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• Best way to restrict FTP access to a single directory?

  - by John Debs

  I have a VPS running Ubuntu 10.04, and I'd like to give someone SFTP access to a single directory, but prevent them from seeing anything else on the system. What's the best way to pull this off? I considered removing "everyone" permissions from everything on the system, but that seems like a really blunt tool for this problem (and one that'll cause other issues) - I'm hoping there's a better option here. Edit: I appreciate the answers! (And I learned a bunch reading/researching through them). I ended up finding and using this guide from Linode as it spelled all the steps: http://library.linode.com/security/sftp-jails/

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• Best way to backup Active Directory with a single domain controller

  - by John Hall

  I have a domain with about 15 users and a single Windows Server 2008 domain controller. Some recent issues with my RAID controller have made me reconsider how I go about securing the AD data. Currently I run a System State Backup nightly. However, it seems that it is impossible (or at least difficult and unsupported) to restore that to any other machine than the one from which it was taken. Adding a second DC to the domain seems expensive and overkill for such a small network. Is there no other way to backup the AD data?

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• What is the correct way to distinguish services to which RADIUS request belongs?

  - by John

  If I have 1 generic RADIUS server and a number of clients (VoIP server, VPN server, WIFI access point) how to distinguish senders (NAS) of access and accounting requests? I didn't found anything helpful by reading all related RFCs, there just NAS-IP-Addess or NAS-Identifier is required, but this attributes usually represents IP address of the NAS and this address can not be used as a robust identifier, because it's often possible to fall into the case when 2 different NASes are running on the same server and this attributes can not be customized. Any ideas?

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• my HP desktop with Windows Vista wont boot

  - by John

  It continues to loop to a BSOD and I cant get a dos prompt or repair screen, I dont have recovery disks but I have brought up a window, black, with gray title bar that is labeled Edit Boot Options, below that it has Edit Windows boot options for: Windows Vista (TM) Home Premium Path: \WINDOWS\system32\winload.exe Partition:1 Hard Disk: 1549f232 and then it has a place to enter something starting with one of these [ and one or two lines down it has ] what do i enter in this space and is there something i can enter that would help solve my boot up issues

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• Making Ubuntu Linux pretty

  - by john

  Mac and Windows Vista have such pretty user interfaces with all the transparencies and stuff. Is there anything for Ubuntu Linux to improve the way it looks?

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• Does Xenapp require Windows Terminal Services (Remote Desktop) licenses?

  - by John Virgolino

  We have a Xenapp 5.x server running for over a year now. It does not have any purchased Terminal Services (Remote Desktop) licenses installed. It is running on a Windows 2008 Server box. I am aware that Terminal Services runs fine for about 3 months and then supposedly stops issuing licenses. On occasion, Xenapp stops working and we see lots of License errors in the event log, although not necessarily every time. In most cases, a reboot or 2 resolves the problem. We figured it was because of the lack of TS licenses. I spoke with Citrix and they said we had to have the licenses, but it begs the question that if we have to have the licenses, how does it work the majority of the time without them!!?? I have not received a straight answer yet and before I tell my client to shell out more money, I need to understand the technical reasoning for how this is actually working if we are breaking the rules here. We will buy the licenses if necessary, but there has to be an explanation for this. I am hoping the community can help where Citrix apparently cannot. Thanks much!

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• Arduino IDE "launch 4j" error

  - by John

  I have a computer running Windows XP. I am trying to run the Arduino IDE 0022. I double-click on arduino.exe, it waits about 30 seconds on the load up title screen, and then it gives me this error: Launch 4j: an error occurred while starting the application My only choice is to click "OK"; the error goes away, and the Arduino IDE closes. If I try to delete the Arduino files (to try overwriting with some different files), I get an error that doesn't allow me to do so: Cannot delete awt.dll: Access denied Make sure the disk is not full or write protected and that the file is not currently in use. The only way to delete the file is by restarting the computer. So something must still be trying to run after that first error. I have noticed in Task Manager that some Java programs are still running: javaw.exe (3 processes) I think this is a problem with Java, but I checked and updated all of my Java software and it is all up to date. I have looked on other forums for this issue and none of them seemed to help. From the forums I have tried: Different Arduino IDE versions Updating Java Opening arduino.exe as Administrator Nothing has worked. Anyone have any suggestions?

