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• FTP account ownership on vhost directory makes Apache not run website correctly

  - by CodeShining

  I've purchased a virtual server, where I'm given of a non-root sudo-enabled user. Actually I do need to create an FTP account that's not that sudo-able account, so I created a no-login account just for that purpose. I've set up VSFTPd correctly, also enabling the "userlist" feature, to specify which user are permitted to use FTP. Then I created an empty directory under my sudo-able account, and I gave ownership permissions to the second account, so to make it more easy to understand, let's say the main account (the one I do use to manage my VPS) is called ubuntu and the FTP-user is named ftpuser, I created a directory /home/ubuntu/mywebsite giving the ownership to ftpuser:ftpuser. Then I uploaded a worpdress website, whose default permissions are 755 and 644. The issue is that Apache is not given of any privilege to run the website. How can I make the website run properly, and which is the most secure? Should I run that virtualhost with another user (if it's possible)? Should I force the FTP user to use the www-data group (if that's possible) and run with permissions like 775 and 664? How can I solve this issue? Any help is appreciated, I'd like to run it using the default permissions, so any update won't break up anything (because of permissions reset).

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• Hyper-V and attaching physical disks [migrated]

  - by Mike Christiansen

  So, I'm looking at rebuilding my home server. My current setup is the following Windows 7 Ultimate 1TB Boot Drive (my smallest drive) Windows Dynamic Spanned volume, continaing 1x 1TB drive, 2x 2TB drives, totalling 5TB. I am upgrading to a hardware RAID controller, and I would like to run Hyper-V server core. However, I want to retain the ability to join my "file server" to a homegroup, so I must use Windows 7. I know VHDs can only be like 127GB or something, so I obviously need to directly connect disks to my Windows 7 machine. Here is my plan: Server Core 2008 R2 (Hyper-V) 1TB Boot Drive (storing VHDs for boot drives of VMs) - possibly in a RAID 1 with my other 1TB drive 5x 2TB drives (1x 2TB drive hot spare), totalling 10TB, directly attached to a Windows 7 VM, for use of homegroup for this array. In the past, I directly attached the windows dynamic volume to a Windows 7 VM, and performance was abysmal. The question is, with hardware RAID, will it really make that much of a difference? Server specs: Intel Core 2 Quad Q9550 2.83GHz Asus Maximus II Formula (PCI-E x16) 8GB DDR2 RAM PC2-6400 (Yes, I know its a bit out of date)

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• ubuntu suspend works, but then immediately starts

  - by Yoav Aner

  Having a strange problem after upgrading from Ubuntu 11.04 to 12.04. Previously I could suspend just fine, the computer will switch itself off. Pressing the ON button will switch it on and it will resume. After upgrading to 12.04 however, when I suspend it does (almost) the same, turns itself off, but about 2 seconds later, the computer turns itself on again, and it goes back to life from suspend. I haven't changed any of the hardware or BIOS and it was working before just fine. Also tried every possible switch of pm-suspend ; setting acpi_sleep=nonvs in /etc/default/grub and also this suggestion but nothing seems to make a difference... UPDATE: just tested suspend using the 12.04 liveCD and it was working perfectly fine... but when I boot normally it doesn't. ANOTHER UPDATE: After re-installing I noticed that I can suspend. However, after restoring my home folder - the strange suspend problem happens again. I then created a new user account. When I login to the other account I can suspend without a problem... So This seems specific to my account only. How/What can cause this in my own user settings?

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• Shortcuts located in "D:\Program Data\..." not working even though they're pointing to the right targets (Windows 7)

  - by Kevin

  I just made a fresh install of my windows 7 home premium using my laptop's recovery disks (HP Pavilion dv6-2151cl) using minimal settings. After install, I set up "Program Data" and "Users" to my D partition to save space changing the folders in the registry. Then I updated windows (including W7 SP1), and installed all other programs. After installing all other programs I noticed that the icons of all new programs (not included in the windows install) in "All Programs" had a blank sheet as icon and they don't do anything. Looked into "D:\Program Data\Microsoft\Windows\Start Menu\Programs" in the windows explorer and the same is true there. All the shortcuts in C: and "D:\Users..." work both in the "Windows Explorer" and "All Programs". Also I noticed that the shortcuts do display the right icons inside the "open" dialog boxes. And if I copy the shortcuts in "D:\Program Data..." to the desktop they also work as expected. I checked file association for .lnk and it was OK, but also tried the registry fixers for this file association and they had no effect. There are no missing programs that I can tell in the "All Programs" menu, the just don't do anything if they lay in "D:\Program Data...". Any thoughts on how to make Windows 7 treat shortcuts in "D:\Program Data..." as they should?

