the delivery route the error happened, who should be contacted to solve this issue and how to solve it? Thanks and regards! I also appreciate if someone can explain a bit more about the mechanism behind the email delivery.

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• FATA disk performance for VMware

  - by Sergei

  Hi, We are moving to the dataceneter and planning to have tiered storage on EVA4400 - FC RAID 10 for SQL databases and RAID5 across 24 FATA 1TB disks form VMware ESX guests.HP is describing FATA disks as suitable for near online storage, however I am not convinced that 24 spindles will not be enough for running VMWare for 3 ESX servers. Does anyone has opinion on why this could be a such a bad idea?

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• Anybody have experience with using Nexenta?

  - by churnd

  I'm evaluating the Nexenta platform to hopefully one day replace our legacy file servers. I would primarily use it as a CIFS server in an Active Directory environment. Anyone out there have any experience using it? Good? Bad? Which hardware vendor did you go with? Why? Did you build your own (Supermicro) or go prebuilt?

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• How to make mouse wheel to scroll control under mouse cursor?

  - by skevar7

  Currently, mouse wheel scrolls the control that has keyboard focus. That's not good when window has several scrollable controls, because I have to click control first and then scroll. And the same again when trying to scoll another control. Especially bad, when that control has some action associated with click (like MSDN's article list - it opens new article on click). So, is there any tool to fix mouse scroll behavior?

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• Need a good colocation host

  - by storm

  I'm looking for a good collocation host in Los Angeles. I've looked at quite a few hosts, but found precious few reviews. Has anyone had particularly good or bad experiences that can point me in a good direction? We will be starting out with 2U's and I'm leaning towards burstable bandwidth rather than 95th percentile. Thanks for the ideas.

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• Why does PSEXEC work if I don't specify a password?

  - by Kev

  When I run PSEXEC to launch a process on a remote machine, if I specify the password in the command line it fails with: PsExec could not start cmd.exe on web1928: Logon failure: unknown user name or bad password. psexec \\web1928 -u remoteexec -p mypassword "cmd.exe" If I just specify: psexec \\web1928 -u remoteexec "cmd.exe" and type in the password it works just fine. The originating server is Windows 2003 and the remote server is Windows 2008 SP2.

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• MySQL Execution Time Spikes

  - by Brett

  I am having issues with MySQL all of the sudden today. Details: OS: CentOS release 5.7 Server type: Parallels virtuozzo container running on mediatemple DV 4.0 package Average total memory usage: <500mb Total memory usage allowed: 1gb (part of shared pool for emergency only, users are only guaranteed 500mb) Processor: 1ghz Main database sizes with most usage: 275mb & 107mb server stack: nginx 1.0.10, mysql 5.1.54, php 5.3.8 with php-fpm innodb_buffer_pool_size=100M php-fpm max children: 5 Webapps: custom php-based sites, magento & drupal slow query timeout is set to 1 second Steps I completed towards diagnosis: Cannot restart container yet - I will try later tonight when our domestic traffic has dropped Enabled mysql and php-fpm slowlog. Found functions that did DB queries in php-fpm slowlog were taking over 1s to complete at times Found some simple queries in mysql slowlog taking well over 1s to complete that should take less than 1s. Most interesting - execution time seems to spike at times. A query will take .2s a couple times, then one time it will take 8s to run the same query. These results were verified by running raw SQL queries through mysql command line. Top does not reveal anything too interesting Only resource related thing i can see is load averages much higher than normal Up until today, mysql has been fine, there have been no major changes to the db since yesterday. Sometimes things are so bad, I am seeing bad gateway errors after 60s of execution time. Innodb is doing on average 300-1400 reads/sec. Mysql is doing 3-10 queries/sec slow query count in 2 hours uptime is 171 (with slow timeout at 1 second) Tried restarting mysql, nginx, php-fpm multiple times For example: UPDATE `catalogsearch_query` SET `query_text` = 'EW 90', `num_results` = '7532', `popularity` = '99180', `redirect` = NULL, `synonym_for` = NULL, `store_id` = '1', `display_in_terms` = '1', `is_active` = '1', `is_processed` = '1', `updated_at` = '2012-05-08 21:38:31' WHERE (query_id='31'); This query took 17sec to complete one time, rest of the time around .079 sec. But varies, sometimes 1sec, sometimes .004 sec. This is running the same query, over and over with a couple seconds time in between each. Most tables are innodb, and sometimes I noticed the lock time taking 90% of the query execution time, but most of the time lock time is insignificant. Any idea what's going on here?

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• Quickly switch Win7 volume normalization on/off?

  - by romkyns

  Is there some way to quickly toggle the state of volume normalization in Windows 7? When it's off watching movies late is tricky, and when it's on it messes with music in a bad way. It's a great feature, but argh, it requires me to make my way through so many dialogs... Any solution that requires no more than a couple of clicks or keystrokes is welcome - shortcuts, AutoHotkey, tray icon apps.

