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• reverse proxy on PFsense, squid or otherwise

  - by Mustafa Ismail Mustafa

  I've been trying to get this to work for days now and its not working. After bashing my head against the desk enough times, I've decided to man up and ask. I'm desperately trying to set up a reverse proxy on the pfsense box itself. One because its a pretty powerful box and its not being utilized to the maximum at all and two because I don't have any spare machines to setup squid (or any other reverse proxy [capable]) server on. So, on pfsense, everytime I set up rules (on ServicesProxy ServerGeneral) as so: acl surveillance dstdomain surveillance.myweb.local; acl camera dstdomain camera.myweb.local; http_access allow surveillance AND camera (ad nauseum) when I check the services, squid stops and refuses to restart until I remove them pesky acls that are supposed to make my life easier! What am I doing wrong? How can I get it to work? Is there another way/package I can use? Thanks

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• Redirect TS Gateway Authentication to RADIUS Server

  - by Brent

  Hi All, I'm trying to set up an environment for my TS gateway server where the authentication for the initial login to the TS gateway server is handled by a RADIUS server (as determined by NPS), then the user uses standard Windows Auth to log in to their destination machine. I have the server successfully passing the auth to the RADIUS server, but only after it does a Windows auth first. The credentials will not match between the Windows Server and the RADIUS server, so the RADIUS auth always fails, and the TS Gateway server will not forward the request to the RADIUS server unless the Windows Auth succeeds. Does anyone know how to disable the Windows Auth requirement on a TS Gateway server? This is a pretty vanilla SBS 2008 box.

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• Connecting Dell PowerVault NAS to ESXi

  - by Matt Fitz

  Just got a Dell PowerVault NAS storage device running Windows Storage Server Standard which includes NFS. When I try and connect the ESXi server I get the following message: Call "HostDatastoreSystem.CreateNasDatastore" for object "ha-datastoresystem" on ESXi "powerhouse" failed. Operation failed, diagnostics report: Unable to complete Sysinfo operation. Please see the VMkernel log file for more details. I am pretty sure it is a username/password type thing. Not sure were to begin though. Also, I am planning on using "Username Mapping" instead of Active Directory. Any ideas would be greatly appreciated

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• EC2 hosted service multi-tenant dynamic DNS solution

  - by accidental admin

  I want to change the model of my EC2 hosted service to have a separate sub domain for each tenant (ie. .example.com). My primary DNS is now with dnsmadeeasy.com, but their dynamic DNS offering seem pretty weak: it requires the API to use my full dnsmadeeasy.com account credentials, I rather have the API use a limited privilege credential that can only add/remove/modify subdomain records from what I gather it only allows to modify existing records, does not allow me to dynamically add/remove records for new tenant subdomains My question what are my alternatives? Is there something in the dnsmadeeasy API offering I misunderstood and I should just use them? Is there some other similar DNS service that has a DDNS offering that satisfies my requirements? Or should I just bite the bullet and host my own DNS (my fear is not configuration/learning/know how, my fear is reliability). If you recommend the latter, can you detail the necessary steps or a link to a good tutorial how to?

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• "Stream" tar action from remote server through Putty?

  - by Pekka

  I am accessing a shared hosting account through Putty / SSH. The account is pretty full, 300 MB below its quota. I need to make a full backup of all data present on the account. Creating a bzip2 file using tar cjf archive.tar.bz2 directory/* fails because there is not enough space for the tar. Does anybody know a way to create a tar file and "stream" it to a local file on my PC? Through putty or any other SSH tool?

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• Unlimited and multi-computer online storage solutions with automatic backup

  - by JRL

  As the title says, what are the existing online storage solutions that provide: unlimited storage automatic backup and allow for an unlimited number of computers (use not tied to a single computer)? There are several existing questions on this site related to online storage solutions, but none that is specifically targeted to what I want, so I thought I'd ask the question. This wikipedia article lists some of them, are there others? How do they compare in terms of price, feature set and ease of use? Update: Kinda disappointed no one has any answers to this so far. JungleDisk looks promising, anyone have experience with it? Update 2: To answer the comments, what I'm looking for definitely DOES exist. These solutions all seem to fit the bill: BackMii CrashPlan DataPreserve Humyo JungleDisk KeepVault SpiderOak And some of them are quite cheap (CrashPlan is $100 a year). For unlimited space and computers, I'd say that's pretty good. Does anyone have experience with CrashPlan or any other of the above solutions?