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• "Error 5: Access denied" when installing programs with UAC turned off

  - by Aero

  I'm having some trouble installing msysgit 1.7.3.1preview on Windows 7 Home Premium. I downloaded the setup file from the Google Code and then ran it. Upon running, I got the following error: I have tried downloading and running different older versions of msysgit with no luck. For the record, I have administrative privileges and there are no other user accounts on this Windows machine. Any help would be greatly appreciated. Thanks. UPDATE: I have managed to semi-fix this problem. I turned on User Account Control back to the default setting and and then ran the setup file as an administrator. I successfully managed to install Git. However, this means I have to keep UAC turned on whenever I want to install a new program (I realised that it persists over all programs; not just Git). So it's quite a nuisance. If anybody knows how I could keep UAC disabled whilst still being able to install programs without running their setup files as an administrator, I would be eternally grateful. UPDATE: I have changed the question title to better suit the new situation.

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• Configuring two nearby WLANs: should I use the same ssid?

  - by Rory

  I'm configuring a home network for basic internet use (ie don't really need connectivity between workstations on the network). My brick walls mean a single wireless router doesn't provide good coverage throughout the house, so I have purchased two powerline adapters and now have the incoming modem/wireless router at one end of the house plugged into a powerline adapter, and at the other end of the house the other powerline adapter plugged into another wireless router. Currently the two wireless networks have different ssids. (The powerline adapters only do power-Ethernet; they're not wireless access points themselves.) This works well, except when I move between rooms and would ideally like my devices (iPad, phones, laptops) to switch from the weak to the strong signal. Sometimes there's enough signal that they hold on to the weak connects instead of switching to the strong one. Should I name the two networks the same ssid, and if so what is the actual effect? Do the signals get confused, is the bandwidth affected, will this help my devices seamlessly move from one to the other, or is the ssid just a cosmetic thing that actually doesn't have any impact on this situation? Are there any other settings that I should configure to make my setup optimal?

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• Apache memory allocation error message

  - by la_f0ka

  I'm trying to set up a medium sized Drupal 7 website on my miniserver but I keep getting a 500 error message. This is what I found in Apache's error log: [Wed Sep 12 15:02:04 2012] [notice] SSL FIPS mode disabled [Wed Sep 12 15:02:04 2012] [warn] No JkShmFile defined in httpd.conf. Using default /usr/local/apache/logs/jk-runtime-status [Wed Sep 12 15:02:04 2012] [notice] Apache/2.2.22 (Unix) mod_ssl/2.2.22 OpenSSL/1.0.0-fips mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 mod_jk/1.2.35 configured -- resuming normal operations [Wed Sep 12 15:02:07 2012] [error] [client 89.16.136.28] /usr/bin/php: error while loading shared libraries: libkrb5support.so.0: failed to map segment from shared object: Cannot allocate memory [Wed Sep 12 15:02:07 2012] [error] [client 89.16.136.28] Premature end of script headers: index.php [Wed Sep 12 15:02:07 2012] [error] [client 89.16.136.28] /usr/bin/php: error while loading shared libraries: libkrb5support.so.0: failed to map segment from shared object: Cannot allocate memory [Wed Sep 12 15:02:07 2012] [error] [client 89.16.136.28] Premature end of script headers: index.php [Wed Sep 12 15:02:07 2012] [error] [client 89.16.136.28] File does not exist: /home/brighton/public_html/favicon.ico [Wed Sep 12 15:02:07 2012] [error] [client 89.16.136.28] /usr/bin/php: error while loading shared libraries: libkrb5support.so.0: failed to map segment from shared object: Cannot allocate memory [Wed Sep 12 15:02:07 2012] [error] [client 89.16.136.28] Premature end of script headers: index.php I contacted support and they just told me I should just upgrade my package (right not I have a 512Mb account), but I am not sure if I'm buying it... even if I'm trying to access a file which only contains phpinfo(); I still get the 500. Any help would be much appreciated, and if there's need of any other information please let me know and I'll update the question. I compiled apache with tomcat because I intend to use Solr... not sure if this is relevant or not.