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• Netdom to restore machine secret

  - by icelava

  I have a number of virtual machines that have not been switched on for over a month, and some others which have been rolled back to an older state. They are members of a domain, and have expired their machine secrets; thus unable to authenticate with the domain any longer. Event Type: Warning Event Source: LSASRV Event Category: SPNEGO (Negotiator) Event ID: 40960 Date: 14/05/2009 Time: 10:24:54 AM User: N/A Computer: TFS2008WDATA Description: The Security System detected an authentication error for the server ldap/iceland.icelava.home. The failure code from authentication protocol Kerberos was "The attempted logon is invalid. This is either due to a bad username or authentication information. (0xc000006d)". For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: c000006d Event Type: Warning Event Source: LSASRV Event Category: SPNEGO (Negotiator) Event ID: 40960 Date: 14/05/2009 Time: 10:24:54 AM User: N/A Computer: TFS2008WDATA Description: The Security System detected an authentication error for the server cifs/iceland.icelava.home. The failure code from authentication protocol Kerberos was "The attempted logon is invalid. This is either due to a bad username or authentication information. (0xc000006d)". For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: c000006d Event Type: Error Event Source: NETLOGON Event Category: None Event ID: 3210 Date: 14/05/2009 Time: 10:24:54 AM User: N/A Computer: TFS2008WDATA Description: This computer could not authenticate with \\iceland.icelava.home, a Windows domain controller for domain ICELAVA, and therefore this computer might deny logon requests. This inability to authenticate might be caused by another computer on the same network using the same name or the password for this computer account is not recognized. If this message appears again, contact your system administrator. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: c0000022 So I try to use netdom to re-register the machine back to the domain C:\Documents and Settings\Administrator>netdom reset tfs2008wdata /domain:icelava /UserO:enterpriseadmin /PasswordO:mypassword Logon Failure: The target account name is incorrect. The command failed to complete successfully. But have not been successful. I wonder what else needs to be done?

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• Running windows 7 on a Mac Pro

  - by Simon

  My question is simple is running windows 7 on a mac pro as the dominat OS a bad idea? im interested in starting some mac programing but still want to do windows based coding. im tossing up between a macbook pro + a desktop or just a Mac pro. Also what development tools are available for mac?

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• Get 5.1 surround sound from computer through a VCR config?

  - by Wedding Nails

  I'm posting to see if my idea of this setup is right and can be done. I currently have the following "equipment": a JVC VCR -quite old-, which has built in surround sound (aka it has several speaker outputs, which I believe is 5.1 and are connected to several speakers that are in every corner of the room), a computer with SPDIF optical output and a new flat screen TV (with built in HDMI). I want the computer to take advantage of the VCR's surround system (all the speakers in the room) in order to play mainly music and video always with all the speakers (5.1) and with the maximum sound quality. Currently, the computer plays sound only through the front speaker (I connect one output to the on board pc audio input) and the quality is really bad. As a side note, the computer video runs with S-video (old school), and the picture quality as you would imagine, is really bad with the new big LCD screen. My main goals are: to upgrade the picture with a new video card which would support HDMI (my tv has HDMI). to buy a SPDIF optical cable, connect one end to the VCR SPDIF input and the other end to the PC output This is theoretically what I've researched so far, and I came out with several questions: in this case, with the SPDIF cable connected, and all the configurations done in windows allowing the 5.1, will I get every content I play "converted" or played through all of my speakers? (I read this forum post). I already know that in order for this setup to play from all the speakers, the content/audio source has to be 5.1. but my question is, if there is a way to play from all of the speakers no matter what type of content I'm playing (that's why I said conversion there) I already know that HDMI cables carry digital sound. Is there a way I can only use said HDMI cord to the tv, and get sound through the VCR? (I'm not too sure about this, I would have to disable the TVs speakers and use the VCR surround as default, but I have no clue wether this can be done or not). Update: The ultimate question is, do I really have to rely on "sound virtualization" technology to get sound from all the speakers, no matter what content I play? (do I require a newer sound card, like a creative soundblaster with said technology?) Thanks!

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• hidden files in windows explorer

  - by user32179

  Hello, I was have a hidden file, but i can't see him in "Explore"(My computer). Then, I was download total commander, and i was see hidder file. In Tools-Folder Options: Show hidden files & folders - checked; Hide protected os files - unchecked; -Why I was don't see a hidden file in "Explore" ? P.S. sorry, but my english is bad )

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• tomcat6 on ubuntu fails when user set to root

  - by J G

  I'm well aware that running tomcat6 is really bad from a security point of view - and opens the box it is running on to all kinds of security risks and attack vectors. That said: When I change the entry in the /etc/init.d/tomcat6 to TOMCAT6_USER=root and then run sudo /etc/init.d/tomcat6 start I get [fail] and nothing is written to the logs under /var/log/tomcat6 and no entry for tomcat6 is created under /var/run How do I diagnose what is going wrong?

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• Is RAID 5 or SnapRAID the better alternative for a media server raid system?