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• kernel panic with exitcode=0x00000004 and no call trace

  - by litmusconfig

  A bit of background first - I'm trying to configure a MicroBlaze Linux (big-endian version) system on a Xilinx ML506 eval board. The goal is to use the second partition of a CompactFlash card attached to the Xilinx SystemACE controller. So far, root in initramfs works and after boot, I can mount and use said partition, no problem. But if I try to use it right from the getgo with the "root=/dev/xsa2" kernel command line parameter, the system hangs with [...] Freeing unused kernel memory: 143k freed Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004 And that's it - no regdump, no call trace, no further nothing from the serial console, even though kernel has been configured with debugging enabled. Now, I'm pretty new at this, so is there something else I should be doing to see something more informative from the kernel?

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• Amazon EC2 EBS volume scheduled backup/snapshots using puppet

  - by Ehrann Mehdan

  I am not a Linux admin, although I wish I was, and I have seen these questions Amazon EC2 Backup Strategy Amazon EC2 + EBS:: Regular backup plan? Simple Backup Strategy for Amazon EC2 instances / volumes? And this suggestion http://alestic.com/2009/09/ec2-consistent-snapshot I tried using command line + crontab (the command line works, but crontab for some reason, doesn't) But I'm still pretty lost, all I want is an automated, rolling backup of my amazon EC2 (EBS) data (by rolling I mean keep 3-4 weeks back, but delete old snapshots as new ones come for cost control) And as things usually go, if there is something that is hard and painful, someone creates a solution for it. My question is simple, is there a way using a tool like Puppet to do it without a painful learning curve? (or via other tools like http://ylastic.com) If yes, how?

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• ESXi and Windows Server CPU parking

  - by Chris J

  For those that don't know, CPU parking is a feature in recent Windows Server releases that allows Windows to pretty much drop a CPU core to zero use, and having nothing use it. It's been introduced as a power-saving measure. There's more detail about it here, amongst other places. However what I'm curious about is whether this matter on a virtualised guest - or is CPU parking more of a hindrance than a help, given that the physical CPUs are managed by ESXi, not Windows, and that a parked CPU is less likely to deal with traffic unless the scheduler deems there's enough work to unpark the CPU? I've not found anything about this - I do suspect it will be very much based on a given workload, but I've not seen any discussion (unlike, say, whether hyper-threading has any effect, which seems to be discussed regularly). Whilst I do understand the "test with your workload" I was wondering if there was any advice/guidelines out there that I've missed.

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• How can I clean up my bashrc/zshrc file?

  - by LuxuryMode

  Over time, I've added bunches of stuff to my PATH and it's lookin' pretty awful. How can I clean this up or what's the proper way to "reformat" all of this? export PATH="$PATH:~/scripts" export PATH="$PATH:~/Downloads/android-sdk-mac_x86/platform-tools/adb" export PATH=/opt/local/bin:/opt/local/sbin:$PATH export PATH="$PATH:~/Downloads/android-sdk-mac_x86/platform-tools:~/Downloads/android-sdk-mac_x86/tools:~/Downloads/android-sdk-mac_x86/platform-tools/adb" export PATH="$PATH:~/bin" export PATH="$PATH:~/bin/subl" export PATH="$PATH:~/.rvm/gems/ruby-1.9.3-head/gems/git-media-0.1.1/bin" export PATH=$PATH:$HOME/bin:/Users/me/Downloads/android-sdk-mac_86/tools export PATH=$PATH:$HOME/bin:/Users/me/Downloads/android-sdk-mac_86/platform-tools export PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/X11/bin:/.rvm/scripts/rvm:/.rvm/scripts/rvm:/~/Downloads/android-sdk-mac_x86/tools/android:/~/Downloads/android-ndk-r7/:/~/Downloads/android-sdk-mac_x86/platform-tools export CC=gcc-4.2 export PATH=~/Downloads/android-ndk-r7:$PATH ANDROID_HOME=~/Downloads/android-sdk-mac_x86 export PATH=${PATH}:$ANDROIDHOME/platform-tools

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• Juniper SSL-VPN Application Data encoding

  - by bong0

  Hi, I want to know how the request & response from the VPN server on e.g.: https://host.tld/dana/jw?con=1234567890&seqno=7 is encoded, the output seems to be binary. I assume it is the application data which gets exchanged with this request, am I right in this? If not, what else gets transferred over this, what is contained in the response? I'm pretty new to this product and want to understand how it works in deep. Thanks in advance folks.