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• How to issue machine certificates to Android devices trying to connect to L2TP VPN (L2TP/IPsec with Certificate)?

  - by John Hendrix

  I are trying to find a way to connect Android devices to our VPN box running Windows Sever 2008. We manage to configure a couple Android devices to connect via PPTP. However, I would like to be able to connect using L2TP/IPSec with certificates instead. I've managed to export and apply the Enterprise CA's certificate on the Android phone, but are totally lost on how to issue a machine certificate to the Android phone. Is it even possible? If so, what are steps I should take to issue the machine certificate and enable the Android phone to connect via L2TP/IPsec with certificates? Thank you for your help!

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• computer reboots randomly, can't find ssd

  - by John Barry

  My comp's been restarting at random times, and when it comes back the SSD drive can't be found by the BIOS and it doesn't boot. Powering down and starting up again fixes it 90% of the time, with a second reboot occasionally required. Does not seem to be heat related; it's never happened with me actually on the computer. It has happened while acting as the squeezebox server, however. It's a Sandy-Bridge i7 arch if that helps. To add: I've also run Windows Memtest and it came back with no issues.

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• iptables redirect single website traffic to port 8080

  - by Luke John Southard

  My goal is to be able to make a connection to one, and only one, website through a proxy. Everything else should be dropped. I have been able to do this successfully without a proxy with this code: ./iptables -I INPUT 1 -i lo -j ACCEPT ./iptabels -A OUTPUT -p udp --dport 53 -j ACCEPT ./iptables -A OUTPUT -p tcp -d www.website.com --dport 80 -j ACCEPT ./iptables -A INPUT -m conntrack --cstate ESTABLISHED,RELATED -j ACCEPT ./iptables -P INPUT DROP ./iptables -P OUTPUT DROP How could I do the same thing except redirect the traffic to port 8080 somewhere? I've been trying to redirect in the PREROUTING chain in the nat table. I'm unsure if this is the proper place to do that tho. Thanks for your help!

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• Viewing local websites on my iOS device over Wi-fi

  - by John

  Trying to view some local html/css/js files in a mobile browser on my iOS device. Thought maybe file-sharing would be an option, and is, but I'm not completely satisfied with it. Any time I try to do the following an error occurs. Web sharing is on and available at http://192.168.1.101/~user but I have to manually copy the files in. If I try to symlink a folder in so that the address could be viewed at ''~user/some_dir by issuing $ ln -s /Users/user/dev/some_dir ~/Sites/ then I get a 403 forbidden error. I've tried to remedy this by modifying a user.conf file in /private/etc/apache2/ and using the following syntax: <Directory "/Users/user/Sites/"> Options Indexes MultiViews SymLinks AllowOverride None Order allow,deny Allow from all </Directory> but nope, still doesn't work. I get a 403 error. If I try to symlink each individual file in instead of using a directory as a sub-directory, same error. Any help would be greatly appreciated! I'd just like to symlink directories into the ~/Sites one and browse them on my iOS device over wifi. I'm on OS X 10.7 Lion trying to connect with iOS 5.

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• SQL Server Licensing

  - by John

  We are looking at moving our fractured code base that uses MySQL in some places and SQL Server in other places. I'm suggesting that for our purposes we don't need anything that MySQL can't do. The argument is that we have to have SQL Server anyway because we have Exchange and SharePoint. I always thought that SQL Server didn't require a separate license when using Exchange or SharePoint (WSS version). We are also using TFS. If there is a server product from Microsoft which requires the use of SQL Server then doesn't it come with some form of licensing for SQL Server? Can anyone lend some insight to this? Thanks!