  - by rubo77

  I am using a raid 5 system for my ubuntu 12.04 xmbc media server with 5 disks. Since the data isn't changing a lot and a total loss wouldn't be so bad, cause I have another backup anyway I am thinking about using SnapRAID It sais: SnapRAID is mainly targeted for a home media center, where you have a lot of big files that rarely change The main advantage for me would be power-saving, cause not all disks have to run all the time. Would you recomment using this? (with a regular resync script once a day)

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• Project Honey Pot - mod_httbl

  - by Henko

  I'm very interested in project honey pot. It seems like a smart way of blocking harversters etc from your web server. I found out about mod_httpbl for apache but I haven't find much to read about it other than on project honey pot's homepage. Doesn't seem like a very active project(?) Could someone with exeperience of httpbl tell me if mod_httpbl is good/bad or if there are other better alternatives?

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• Windows minimizing automatically.

  - by Gage cook

  My computer (running xp sp3) keeps minimizing windows or deselecting them automatically. It's so bad that I can't do anything before the windows close. (typing this on my phone) and no, I'm not prssing alt tab, I'm not touching anything when it happens. Had anybody else had this problem? And if so how did you fix it? Please help my pc is completely unusable because of this.

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• RabbitMQ and persistence (blocking writes?)

  - by daharon

  I want to create a RabbitMQ server on a virtual machine (VMware) to be used in production. It will contain persistent queues. I'm wondering if it is a bad idea to store the server on a NAS that's accessed over NFS. Basically my questions are: Will RabbitMQ's writes be blocking? Will the entire queue's operation halt on a write? How much performance degradation should I expect when persisting over NFS?

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• What are RES interrupts (from Munin)

  - by grosser

  Our server recently had a very bad day, and one of the indicators/reasons seems to be that RES interrupts are douple their normal value, but what does this mean ? (other interrupts: LOC+100%, eth1/TLB +30%)

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• Java update "Failed to download required installation files."

  - by therefromhere

  On my Windows 7 machine the Java update consistently fails with this error message. This seems to a common problem, does anyone have an insight into what's going wrong, and is there a fix for it other than either disabling the update check (seems a bad idea from a security point of view) or waiting for the nag message and then manually installing the new version (annoying and stupid from a usability point of view). Note that I did install the previous version manually (updating from 6.23 to 6.30 I think?), thinking that might resolve the issue, but no luck.

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• How to set up a centralized backup server with lots of offsite workstations, intermittent internet connectivity, and stubborn users?

  - by Zac B

  This might be an impossible question. Context: We have a bunch of computers across around 1000 users. We have a centralized office where 900 of the users work, most of the time. Most of the computers are laptops. They are very frequently coming on and off the network for hours at a time. Users often take their computers home and do lots of work from home. In addition, there are a handful of users who work elsewhere in the country, who are offline (no internet connection whatsoever) for more than half of the time they use their machines. All of the machines are Windows 7/XP. Problem: People are always losing data. One day someone accidentally deletes a bunch of files. The next day someone else installs a bad driver or tries to mess with something in system32 and needs a personal data backup/reinstall of Windows. Because of how many of our business operations are done without an internet connection, and how frequently computers come on- and offline, it's unfeasible to make users use network storage for all of their data. We tried giving them Dropboxes, and they stored their files elsewhere. We bought and deployed Altiris, and they uninstalled it and blamed us when they couldn't get files back that they accidentally deleted while they were offline and hadn't taken a backup in months. We tried teaching them backup best-practices, and using scheduled sync tools to upload things to the network drives, and they turned them off because they "looked like viruses". It doesn't help that many of these users are pretty high up in the business and are not amicable to any sort of "you need to do something regularly because we say so" solution. Question: Other than finding another job where IT is treated differently and users are willing to follow best practices, how would people recommend I implement a file backup solution that supports the following: Backs up to a centralized server over LAN or WAN whenever a network link becomes available, or on a schedule. Supports interrupted/resumed backups (and hopefully file-delta only backups), since connections to the network (WAN or LAN) are often slow and only open for half an hour or so. Supports relatively rapid, "I accidentally deleted the TPS reports! Oh no!" single-file recovery, ideally administered from the central backup server rather than the client PC. Supports local-to-local file delta backup on a schedule, so that users without a network connection for a few days can still retrieve accidental deletions or whatnot. Ideally, the local stored backups would be pushed up to the server whenever network link is available. Isn't configurable on the clients without certain credentials. Because the CFOs (who won't give up their admin rights on the domain) will disable it if they can. Backs up the entire hard drive. There are people who are self-righteous about storing things in C:\, or in the recycle bin, or in the C:\Windows dir (yes, I know). I'm fine integrating multiple products/solutions, or scripting different programs together myself (I'm a somewhat competent programmer), but I've been drawing a blank on where to start. Dropbox is folder-specific, Altiris doesn't cope with LAN outages or interrupted/resumed backups, Volume Shadow Copy is awesome for a local-to-local solution, but I don't know how to push days of stored shadow copies up to a server in a 2 hour window of network access. The company is fine with spending decent money on this, thousands (USD) on a server, and hundreds on clients, if necessary. I want to emphasize that this isn't a shopping list request. While I wish there was a program out there that did what I want, I've looked pretty hard, and not found anything that fits the bill. Instead, I'm hoping for ideas on where to start hacking things together from scratch/from different technologies to make something stable that works. Cheers!

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