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• Load Average runaway

  - by mewrei

  Is there any way to chase down lockups and runaway load averages? Every so often (pretty randomly) I'll get my load average spike up over 5 usually to around 10-15 and sometimes as high as 75 (dual core machine), and cause my system to lock for an indeterminate amount of time. The only thing I can possibly chase it to is using nVidia fakeraid (RAID-1) with JFS on top of that for my /home partition. Also I noticed that when my load averages spike, the power management system doesn't step up my processor speed from 1.6 to its maximum 2.13Ghz clock speed (not sure if this makes a huge difference with this problem). Any ideas?

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• IIS7 Recover Default Website

  - by rideon88

  So I deleted my default website by accident on a Windows 2008 server in IIS7. This is bad because I now lost my Exchange OWA virtual directories... users are not happy =(. Also lost my https certificate I'm pretty sure. So I'm hoping there is an easy way to recover all that stuff being that it's Windows 2008 and all... Any help appreciated. I have no idea where to start or how to recover any of this stuff besides creating a new site called default website and then hitting the MS Exchange manual on how to install OWA from scratch.

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• Need to open links in new tab in ie8 !

  - by BHOdevelopper

  I have a sidebar (right sided iframe) and when i click on a link in it, it opens a new window in IE8, (in firefox it open a new tab). What do i need to do to open links in IE8 in a new tab. I already set the Tools-Internet Options-Settings- 'Always open pop-ups in a new tab' and 'A new tab in the current window' open in new tab but still doesn't work. My links are pretty simple, what am i missing ? exemple: text. Also some site are saying to register Regsvr32 actxprxy.dll to fix this problem, still doesn't work. And i want this to work with a simple click, no 'right-click-open in new tab' option. I also hope i won't get the 'can't change how ie8 works' answer. ;)

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• Setting the viminfo path in gVim for portability (Windows)

  - by Will Vousden

  I'm trying to make my gVim installation as portable as possible, and in doing so I want to put the _viminfo file in the $VIM directory rather than $HOME. I'm pretty new to hacking vimrc configurations, but here's what I've been trying: let viminfopath=$VIM."\\_viminfo" execute "set viminfo='1000,n".escape(viminfopath, ' ') " Some other portability stuff. set nobackup set nowritebackup if has("win32") || has("win64") set directory=$TMP else set directory=~/tmp end This doesn't seem to be working, though; does anyone have any tips? Thanks!

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• Random servers in Citrix servers suddenly bluescreens (mostly 0x0000008e and 0x0000007e)

  - by Rasmus Rask

  I'm responsible for a Citrix Presentation Server 4.5 farm. Starting Friday 30. November, my servers started to crash randomly. So far we've experienced 80 crashes, so it's obviously becoming an increasingly big problem for us. I have 12+ years experience with IT, so I know the difference between 0 and 1, but I have a hard time cracking this. We've rolled back any recent changes I can think of for different groups of servers, but all groups still seem to crash. I don't have the skills to interpret the memory dumps to find the culprit. Has anyone encountered the same or a similar problem? - might be a generic Windows issue Other than executing "analyze -v" in WinDbg, how do I work my way through the memory dumps to see what actually triggered the BSOD? Any suggested steps in getting to the bottom of this? Any help is greatly appreciated. I can also provide links to kernel memory dumps or WinDbg output if necessary. Thanks! Problem description The majority of the STOP errors we encounter are: 0x0000008e KERNEL_MODE_EXCEPTION_NOT_HANDLED (50%) 0x0000007e SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (26%) 0x00000050 PAGE_FAULT_IN_NONPAGED_AREA (21%) We also see a few 0x0000000a IRQL_NOT_LESS_OR_EQUAL (3%). For both 0x0000008e and 0x0000007e bug checks, the exception code is 0xc0000005 (Access Violation). When opening dump files in WinDbg, most details are exactly the same, for all the 0x0000008e and 0x0000007e bug checks respectively: 0x0000008e Exception address: 0x808bc9e3 Trap frame: [varies] FAILURE_BUCKET_ID: 0x8E_nt!HvpGetCellMapped+97 Probably Caused by (IMAGE_NAME): ntkrpamp.exe 0x0000007e Exception address: 0x808369b6 Exception record address: 0xf70d3be0 Context record address: 0xf70d38dc FAILURE_BUCKET_ID: 0x7E_nt!MmPurgeSection+14 Probably Caused by: memory_corruption About 30% of the crashes happens between 17:00 and 19:00, which leads me to believe this tend to happen more often during logoffs. But then again, only ~15% occurs between 15:00 and 17:00. Summary of farm Citrix Presentation Server 4.5 R06 on Windows Server 2003 R2 SP2 All high priority patches, at least as of October installed Virtualized using VMWare ESX/vSphere 4.1 on HP Proliant BL460c G6 blade servers About 53 Presentation Servers in production, divided into three silos - only one of which, the largest, is affected 2 vCPU's (5 GHz reserved), 8 GB RAM (all reserved) for each Presentation Server Plenty of free disk space Very few printer drivers - automated deletion of non-approved drivers every night ~1.000 peak concurrent users, which is reached at around 10:30 (on weekdays) Number of sessions steadily decline between 15:00 and 19:00 to ~230