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• Automatize uploading the YouTube

  - by John

  Here's the problem: I would like to keep lots of home made videos. Of course, they are subject to being lost, or somebody could steal the the computer, or water or fire could destroy them. Secondly, I have to plug in my hard drive every time I want to watch something, which I find slow and cumbersome. I was thinking that perhaps I could upload the videos to Youtube with the privacy set to invite only and then delete the video from the hard drive automatically. Could this be done?

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• Forms authentication for main site, Windows auth for subfolder

  - by John D

  Hi all, On my Windows 2008 R2 server with IIS 7.5 I would like to have my ASP.NET website running with forms authentication, while protecting a subfolder with the basic Windows authentication. I have done this on Windows 2003 with IIS 6 for years, but I simply can't get it to work with IIS 7.5. Your input would be highly appreciated :)

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• scsi and ata entries for same hard drive under /dev/disk/by-id

  - by John Dibling

  I am trying to set up a ZFS pool using 4 bare drives which I have attached to my Ubuntu system via a SATA hot swap backplane. These are Hitachi SATA drives. When I list the contents of /dev/disk/by-id, I see two entries for each drive: root@scorpius:/dev/disk/by-id# ls | grep Hitachi ata-Hitachi_HDS5C3030ALA630_MJ1323YNG0ZJ7C ata-Hitachi_HDS5C3030ALA630_MJ1323YNG1064C ata-Hitachi_HDS5C3030ALA630_MJ1323YNG190AC ata-Hitachi_HDS5C3030ALA630_MJ1323YNG1DGPC scsi-SATA_Hitachi_HDS5C30_MJ1323YNG0ZJ7C scsi-SATA_Hitachi_HDS5C30_MJ1323YNG1064C scsi-SATA_Hitachi_HDS5C30_MJ1323YNG190AC scsi-SATA_Hitachi_HDS5C30_MJ1323YNG1DGPC I know these are the same drives because I wrote down the serial numbers, and all the other drives in this system are either Seagate or WD. The serial number for the first one, for example, is YNG0ZJ7C. Why are there two entries here for each drive? More to the point, when I create my ZFS pool which one should I use; the scsi- one or the ata- one?

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• How to use proxy on Virtual Box (Windows XP)

  - by John

  I'm not exactly the most tech savy so please bear with me. I am trying to connect through a proxy with my Virtualbox accounts. Initially I wanted to just set the browsers in each virtualbox under a proxy but my boss said that it can probably be done right off the bat under the virtualbox accounts itself. Could anyone guide me on how to do this? All the instructions online state that their should be a proxy setting in preferences however all I see is a Network Adapter tab. Thanks!

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• Folders open in new windows when set to use same window

  - by John Mo

  Windows 7: I have the Browse folders option set to "Open each folder in the same window" in the Folder Options dialog. Double-clicking folders opens a new window. Please, make it stop.

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• Force www. on multi domain site and retain http or https [closed]

  - by John Isaacks

  I am using CakePHP which already contains an .htaccess file that looks like: <IfModule mod_rewrite.c> RewriteEngine on RewriteRule ^$ app/webroot/ [L] RewriteRule (.*) app/webroot/$1 [L] </IfModule> I want to force www. (unless it is a subdomain) to avoid duplicate content penalties. It needs to retain http or https Also This application will have multiple domains pointing to it. So the code needs to be able to work with any domain.

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• How i can apply database changes and application changes to my live ap.net mvc3 web application

  - by john G

  i have published my asp.net mvc3 that uses entity framewrok with database-first approach to the live server using IIS 7. then i modify the database any update some views, models and controllers in the vesion at my development environment also i have fixed some defects. So which tools I should use to update my live version to be similar to the version at the development environment, while not loosing any of the data already stored in the database, and is there any tutorials that can help me in implementing similar tasks. BR

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• ESX Firewall Command Troubles

