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• Mapping an sFTP connection to a Windows drive?

  - by Nicolas

  I'm looking for a way to map an sFTP connection to a Windows (Vista) drive. In other words, a tool that would add a new drive (let's say N:) to my computer, that would directly point to my remote server via sFTP. That way, "N:\my_dir\file.txt" would actually be something like "/home/user/my_dir/file.txt" on the remote server. Reading the file on Windows would download it, and writing content in it would upload it...network transfers being made via sFTP. I'm aware of Novell NetDrive, but it has various issues with long filenames, and seems to corrupt UTF-8 files content depending on the BOM. Do you know about any reliable alternative ? Thanks ! Edit : I have complete control of the remote server, except that it's remote enough for me not to be able to physically access it.

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• How do I recover lost/inacessible data from my storage device?

  - by TomWij

  What steps can I take to try to recover lost or inaccessible data from any storage device? Answers: This applies to any main storage devices; eg. internal/external hard drive, USB stick, Flash memory. The most important thing is to STOP using it, any type of I/O can ruin your chances of a recovery. Click here in case you suspect corruption or bad sectors. Click here in case you suspect mechanical issues.

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• How must I deal with anti-virus software on Windows 7

  - by Heather

  I know this question is looking like an easy question or not a question at all but it's not really easy question. I'm not related to security and anti-viruses and just don't trust every provided anti-virus. So first question is a real question - Is it OK (safe) to not use anti-virus at all. I know how to use firewall, usually I use only trusted connections and surfing trusted sites. My chances to get virus is really low. Even I've got a bit outdated PC and don't want to pay the performance for it. I can do monthly scans without having one installed - is it OK to be safe ? If not can you recommend a good free antivirus solution?

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• using nmap to guess remote OS and probe service details on a single port only

  - by WoJ

  I am looking at scanning with nmap a large network in order to identify the OS of devices (-O--osscan-limit) probe for details of a service on a single port (I would have used -sV for all open ports) The problem is that -sV will probe all the ports (which I do not want to do for performance reasons) and I cannot use -p to limit the ports to the one I am interested in as this impacts the OS fingerprinting. I could not find anything in the manual to limit the service probing. Thank you for any ideas (including other approaches outside of nmap, though I would prefer to stick to nmap)

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• Squid Proxy Server: limit total bandwidth

  - by Pitto

  Hello my dear friends! We have a marvellous squid proxy with dansguardian for filetering and they both work just great. Is there any easy way to limit the total bandwidth usage? I'd like to set the max amount of squid users internet use to 1200 since our total band is 2000 and I need the rest to ensure other services such as voip to work without hiccups related to huge downloads on the "internet side" of our connection and similar issues. I mean a total squid bandwidth limitation and not a user-based. Fair thanks to everybody.

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• What does advantages of WIM image that file based vs. ISO or another sector based images in Administrator

  - by saber tabatabaee yazdi

  answers of this question is very important to administrators to choose between Microsoft solution or other 3rd Party Tools. WIM solution is file based and others are sector by sector images like Acronis or other backup and clone tools like Norton Ghost or Cloning in vmware ESXi and etc. My question about the advantages of WIM to edit or deploy in Enterprise? to get agreements of managers to choose between these alternative decisions. Are we had any Key Performance Indicators in Change management? Are there any statistics about compares of these solutions? What Time is spend in any solotion to get image or change images or revert and apply images? Is it possible to change and modify images that made in All of these solutions as easy as in WIM file?

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• How do ulimit -n and /proc/sys/fs/file-max differ?

  - by bantic

  I notice that on a new CentOS image that I just booted up off of EC2 that the ulimit default is 1024 open files, but /proc/sys/fs/file-max is set at 761,408 and I'm wondering how these two limits work together. I'm guessing that ulimit -n is a per-user limit of number of file descriptors while /proc/sys/fs/file-max is system-wide? If that's the case, say I've logged in twice as the same user -- does each logged-in user have a 1024 limit on number of open files, or is it a limit of 1024 combined open files between each of those logged-in users? And is there much performance impact to setting your max file descriptors to a very high number, if your system isn't ever opening very many files?

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• How do ISPs/Colocation Facilities limit bandwidth for Ethernet Drops?