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• Intel HD Graphics vs NVIDIA Quadro FX 380 PCI-E

  - by Michael

  I recently purchased an Acer Veriton which has an i5-650 processor, Windows 7 Pro (64 bit) and Intel HD Graphics listed as the video card. I also purchased a PNY nVIDIA Quadro FX 380 PCI-E card for improved picture and home video viewing and editing. I have already replaced the original 300 wattt power supply to a 430 watt Antec Truepower I had on hand and boosted the RAM to 8 gigs from the original 4. Question 1) Am I getting any improvement in visual quality or system speed with the Quadro or is it a waste of money and I should just save up to buy a bigger video card? This card was on sale for $115. If I am getting improvement then I need to ask another question. Question 2) Instructions for the Quadro installation are as follows... 1--Uninstall the existing VGA driver. -Remove the existing Display Driver via "Add or Remove Porgrams". -Shut down your computer. 2--Remove your Existing Graphics Board (or Disable Integrated 3D Graphics Controller). skipping instructions on how to remove existing graphics board -Systems with integrated (also know as on-board) 3D graphics may require you to disable the integrated 3D graphics system. Consult the owners or vendor manual that came with your PC on how to properly do this. So is the Intel HD Graphics considered a 3D graphics controller? If so should I just contact Acer or can anyone give me instructions? Thanks in advance for any help.

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• sharing a USB printer in SOHO environment [migrated]

  - by Registered User

  Here is a situation I am facing, there is USB printer which works only on a Windows XP machine, there are other devices in LAN it is a Small Office Home Office environment. How can this USB printer attached to Windows XP machine be shared so that other laptops or users in Network who have Windows 7 or Linux on their laptops can use this printer. The printer model number is Canon Laser Shot LBP-1210 http://www.canon-europe.com/For_Home/Product_Finder/Printers/Laser/LaserShot_LBP1210/index.asp a print server is not available to me I need to make it work in this situation only.What can I do? the clients are unable to connect to this.It is not a network or TCP/IP printer If a from Windows 7 machine some one wants to use this printer so that he can take a print he gets an error while adding the printer to his machine which is a Windows 7 machine (where as the printer is USB printer on Windows XP machine) Start--->Devices and Printers---> Add Printer---> Find Printer by name or IP address--->Selected a shared printer by name-->\\PC-Name-printer3 and select browse it gives a message Windows can not find a driver for Canon LASER SHOT LBP-1210 on the network what does this mean do I need to install some kind of software at client machine or on the machine where printer is present?

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• Cloning a failing disk (Win 7)

  - by daveh551

  I have a Windows 7 machine with several partitions on a 1.5T drive. Windows has been complaining about disk errors and imminent failure, so I have purchased a new 2TB drive. The failing disk has not completely failed, and, in fact, I was able to boot Windows from it (after a couple tries) and examine the SMART logs - the only RED item was 1 sector being reallocated. But when I try to Clone it to the new Drive using Acronis True Image Home (2010), True Image can see the drive, the partitions, and the contents, but when it goes to actually do the clone, it says "Failed to move. Make sure the destination disk is not smaller than the source disk, and that there are not errors on the disk" (or something like that). What are some other options for simply cloning the failing drive. I'd like to clone the entire disk, but am willing to do it partition by partition if necessary. Was this a known failing of the 2010 edition of ATI, or is it really something hosed in my system. Would upgrading to the 2012 edition be likely to work any better? (I'd download the trial and try it out, but if I remember right, the cloning operation is disabled in the trial version), and I don't have enough free disk space to make an entire image.) What are some other cloning software packages if ATI won't work? Note that I'm only looking to clone the disk, not make an image as a back up - I use Ghost for that, and can fall back to that if I have to. It looks to me like CloneZilla would do the job. Any recommendations? Thanks, and if this duplicates other questions, I apologize.

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• Can I use HP Recovery Discs for a different hard drive capacity and make?

  - by Fasih Khatib

  About two years ago I created HP Recovery Discs (3 of them). Now my hard drive has crashed and new one is still a week from delivery. I was reading up on how to reinstall the genuine OS using the Recovery Discs as i was not given any Windows 7 installation discs. I did my bit of research after getting answers from the community on what these discs do and found out on other sites that people experience issues when recovering their OS from the disc. Especially when they change the make or capacity of the harddrive. Unfortunately I had to change the make as the hard drive that came built in has gone out of production. This question is just a part of my checklist to avoid problems when recovering the OS. I have: HP DV4-2126TX (available only in India I guess) I had: Seagate Momentus 320 GB I ordered: Western Digital Scorpio Black 500 GB Windows 7 Home Premium 32-bit Is there a possibility to encounter any problems due to the changed capacity and make? I only want my genuine OS and drivers – not my data. I was told that Disc 1 contained the OS and drivers, and the rest of the discs contained data. I couldn't verify that.

