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• Samba permissions on a Debian server with Fedora client

  - by norova

  I have a Debian server sharing files via Samba. I can access the files via Windows with no problems whatsoever, but when I try to mount the share on a Fedora client using the same credentials I am unable to write to any files. I have proper read access, but no write permissions. Here are the settings for the share from my smb.conf: [lampp] path = /opt/lampp writable = yes browsable = yes I have to assume that it is an issue on the Fedora side of things because accessing the share from Windows works fine. I have also tried mounting via SSHFS with no luck; it also will allow me to read files but not write. However, in Windows, using a program called WebDrive I am able to access the files (essentially via SSHFS) with no issues whatsoever. I have tried setting up NFS but not much luck there either; I'd rather just stick with Samba if possible. Any suggestions?

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• How to debug xsane "no devices available" error on 64 bit Ubuntu 10.04

  - by BD at Rivenhill

  I have a Brother MFC-J615W printer/scanner and I wish to use the scanning feature across a network with a computer running 64-bit Ubuntu 10.04. I have installed the drivers from the Brother website and followed all of the instructions, and printing works fine, but xsane (installed from repositories) produces a popup with the message "no devices available" on startup. I recently had success with a similar approach when installing drivers for a Brother MFC-495CW on 32-bit Unbuntu 9.10, so I am aware of issues such as requiring root access if the driver permissions are not set correctly, but running xsane as root does not solve this problem. Are there any tools available to debug this problem further or does anyone have advice on how to proceed?

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• back-end SQL server 2005 databases for website

  - by Datapimp23

  Hi, We're migrating an existing IIS website + MS SQL 2005 database (on the same server) to a new test set-up. The existing set-up is too slow. I want one ISS server and 2 X MS SQL server 2005. One live DB server for the website queries (inserts, updates) and another for backups, reports or stored procedures. So the live DB should be more aimed at performance. The other doesn't even need to be synced instantly. What is the best way in SQL server 2005 to set this up. Can somebody point me in the right direction and give me some pointers. Thanks

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• Are Plesk server backups useful?

  - by Michael T. Smith

  I'm working for a startup now, and I'm the programmer. Because of our small team size, I'm also handling the server management for now (until we get a dedicated server administrator.) I've never used Plesk before, and the server we're using (a Media Temple Dedicated Virtual server) had it installed when I got here. One of my first jobs was to set up backups: Plesk was already running it's nightly server-wide backups. I created a small script to dump the web app, it's DBs and any assets, tar them, store them, and then copy them to another small server we have (to backup the backups.) But, we're constantly running into hard drive space issues because of the Plesk backups. And I'm wondering, are they useful? If I have the web app and all of it's assets, I could easily enough get another server up and running. Do we need to keep running Plesk's backups? Thoughts?

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• Does SELinux make Redhat more secure?

  - by vfclists

  Does SELinux make Redhat more secure? I can't remember the number of times when I have disabled SELinux because it kept frustrating my ability to get stuff running. Lots of times to there was no obvious reason why stuff wasn't working and I had to Google to discover why. Given that most casual users will disable or weaken security when it appears to get in the way, with the exclusion of serious, enterprisey Redhat users, is SELinux really useful? PS. Is there some tool that helps you log, track and manage SELinux issues across all applications? In spite of being an Ubuntu user I am a closet Fedora fan.

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• Explorer.exe keeps crashing if effects are enabled

  - by Allende

  The explorer.exe keeps crashing before every minute after starts when all the effects are activated. These are the details of the error: Problem signature: Problem Event Name: InPageError Error Status Code: c0000185 Faulting Media Type: 00000003 OS Version: 6.1.7600.2.0.0.256.48 Locale ID: 1033 Additional Information 1: a7aa Additional Information 2: a7aa91f17ea749d42a4de3b390fa5b3d Additional Information 3: a7aa Additional Information 4: a7aa91f17ea749d42a4de3b390fa5b3d Read our privacy statement online: http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409 If the online privacy statement is not available, please read our privacy statement offline: C:\Windows\system32\en-US\erofflps.txt I suspect there's a problem with my hard drive ('cause I already have to format/install twice before this error) but not pretty sure why if I disable all the effect (Performance options) help to stop the issue. Anyway if someone have any idea, thanks. I already replace shell32.dll and explorer.exe using the windows 7 dvd Laptop Model: ProBook 4520s Windows Version: Profesional 32 bits. My regards