  - by Kyle Brandt

  I have switch providers and have run into some problems with bandwidth limitations. I have more bandwidth then before, but there are performance issues. The router is connected to a 100mBit port, but they limit it to arbitrary settings (in software I imagine). It seems when I go above the limit, the provider starts to drop packets beyond the limit (This is what they said they do as well). Is it possible the previous provider did something like queuing packets above the this limit before dropping them? Is anyone aware of not only what can be done, but what is typical? Also, is there anything I can do on my Cisco router to help this situation? It would seem I am pretty helpless if the packets are dropped before they reach my interface (The traffic that is high is inbound to my network).

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• Nexenta under KVM?

  - by Nick

  I have an Ubuntu Server running KVM. I'd like to get the benefits of ZFS so I was thinking of installing a virtual machine under KVM running Nexenta (or NexentaStor), allowing that virtual machine to have raw access to a couple of physical hard disks, and then having it share its file system with NFS so that Ubuntu can access it. I've never tried setting up KVM so that the virtual machine has access to physical drives. Does this sound feasible, and is there anything I need to watch out for? Has someone already documented something like this? Does Nexenta/ZFS function basically as well in the virtual environment as if they were running base bones? I can take a small performance hit, but I don't want it to not be as reliable because of the virtualization. Thanks.

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• How to Disable secondary drive from booting upon restart - Windows

  - by DevCompany

  I had a Windows 2003 Hard Drive on my server and it went bad so I installed a new clean hard drive and installed Windows 2008 R2 on the new clean drive. I moved the old 2003 drive to be used only for general storage on the same computer. It usually boots into Windows 2008 upon a restart, but just sometimes it starts trying to boot the old 2003 drive and causes boot issues(NTDLR Bootloader, and other errors), even though the order of boot preference is set to boot 2008, and NOT 2003. I need to know how to remove any old code that keeps this old drive as a bootable drive. I still want to use it as a secondary drive just dont want to have any boot code on it. hopefully my situation is clear for everyone to get a good response. Thank you...

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• Prevent Windows 7 from unpluging External HDD

  - by marverix

  I have installed Windows 7 as my media server. I pluged in 500GB external HDD via USB. I have changed power plan to Best Performance and changed advenced power settings to never turn off HDD etc. I even yesterday wrote powershell script (create and delete folder on this disk) and I have added it to harmonogram to run every 5 minutes starting from system boot. And nothing! Disk after some time (I realy can't say when) is turning off and Windows show "Unknown Device" in Device Manager. Then only system reboot or disk reboot helps. Any ideas how to prevent Windows 7 from stopping my external HDD? Cheers!

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• SSD install - what do I need to watch out for when reconfiguring SATA ports?

  - by tim11g

  I installed a Samsung 840 SSD in a Windows 7 machine. It seems to be working fine, but I'm not seeing the expected performance. The AS SSD benchmark gives 76 for read and 138 for write. At the upper left of the benchmark it says "pciide - BAD" and "31K - BAD". I'm assuming the "pciide BAD" means the motherboard (Gigabyte GA-P35-DS4) is configured as IDE emulation and needs to change to native SATA. I don't know what the "31K" refers to. The bios settings look like this: I saw this article that indicates that changing the SATA mode of the boot drive can cause problems (Blue Screen): Error message occurs after you change the SATA mode of the boot drive What is the correct procedure to change the SATA Mode without causing a system failure? Apply the registry change from the MSFT article above first, then reboot and change the SATA mode? Will the SATA mode change in the BIOS affect other drives?

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• Looking for something like Google's Picasa [closed]

  - by Skizz

  I almost like Picasa, but there are two issues that irk me and I wondered if anyone knew of an application that does what Picasa does but without the following problems: Network drives. Picasa is hopeless with network drives. Ideally, I'd like photos to be stored remotely and thumbnail databases to be stored locally with a client-server set-up to update client databases. The main aim is to get updates propagated to clients efficently, reduce network bandwidth and have quick browsing on the client. It needs to be snappy when used over a wireless network. This is just a minor point but the folder view looks awful, especially when it uses those tiny thumbnails. (Also, what is it with folders being drawn vertically. Having spent years looking at folders orientated horizontally, turning them on their side looks so wrong.)

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• How do I establish the network sharing to my WinXP server network drive from my Mac notebook?