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• Switch between network configurations via command line in fedora 17

  - by Mike Fairhurst

  I have two different setups I use on my work laptop; one enables synergy over an ethernet ssh tunnel with my work computer on the local network, and the other opens an HTTP tunnel to my work computer from outside the network. When I have wifi enabled at work, my laptop seems to use it by preference. This makes synergy run incredibly slowly. At home I must use wifi. I have scripts that begin my ssh tunnels, add my ssh keys, and starts up other programs like synergy, and close themselves when I shut my laptop. However, every day I have to start out my routine by opening my gnome-control-center and turning on my ethernet. I have tried route add and ifup, none of it works, so I dove into gnome-control-center's source code and found that it enabled the connection by libnm's method nm_client_activate_connection with some libnm specific structs that I am having trouble tracking down. I'm not much of a c programmer, and I'm not familiar with either GTK or libnm. Does anybody know what fedora 17 does with ethernet connections to fully enable them? Or does anybody know what libnm does to fully enable an ethernet connection? Do I have to write a c script to run libnm for me to fully emulate whatever gnome-control-center is trying to do?

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• Encrypted Windows 7 & Linux Advice Wanted

  - by Miles

  I would like to set up my laptop to dual boot Arch Linux and Windows 7 with file sharing and encryption. Just wanted some advice on going about this because I have not dealt with encryption nor file sharing. I have two 500GB hard drives, and this is my plan: Install Windows 7 across both hard drives Use a live CD to wipe out Windows boot loader and replace with Grub Legacy Use live CD to wipe out second hard drive and re-size the Windows partition located on first hard drive Install Arch Linux along side with Windows 7 on first hard drive, all remaining space goes to home folder as ext2 Install truecrypt and ext2fsd Concerns: Is this the most efficient way to share files between both OSes? Or should I just be using NTFS to store all my data? How would the file permissions work when sharing files between Windows and Linux? Is there a high likley hood of corruption, and what is the ease of backing up files from an encrypted disk? Anything I should look out for, conflict between Grub and Truecrypt? Thank you for any advice, and feel free to post any links you might find useful to me. I am trying to plan this out so I can minimize downtime as I do not want to spend more than a night on this, nor do I want to run into a major problem some time in the future.

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• Thunderbird: export email account settings

  - by zpea

  I'd like to create a new profile for Thunderbird using the same mail accounts I already configured in my old profile. As it is quite a number of accounts, it would be great to have a way to export/import them instead of writing down the settings just to fill in again in the new profile. Using web search and search here I mainly found following suggestions that do not match what I need: Copy the whole profile: Not possible for me as I don't want to copy other settings, the downloaded mail data etc. and the old profile broke when running out of space in the home folder anyway. Use mozBackup: There seem to be several programs by that name (forks?). In any case, it's Windows-only and hence no option (I am mostly on Linux and prefer platform-independent solutions anyway) Use accountex: Seems to do what I want, but it is not compatible with current Thunderbird version (supports only up to version 3.1) Posts with various tips from 4 years ago: Top results in the web search with the G. But they do not work in current versions of Thunderbird either. Did I overlook anything? After all, it doesn't sound like I was looking for something nobody ever looked for.

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• Linux: Encryption of a physical LVM volume doesn't imply encryption of its logical subvolumes?

  - by java.is.for.desktop

  Hello, everyone! I installed OpenSuse one year ago on my notebook. I created all partitions except /boot inside an LVM partition. I enabled encryption for it during setup. The system asked me a password on each boot later. Everything seemed fine... But one day I wanted to cancel the boot process and did it with SysRq REISUB. During entering this combination, the system suddenly continued to boot without any password being entered. I had no /home and no swap, but / was mounted! I checked multiple times, it was inside an "encrypted" physical LVM volume. Later I found out that OpenSuse can't encrypt / at all. There is an option to enable encryption for each logical volume, and indeed it fails for /. Later I tried Fedora. The options during partitioning were misleading by same means. I could enable "encryption" of a physical volume and each logical subvolume. With the exception that Fedora actually allowed to encrypt /. Question: What's the point of setting up "encryption" for a physical LVM volume, when it doesn't imply (real) encryption of its logical subvolumes? Did I get something wrong in this whole concept?