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• Buying Dual Monitors of different size and resolution

  - by rutherford

  I'm about to go choose a dual monitor setup: 1) Is there any reason why I can't just walk out and buy the two TFT screens I like (a wide screen and a 'portrait' screen) and combine them? Mainly wide screen would be for gaming, and portrait for browsing. I'd want the desktop stretching from one to the other (ie drag pointer, apps from one screen to the other) 2) Also do I need separate gfx cards for each monitor or can one cover both? any performance cost? 3) And can I have separate background images for each, seeing as they'll be different resolutions?

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• How to make IIS7 stop adding etag to response headers?

  - by user20028

  For performance reasons, I'm using expire headers for static files (adding long expiration periods like 50 years or so). Now I'm trying to get rid of etag headers which are automatically added by IIS7. I've done some searching but it seems harder than what I thought (there doesn't seem to be a straight forward way). I found some workarounds but they all use httpmodules (which I'm keeping as a last resort). I strongly prefer to not get the etag header added in the first place. Did anyone manage to do this? Thanks

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• Increase data transfer speed through bonding/lacp?

  - by Matteo

  I want to maximize the throughput of a data transfer between two servers. The copy will be made at the application layer using Robocopy. To clear things up, please check my Visio schema of the network: FS1---------(SW1)===========(SW2)--------- FS2 SW1 to SW2 is connected through 10 gigabit Fiber Channel ethernet FS1 to SW1 is connected through 1 gigabit ethernet FS2 to SW2 is connected through 1 gigabit ethernet I first idea I've come up with is to use LACP, so I could use two Gigabit Ethernet between each server and the switch. A collegue told me that LACP is for availability and not performance, so he reckon this solution will not work. Is he right? Do I have other options? Thank you very much

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• How do I extract all the files in a VHD to a hard disk including permissions?

  - by Middletone

  I'd like to know wha thte best way is to make an exact copy of a vhd image and pu tit onto my hard disk. I've tried xcopy but there seems to be a number of issues rlated to permissions when doing this. Ideally I'd like to copy the bits so that they match exactly on the new drive. I encountered this when trying to restore a vista backup only to discover the idiots work who decided to not let me restore a 400 gig image to a 1 TB drive size. I've sucessfully mounted the drive in Win 7 which is the environment in which I'm trying ot copy these files.

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• Is there a VNC server for mac with decent international keyboard support?

  - by Stephan

  Hi, I'm having trouble finding a VNC server for Mac OS X that allows me to connect from a Windows box with German keyboard layout. I've tried the built-in desktop sharing and several versions of Vine but all of them had problems with several keys. Does maybe anyone know about a working combination of a Mac OS X VNC server and Windows VNC client which properly supports a German keyboard layout on the client? Update: I don't think the Windows client is the problem, because I have no issues connecting to Linux boxes. And I've tried several different clients.

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• How to re-do the hard disks in a WD Word Book Edition II ?

  - by jfmessier

  I recently purchased a WD World Book II, a 2 TB one. I call it the "White Box". It has those 2 1TB drives, and they were in this RAID 1 config, only giving me about 1 TB. I could not delete the raid array, and I took the drives in a Linux box. But I also deleted the entire partitions of the disks, and I cannot even et the existing RAID array on this WD White Box. The drives are fine, but I cannot get them to work on the WD White Box. My goal was to get back to a real 2 TB storage space. If I cannot get those drives back in the White Box, I can re-use them elsewhere, but this would mean a waste of the firmware and network connection. After the fact, I read that, anyway, the network performance is rather poor. Thanks :-)

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• Does Apache2 Configured as ReverseProxy Hide Cookies Set by Backend Servers?