  - by mobibob

  I have been able to connect to my WinXP server's shared drives by using Finder's Command-K to browse the network. Unfortunately, when the server gets rebooted, the connection drops and sometimes I cannot get reconnected. I have specified different protocols (afp / cifs / smb) and different login names (connect as...) with limited success. Once I find the right combination, I am good for a few weeks. Once, it seems as though I had to unshared and shared the drive to get it to work. Unfortunately, it is very frustrating, so I try multiple things at one time, so when I finally get to the success point -- I honestly don't know what worked. I followed Mac help, surfed for instructions, issues, etc., but nothing appears to be consistent. I would love for this thread to be the ultimate answer for all time! Can anyone help me? If my description or question need more detail, please ask away!

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• Debugging logrotate postrotate script

  - by robert

  Following is my logrotate conf. /mnt/je/logs/apache/jesites/web/*.log" { missingok rotate 0 size 5M copytruncate notifempty sharedscripts postrotate /home/bitnami/.conf/compress-and-upload.sh /mnt/je/logs/apache/jesites/web/ web endscript } And compress-and-upload.sh script, #!/bin/sh # Perform Rotated Log File Compression tar -czPf $1/log.gz $1/*.1 # Fetch the instance id from the instance EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.254/latest/meta-data/instance-id`" if [ -z $EC2_INSTANCE_ID ]; then echo "Error: Couldn't fetch Instance ID .. Exiting .." exit; else /usr/local/bin/s3cmd put $1/log.gz s3://xxxx/logs/$(date +%Y)/$(date +%m)/$(date +%d)/$2/$EC2_INSTANCE_ID-$(date +%H:%M:%S)-$2.gz fi # Removing Rotated Compressed Log File rm -f $1/log.gz The files are rotated, but shell script is not executed. I don't know how to debug the postscript. Is there any logfile I chek to see if there is any permission issues. If i directly execute the script from commandline file upload works. Thanks.

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• erratic audio levels on windows vista

  - by old retired dude

  I'm somewhat hard of hearing. I've been listening to my windows Vista machine with a pair of headphones so I don't annoy the others. I have 2 issues: 1) the volume varies enormously depending on the source. Having a windows alert occur while I am listening to a DVD or Youtube is a painful experience. Is there a preferred way to set all the different audio controls so I have a more constant volume? I already have lowered the volumes of the windows alerts. 2)Is there a way to limit the volume of my headphones to protect what is left of my hearing? Is there a software solution or should I be going for a hardware limiter? thanks retired dude

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• Windows 7 taskbar items not grouping properly

  - by Joel in Gö

  I don't understand the Windows 7 taskbar behaviour. For some programs it will not group the running instances, or will groups some of them but not all. I have set taskbar items to "always combine", but this has not helped. It seems to possibly be two issues: with an app that has a different taskbar icon when running than for its launcher; and for VisualStudio, when starting by double clicking a project it groups separately from when starting the IDE from the .exe. Is there any way to force the items to combine? I quite like the Win7 taskbar, and would like it to work consistently...

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• RDS Replication across regions

  - by Bryan Migliorisi

  We are using Amazon AWS for our web services but given the recent instabilities in their infrastructure, we are trying to figure out how to run our application across multiple regions for additional redundancy. Ideally, we would run our entire app in a active-active configuration in multiple regions but our main concern is that we are using RDS, which I understand cannot replicate across regions. One possible solution (though we have not tried or proven it would work) would be to do mysqldump or EBS snapshots every hour or so but this would mean that we would be forced to run in an active-passive configuration. Our data would be at most an hour behind. This carries its own issues around data synchronization when we failover and the master comes back up, so its not the best solution. Are there any proven solutions for replicating RDS across regions?

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• Port forwarding on D-Link DIR-615 super-slow, useless

  - by Jaroslav Záruba

  Hello I have replaced my old router with DIR-615 from D-Link, and now the port forwarding is so slow it makes the router practically useless. Accessing the router itself (admin UI) is without issues, no delay whatsoever. But when I try to access a service on another computer in the network the requests take minutes and minutes. (E.g. I can see source of my GWT-app main page, but loading additional CSS and JS files takes years.) If anyone could recommend any further diagnostics I should do to figure out what is happening it would be great. Few notes: happens with more services (web-app on Tomcat, viewing directory index via Apache) it does not make a difference whether the service is hosted on wired or wireless PC accessing the service on a localhost works fine turning off firewall on the target PC does not make difference either (makes sense) when I replace this router with the old one (both 192.168.1.1) everything works fine I see nothing suspicious in the router's log I believe I have the latest firmware (4.11) DIR-615 sucks, it already died once completely Regards Jarda Z.