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• Plug-in device to front USB computer *sometimes* restarts

  - by Mark A. Nicolosi

  I've got a strange problem that very occasionally (maybe once a month) when I plug-in something to the front USB on my computer, the computer suddently restarts. This also happens when I touch the front USB ports sometimes. This has been going on for a few years and a lot of the components in my PC have changed. I thought it was my home wiring, but I moved last year and it still happened. I thought maybe it was the motherboard, but that was upgraded 9 months ago and it still happens. I thought it was my case, but I changed that recently and it still happens. I thought maybe it was my PSU, but I upgraded that yesterday and it still happens. I'm pretty sure this is an electro-static thing, but I thought that modern computers have protection against this sort of thing. Maybe I should move my case off the floor (carpet) and stop wearing songs all the time. Edit: Just to clarify this is a computer that I built. The components have been upgraded throughout the years and it's not much the same computer anymore. This doesn't happen very often, but it is annoying, because I don't know what the cause is. Anyone have any ideas?

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• Diagnosing RAM issues

  - by TaylorND

  I have an old Acer Aspire T180 desktop. The specs are as follows: AMD Athlon 64 3800+ 2.4GHz 1GB DDR2 SDRAM 160GB DVD-Writer (DVD±R/±RW) Gigabit Ethernet 17" Active Matrix TFT Color LCD Windows Vista Home Basic Mini-tower AST180-UA381B According to the information in the computer's documentation the computer comes with 1 GB of RAM. It has two DDR2 SDRAM sticks. I used to have Windows Vista installed. Then I removed it and install Windows 7, and now I have since removed Windows 7 and installed Windows XP. According to Windows XP with both RAM sticks in the computer has 768 MB. Isn't this supposed to be 1 GB of RAM or 1024 MB of RAM? Is the amount of RAM installed only partly used by the Operating System? Is there's something I'm missing? If I remove either one of the RAM sticks I'm left with 448 MB of RAM. These numbers don't seem to add up. If each of the RAM sticks contains at least 448 MB of RAM shouldn't they (both being in) provide 896 MB of RAM. Even then, isn't that less than a GB of RAM? I'm not too experienced in hardware so I thought this would be the best place to ask. As a follow up question, is the RAM I have enough to run/multitask with Windows XP efficiently? I plan to do a lot of computing with the system (although not gaming), should I invest in more RAM?

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• Strange ssh login

  - by Hikaru

  I am running debian server and i have received a strange email warning about ssh login It says, that user mail logged in using ssh from remote address: Environment info: USER=mail SSH_CLIENT=92.46.127.173 40814 22 MAIL=/var/mail/mail HOME=/var/mail SSH_TTY=/dev/pts/7 LOGNAME=mail TERM=xterm PATH=/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games LANG=en_US.UTF-8 SHELL=/bin/sh KRB5CCNAME=FILE:/tmp/krb5cc_8 PWD=/var/mail SSH_CONNECTION=92.46.127.173 40814 my-ip-here 22 I looked in /etc/shadow and find out, that password for is not set mail:*:15316:0:99999:7::: I found this lines for login in auth.log n 3 02:57:09 gw sshd[2090]: pam_winbind(sshd:auth): getting password (0x00000388) Jun 3 02:57:09 gw sshd[2090]: pam_winbind(sshd:auth): pam_get_item returned a password Jun 3 02:57:09 gw sshd[2091]: pam_winbind(sshd:auth): user 'mail' granted access Jun 3 02:57:09 gw sshd[2091]: Accepted password for mail from 92.46.127.173 port 45194 ssh2 Jun 3 02:57:09 gw sshd[2091]: pam_unix(sshd:session): session opened for user mail by (uid=0) Jun 3 02:57:10 gw CRON[2051]: pam_unix(cron:session): session closed for user root and lots of auth failures for this user. There is no lines with COMMAND string for this user. Nothing was found with "rkhunter" and with "ps aux" process inspection, also there is no suspicious connections was found with "netstat" (as I can see) Can anyone tell me how it is possible and what else should be done? Thanks in advance.