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• Mac OS X Server 10.6 - Apple's software mirrored RAID worth it?

  - by Arko

  Hi, I am installing an Intel Xserve (Quad core Xeon) with Snow Leopard Server (10.6) on two 80Gb 7200rpm SATA HDs. I created a mirrored RAID set using Disk Utility with those two drives, all went fine. I was then asking myself if this is really a good idea. I know that an hardware RAID system would be better, but what about this software RAID? Have you any feedback on this? Will it work fine if one HD breaks down? Does this affect performance? [UPDATE] In short: Hardware RAID is better than software RAID which is better than none. Thank you all for the answers, they were very helpful. Especially Gordon's script to monitor failures. As Apple's software RAID is pretty silent about a drive failure.

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• Unknown and strange RDP successful logins in EventViewer

  - by Yousef

  I have a Windows Server 2008 R2 with a valid IP, and recently I've found hundreds of unknown and strange RDP successful logins logged in EventViewer. Here are some details: They are not similar to normal logins, they happen like every second in a while even when I myself am logged in to the server. Event reads "Remote Desktop Services: User authentication succeeded" in "Microsoft-Windows-TerminalServices-RemoteConnectionManager/Operational", Event ID 1149 They seem to use some random user accounts without a domain name. I'm pretty sure that I don't have those local user accounts, and the server doesn't belong to any domain. Legitimate RDP logins have a valid user account and workgroup name, but those logins use unknown user names without any workgroup. Support staff couldn't help me and I'm very curious what are these strange logins. Are they some sort of brute force attack? so why does it read "Successful"? Am I being hacked? Why do they keep happening continually?

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• Problems with wireless file copy - hangs during copy

  - by Eran Kampf

  I have this problem on my home network where when I try to copy files via wireless connection, at some point the copy fails and the machine doing the copy loses connection to the network. I'm pretty much lost as to figuring out the source for the problem... Some more details that might help: It's not OS related. I have Windows 7 machines and Leopard machines and this occurs on both I'm using a 3com OfficeConnect router Wired transfer works fine Other programs that require heavy wireless traffic work just fine:streaming large HD movies, Xbox Live! ... I'm lost as to how to even begin trying to diagnose the problem so any tips are welcome...

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• Can't connect to MySQL server on '127.0.0.1' + Postfix