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• what are security implications of running Ubuntu inside Windows 7?

  - by EndangeringSpecies

  I am thinking of switching to Ubuntu as a way of making web browsing more secure. So, suppose I will go the easy route and run Ubuntu as an app inside Windows and then run Firefox inside of that. What will this do to the security given the current threat environment? E.g. do most online threats nowadays target the browser and flash (which presumably would be safely sandboxed inside easy to wipe Ubuntu environment) or do they target the Windows TCP-IP stack where Ubuntu would give no protection? Well, most likely the above question does not come near to covering all the security implications of this setup :-), so please do discuss whatever other issues that may be relevant here.

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• 2 sited hosted in NGINX with separate SSL certs. IE8 posting invalid when starting at one site going to the other

  - by Dave Johnsen

  If users with IE8 go directly to www.xyz.com, SSL cert is fine. Users going directly to www.zyx.com have no issues with cert. If users start at one site and go to the other, they get invalid cert with xyz being used on zyx which should not be happening. Reading the forums NGINX has SNI enabled and I have the correct version of OpenSSL to be able to handle multiple certs. IE8 seems to be the issue but these are customer facing sites. Is there a fix to make NGINX work for the customers experiencing the issue.

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• linux shell, keep task alive for specified time

  - by liori

  Hello, I am looking for a tool to keep a task alive (restarting if necessary) for a specified amount of time (in seconds), and then kill it and stop. For example: keep_for 3600 rsync foo bar:faz should for try to synchronize a directory (restarting rsync in case of f.e. dropped connection), but explicitly kill rsync and stop respawning it after an hour. I tried to write a shell script for that, but it was surprisingly difficult to write, with lots of edge cases (like child process not getting killed, or shell escaping issues). So... maybe there already is a tool for that?

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• How can I run a Virtual Machine in Windows 8 Developer Preview?

  - by Marc Gravell

  Since having issues installing Ubuntu side-by-side with Windows 8, I thought I'd try running Ubuntu in a VM instead. However, VMWare player has no love for Windows 8 yet (invalid VM86 or something similar), and AFAIK the promised hypervisor options are not currently available for playing with. So: Are there any VM hosts that do work in Windows 8 Developer Preview at this point? (specifically for running Ubuntu) Alternatively, does Wubi work on Windows 8? It seems not; from Wubi: An error occurred: 'WindowsBackend' object has no attribute 'iso_path'

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• Completely clean previous Radeon drivers on Windows 7 64bit

  - by tomo

  Recently I replaced my old Radeon HD 2600XT to Radeon HD 6770 from MSI. I had strange problem that after installing the newest Radeon drivers they exist only until first reboot. After reboot my new card is recognized as an old 2600. I tried to unintall ATI/AMD software completetely from Programs/Features, then reboot, then untinstall driver from device manager, then reboot, then system showed that display driver is regular VGA (and oldschool 640x480 resolutions). Then to be double sure I executed DriverCleaner3 and Driver sweeper. After the restart I installed the newest drivers from amd site but after restarting the system recognizes card as 2600. I'm completely lost. Perhaps Win7 64bit caches somewhere drivers? Are there any issues regarding drivers-shadowing or 32/64 mirroring? Reinstalling the system is not an option.

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• Best Guest OS for running freeswitch under Proxmox

  - by Frank Waller

  We have a lot of asterisk Systems running on dedicated machines and would like to use freeswitch to replace a number of them. One of the advantages of freeswitch is supposed to be that it is doing much better in a virtualized environment than asterisk is. However I can find very little information about people using it in Proxmox containers. I would like to know if anyone has seen any ready to run proxmox images that include freeswitch so we can test a number of things without having to deeply go into creating our own. Or at least a clue to which system images/distro images we can use to quickly get it installed not having to deal with too many dependency or different Linux version issues. Just to be clear: It should be for a more or less current Proxmox and current freeswitch. I am not looking forward to use the KVM mode but would consider it, if it is otherwise ready to run out of the box. I would rather use a real OpenVZ based container. Thanks for anyone helping!

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