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• DFS Root namespace is RDWR for all users

  - by Patrick

  We have an existing DFS Replication and Namespace group that we use to serve the company's files. This has been operating fine for us for some time now, and continues to do so. however a situation arose yesterday afternoon that has led us to be stumped. The problem is that we have our name space presented as : \\domain.co.uk\public\[8 or 9 folders that are mapped to the users in the business] We had a problem this morning that meant that a number of users started mapping their AD Home Drive directly to the \\domain.co.uk\public directory and we found that they had read/write. This rapidly became a problem as a at least one director saved some moderately sensitive documents in there and basically anyone could read them. I've tidied up that specific problem with some deft scripting and a slight modification of group policy. However I would like to make \public read only, the trouble is I can't work out where the ACLs for that folder would be held. All the folders that are presented as \\domain.co.uk\public\[folder] are 'real' folders on logical volumes on our DFS servers so are secured with groups that are applied via the 'security' tab. I'd like to do the same on \public but I can't find it. I have looked through amongst other things \Sysvol\domain.co.uk but can't find it and after a lot of clicking and a bit of reading I can't see how to lock it down. Any thoughts?

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• Restricting access to one controller of an MVC app with Nginx

  - by kgb

  I have an MVC app where one controller needs to be accessible only from several ips(this controller is an oauth token callback trap - for google/fb api tokens). My conf looks like this: geo $oauth { default 0; 87.240.156.0/24 1; 87.240.131.0/24 1; } server { listen 80; server_name some.server.name.tld default_server; root /home/user/path; index index.php; location /oauth { deny all; if ($oauth) { rewrite ^(.*)$ /index.php last; } } location / { if ($request_filename !~ "\.(phtml|html|htm|jpg|jpeg|gif|png|ico|css|zip|tgz|gz|rar|bz2|doc|xls|exe|pdf|ppt|txt|tar|mid|midi|wav|bmp|rtf|js|xlsx)$") { rewrite ^(.*)$ /index.php last; break; } } location ~ \.php$ { fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; include fastcgi_params; } } It works, but does not look right. The following seems logical to me: location /oauth { allow 87.240.156.0/24; deny all; rewrite ^(.*)$ /index.php last; } But this way rewrite happens all the time, allow and deny directives are ignored. I don't understand why...

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• One Way Sync with Dropbox?

  - by user244805

  Is there any way I can mirror a dropbox folder to my C drive by just running a portable file? Extra background information because I know you guys hate it when you don't get the entire situation: I go back to University in fall and I need a new storage solution. I decided to use DropBox to sync my tiny University files (< 5 MB). I need to access these files from 4 machines: Windows 7 Home machine Windows 7 University A machine Windows 7 University B machine Android tablet 1 and 4 are a non-issue. The problem lies with 2 and 3. I want to be able to edit my files on 2 and 3 but those machines are not mine. There is an easy fix. Run a portable version of the DropBox syncer on a USB drive. But the problem is that I don't want to carry a USB drive around with me all the time. In that case, I can just run the small portable DropBox syncer off the internet. But where will it to store the files? A temporary directory on the C drive. There is only one issue left: there are hundreds of machines that I will randomly use that fit in categories 2 and 3. My portable DropBox syncer will notice that the temporary directory is empty on each new PC I use and instead of downloading my DropBox folder to the machine, it syncs the other way around i.e. it deletes my entire DropBox. The solution is to mirror my DropBox onto the temporary directory before running the DropBox syncer.

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• Router intermittently failing

  - by nomen

  My old Asus router died a few weeks ago, so I thought I'd set up my Debian box to deal with routing my home network. I have a few complications, but I adapted my configuration from a previously working configuration, and I don't see why I am having intermittent problems. But I am having them! Every so often, my SSH connections to the router (and to the Xen virtual machines hosted by the router) just drop. I am unable to use the router's dns server. I can't ping the router. Etc. All of these things work most of the time, but break down intermittently, for a few minutes at a time. (I can provide more details, but I'm not sure what will be helpful) /etc/network/interfaces: # The loopback network interface auto lo iface lo inet loopback # Gigabit ethernet, internal network auto eth0 allow-hotplug eth0 iface eth0 inet manual # USB ethernet, internet auto eth1 allow-hotplug eth1 iface eth1 inet dhcp # Xen Bridge auto xlan0 iface xlan0 inet static bridge_ports eth0 address 10.47.94.1 netmask 255.255.255.0 As I understand it, this is sufficient to create the network interfaces, and even do some switching between Xen hosts and my eth0 interface. I installed and configured Shorewall to manage routing between the bridge and my internet-facing interface: /etc/shorewall/zones fw firewall net ipv4 lan ipv4 /etc/shorewall/interfaces net eth1 detect dhcp,tcpflags,nosmurfs,routefilter,logmartians lan xlan0 detect dhcp,tcpflags,nosmurfs,routefilter,logmartians,routeback,bridge /etc/shorewall/policy net all DROP info fw net ACCEPT info all all REJECT info /etc/shorewall/rules DNS(ACCEPT) fw net DNS(ACCEPT) lan fw Ping(ACCEPT) lan fw ... and so on, these all work, when the router is accepting traffic at all. /etc/shorewall/masq eth1 10.47.94.0/24 Also, the router is currently "working", and I checked on a problematic client: arp infrastructure infrastructure.mydomain (10.47.94.1) at 0:23:54:bb:7d:ce on en0 ifscope [ethernet] I tried it when the router was down, and I (eventually) got the same response. It took about 30 seconds to return, though.