  - by Andrew Dakin

  I just installed Postfix and configured it to use MySQL. It wasn't sending any emails out after I did that so I checked /var/log/mail.log and it came back with this: postfix/trivial-rewrite[5283]: fatal: proxy:mysql:/etc/postfix/mysql-domains.cf(0,lock|fold_fix): table lookup problem postfix/cleanup[5258]: warning: AFCDC30437: virtual_alias_maps map lookup problem for [email protected] postfix/master[4761]: warning: process /usr/lib/postfix/trivial-rewrite pid 5282 exit status 1 postfix/proxymap[4126]: warning: connect to mysql server 127.0.0.1: Can't connect to MySQL server on '127.0.0.1' (110) In mysql-domains.cf I'm using: Hosts 127.0.0.1 I can connect to MySQL with this: mysql -u postfixuser -p But I can't connect this way: mysql -u postfixuser -h 127.0.0.1 -p maildbname Also when I run netstat -l it comes back with: tcp 0 0 localhost:mysql *:* LISTEN I've tried changing my hosts to: Hosts localhost But then I just get a socket error: postfix/cleanup[4870]: warning: connect to mysql server localhost: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' I also have this set up in the MySQL config file: bind-address = 127.0.0.1 I'm sure I'm missing something obvious, but I am pretty new to all this. Thanks! Andy

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• How to connect two monitors to a macbook pro?

  - by CIRK

  I have a 13" macbook pro, and I need much more space right now, so I decided to buy two smaller monitors. (these from LG). But I don't really know how will I connect them. I've seen some products like this Diamond BVU195, but it's not currently in stores in my country. I've found these Equip 128450 USB 2.0 Display Adapter DELOCK USB 2.0 to DVI/VGA/HDMI Adapter The second one looks pretty cool, but it says that Windows is a system requirement or what, so I'm not sure if it will work with mac os x? So how did you connected multiple monitors to you mac, and are these adapters the best choices, if yes then is there an OS independent one?

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• Software to Monitor the Stability of Internet Connection

  - by Ngu Soon Hui

  Thanks to the excellent internet connection service offered by one of the best ISP in the world, the internet connection in my area is very, very unstable. I can connect some of the time, but MOST of the time the connection will just drop off ( with the error message unable to resolve host) and after a few minutes, it will resume back. If I ping the domain name directly (i.e., ping www.google.com -t in cmd command), I will get a cannot ping message. Because of the flickery nature of the connection, it's pretty hard to prove to the support staff that internet connection is unstable. So I am thinking about using one software to record down the connection situation, so that I can present to the technical staff and make sure that they have no excuse not to fix my problem. Any such software available? Edit: Of course, such software should not record my browsing habit, and must be able to monitor and record the internet connection condition even when I am not online.

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• Should I be afraid of Linux server administration?

  - by markle976

  I've been trying to figure out what to focus on. I finally realized that the root of my quandary is that I am unsure about learning Linux server administration. I have been getting pretty good with PHP/MySQL and web development, but I am not very familiar with Linux. Is it hard to learn? What would I need to know in order to manage a LAMP stack? Also, which version is most used in enterprises? I think I have also hesitated to dive in because it seems like it is mostly used in small companies, but I guess that could be a good thing.

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• How do I get around "Access is Denied" [Number: 5 (0x80070005)], with IIS6/FastCGI and PHP 5.2.3?

  - by Evan Carroll

  I'm getting this error with IIS 6.0 (i assume), and PHP 5.2.3, and FastCGI FastCGI Error The FastCGI Handler was unable to process the request. Error Details: Error Number: 5 (0x80070005). Error Description: Access is denied. HTTP Error 500 - Server Error. Internet Information Services (IIS) Any ideas, nothing revealings in logs (other than 500 errors), this is pretty much all of I have to work with. The script has read and execute privileged for the internet guest account; and, I've added read/execute privileges to the whole D:\PHP. I followed this tutorial http://learn.iis.net/page.aspx/247/using-fastcgi-to-host-php-applications-on-iis-60/ to set it up. The only major diversion is I installed PHP to D:\PHP

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• Rsync from godaddy to OS X

  - by Ola

  I would like to use rsync to backup my website to my local computer (OS X). I started of with this guide and got pretty far. I use the following rsync-line: rsync -PzrlptgD --del --delete-excluded -r --rsync-path=~/bin/rsync user@server:~/ /local/backup/folder/ I wanted to use the -a option (same as rlptgoD) but it crashes as soon as I use the -o flag. receiving file list ... rsync: connection unexpectedly closed (8 bytes received so far) [receiver] rsync error: unexplained error (code 255) at /SourceCache/rsync/rsync-42/rsync/io.c(452) [receiver=2.6.9] If I skip the --owner flag it copies the files but I'm not really sure what difference it makes (I've tried to read up on it but found nothing) Should I just skip using the --owner flag? Or have I done any other mistake? Thanks in advance //OL

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