  - by John

  Hi, I am working on creating some firewall rules to stop some of the SSH brute-force attacks that we have seen recently on our ESX server hosts. I have tried the following rules from the CLI to first block all SSH traffic and then allow the two ranges that I am interested in: esxcfg-firewall --ipruleAdd 0.0.0.0/0,22,tcp,REJECT,"Block_SSH" esxcfg-firewall --ipruleAdd 11.130.0.0/16,22,tcp,ACCEPT,"Allow_PUBLIC_SSH" esxcfg-firewall --ipruleAdd 10.130.0.0/16,22,tcp,ACCEPT,"Allow_PRIVATE_SSH" However, these rules are not working as intended. I know that if you do not enter the block rule first, then the allow rule will not be processed. We are now having the issue where the first entered allow rule is being ignored such that the block rule works and the last entered allow rule works. I was curious if anyone had any ideas on how I could allow a few different ranges of IP's with the esxcfg-firewall --ipruleAdd command? I am at a loss and am having a hard time locating examples or further documentation about this. Thanks in advance for your help with this.

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• Centos 5.5 install PearDB

  - by John Gardeniers

  Disclaimer: I use Linux for some jobs but I am not a Linux admin. I have a Centos 5.4 machine which performs some server duties and doubles as a web site development machine. PHP 5.3.3 was installed from RPM with the --without-pear option. I now wish to use PearDB but can't figure out how to install it. If I run yum install php-pear-db, it comes back with Error: Missing Dependency: php = 5.1.6-27.el5_5.3 is needed by package php-devel-5.1.6-27.el5_5.3.i386 (updates). The only RPM I've found that looks like it might be close currently has a dead link, so I can't even try that. What would be the best way to go about this? Is there a way to reinstall from the RPM and include pear? Can I install the dependency without breaking the current installation? Should I try to uninstall the original PHP and reinstall it from source, complete with pear? I thought this might have been an SU question but the FAQ over there suggests otherwise.

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• Postfix filter messages and pass to PHP script

  - by John Magnolia

  Each time a user signs up to our website through an external provider we get a basic email with the body contents containing the user details. I want to write a personalised automatic reply to this user. The actual parsing of the email body and reply via PHP I have already wrote but how do I go about configuring this from postfix? At the moment it is configured using a roundcube Sieve plugin where the email gets moved into a folder "Subscribe". Is it possible to create a custom action here? Debain Squeeze, Postfix and Dovecot

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• Seeing double-cursor in 'recursive RDP'

  - by John

  I'm using a Virtual PC VM on my PC to connect to a remote PC using RDP over a VPN. It works just fine except that in the RDP session, I often see a double mouse cursor... I get a standard mouse-arrow and the context-specific cursor such as a caret or hourglass. It's not a big problem but rather annoying and I wondered if there's any way to fix it, or at least understand where it comes from? Is it because I'm effectively running one RDP session from inside another? My host PC runs W7, my local VM runs XP, and the remote PC access using RDP is W7. Thankyou for any help.

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• How to throw a 404 error from htaccess?

  - by John Isaacks

  Everything I find seems to be about created a custom 404 page. That is not what I am trying to do. If I want to block access to a page I can do this in htaccess: RewriteRule pattern - [F] However, "Forbidden" hints that the page does exists. I want the page to appear to not even exist. So I would like to give a 404 error instead of a 403. Then have it render whatever 404 page would render if the resource really wasn't there. How can I do that?

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• "Cannot allocate memory " error whle copying data from window to ubuntu

  - by John

  I have Ubuntu 9.10 installed inside VM of server 2008. WHen i try to copy the data from the network and paste insid ethe Ubuntu it says error called "Cannot allocate memory " I have 3GB RAM attached to the Ubuntu I tried above suggestion but still im unbale to copy file from my host machine i.e. Windows XP to my Ubuntu machine ( which is at Virtual Machine) Im trying to copy jdk-1_5_0_22-linux-i586.bin file whose size is 47.4 MB Is there any other work around for this problem???? I tried Set the following registry key to ’1': HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\LargeSystemCache and set the following registry key to ’3': HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters\Size but still im unbale to copy file from my host machine i.e. Windows XP to my Ubuntu machine ( which is at Virtual Machine) Im trying to copy jdk-1_5_0_22-linux-i586.bin file whose size is 47.4 MB Is there any other work around for this problem????

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