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• Must have local user to authenticate Samba to AD?

  - by Phil

  I've got a CentOS 5.3 server with Samba running. I've joined this server to my domain in the hopes of allowing AD users some access to my Samba shares. I've found that this works, but only as long as the AD username that I'm trying to authenticate with is also a local user on the server. In other words, if I'm trying to access a share, and try to authenticate with the AD username "joe", I get errors unless I create a user named 'joe' on the server. I don't have to create a matching password or anything....the local user's password is always blank, so I do know that the authentication is actually happening against the AD. Here's my smb.conf file: [global] workgroup = <mydomain> server string = <snip> netbios name = HOME security = ADS realm = <mydomain.com> password server = <snip> auth methods = winbind log level = 1 log file = /var/log/samba/%m.log [amore] path = /var/www/amore browseable = yes writable = yes valid users = DOMAIN\user1 DOMAIN\user2 DOMAIN\user3 DOMAIN\user4 I would assume that my kerberos settings are fine, as I've joined the domain and can use wbinfo to see users and groups. However, I can provide that info if necessary. Anyone have any ideas?

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• How do I tell Websphere 7 about a front end load balancer so that re-directs are handled correctly?

  - by TiGz

  On WebLogic 11G I can use the console to set the FrontendHost and FrondendPort on a server or on a cluster so that re-directs are handled correctly and end up resolving to the front end load balancer instead of the local host. The MBeans associated with this on WebLogic are, for example: MBean Name com.bea:Name=AdminServer,Type=WebServer,Server=AdminServer Attribute Name FrontendHost Description The name of the host to which all redirected URLs will be sent. If specified, WebLogic Server will use this value rather than the one in the HOST header. Sets the HTTP frontendHost Provides a method to ensure that the webapp will always have the correct HOST information, even when the request is coming through a firewall or a proxy. If this parameter is configured, the HOST header will be ignored and the information in this parameter will be used in its place. Type java.lang.String Readable / Writable RW How is the same thing achieved under Websphere 7? Follow up info: So I have 2 use cases actually. One is that I have a web app running under WebSphere on host A on port 9002 and a LB running on host B at port 80, when I visit the home page of the app via the LB on http://hostb/app the app redirects my browser to http://hostb:9002/app and it 404's I think this is WebSphere's fault but I guess it could be the app's fault? The second is that the web app in question needs to send emails containing URls that the customer can click on to get back into the web app - obviously this needs to be via the LB. On WebLogic the app uses MBeans to derive the LB url and I was hoping to use a similar mechanism on WebSphere.

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• Strange WiFi problem - network is "not connected" but works

  - by GalacticCowboy

  Background I'm using a Windows XP tablet PC connected to my home network. I do broadcast the SSID, but otherwise the wireless network is locked down as tight as I can make it - WPA2 with a strong key, MAC filtering, etc. I've had this computer for about 4 years and the router for about 6 months. Before that, the previous router was set up in the same way, and I've never had any particular problems. Problem This morning - as I type this, as a matter of fact - Windows is reporting that none of my network connections are connected. Yet somehow my Internet connectivity still works! ipconfig reports a valid IP address, domain, etc., even though Windows apparently doesn't know about it. I tried repairing the connection and it had no effect - the repair eventually timed out. I'm pretty sure that I could reboot the computer and/or the router, etc. and it would fix the problem. However, I'm more interested in knowing if any of you have ever seen anything like this, and what might have caused it? Since it works I'm not inclined to mess with it too much. My concern is that it's a precursor to bigger problems.

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