  - by Ianthe

  I use Apache 2.2.16 as Reverse Proxy. For a static website, I don't have any issues. However, when began to use cookies, I've noticed that cookies are not being sent to the client. Here's a snippet of my config: <VirtualHost *:80> ServerName app.somewhere.com:80 ServerAlias app ProxyRequests Off ProxyPreserveHost On <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass /app http://10.x.x.x/app ProxyPassReverse /app http://10.x.x.x/app <Location /> Order allow,deny Allow from all </Location> </VirtualHost> But when I try to access the app server directly, I receive the cookies ok. Is this an expected behaviour for Apache2? I'm using HAProxy for another application that sends cookies to the client and I get all of them.

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• SQL Server Files Local or NAS or SAN?

  - by Jedi Master Spooky

  I have to install a new Server with SQL Server 2008, What do you recommend, One server with Raid 10 or the Files in a NAS? What about iSCSI should I use it? What about SAN? The server has 4Gb of RAM and that database file is about 2GB. To make my self clear today the server has no RAID, I have to implement some kind of strategy so if something happend I can have my files safe, so What should I choose Local Files, NAS, SAN? What option has the most performance, what is the more secure?

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• $RYSNC_PASSWORD not being read/responded-to correctly (Snow Leopard)

  - by warren

  Ignoring the security issues, I have the following script that synchronizes my music library from my MacBook Pro (running Snow Leopard) to the file store (CentOS 4) on my network: rsync -rav --progress --partial -e "ssh" ~/Music/iTunes/* user@scramasax:~/music/iTunes-scissor:~ When I try to use either a password provided on the command-line (), in a password file (--password-file), or in the environment variable RSYNC_PASSWORD, the login still goes interactive, requiring me to type my password again. I will be moving to pre-shared keys on my network, but in situations where that is not possible, such as rsync'ing files to a webserver, being able to successfully embed the password in the script would be very helpful.

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• How do boot sectors and multiple drives works?

  - by GiH

  I don't fully understand the concept of a boot sector, I was hoping someone could clear this up for me. If you have two hard drives, with an OS installed on each, does each drive have its own boot sector? Does each drive need an MBR partition? I've got Linux and Windows on two separate drives. I've had issues when installing Linux and grub, and now I've finally decided to use the Windows bootloader to start up. Would Windows have gotten rid of grub when i used /fixmbr or does it stay there on the boot sector of the other drive?

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• How can I diagnose a "502 Bad Gateway" response from an Apache/Tomcat configuration?

  - by Structure

  I just finished up configuring a fairly default configuration of Tomcat. My Apache configuration was pre-existing and post-tomcat it still has no issues. I am using mod_jk to (if I am saying this correctly) interface between Apache and Tomcat and have my conf files setup for my workers, etc. I put my test file (Simply: http://tomcat.apache.org/tomcat-4.1-doc/appdev/sample/web/hello.jsp) into my tomcat/webapps/ directory and then call it via http://localhost/test/hello.jsp. From here Apache returns a "502 Bad Gateway" response. I confirmed this via the Apache logs, but beyond that I have no idea how to diagnose the issue. I assume the 502 is because Tomcat did not respond. I'd like to confirm if Tomcat received the request, but cannot locate the log file. At this point I had thought my installation was complete, so not sure where to go from here. Any input would be appreciated.

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• email spam filering in bridging

  - by User4283

  I've a mail server, which handle multiple domains. Due to concern of spam and mail server performance. I've configured another machine which will be in bridging and mail server would be behind that it. How can i filter spam emails in bridging server without running any smtp services. Scenario Internet +------+ Spamfilter Server (in bridging mode) +---------+ MailServer SmartHost will work for outgoing email. In this scenario i can filter all incoming emails. There is also another option of DNS which i don't want to use.

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• Windows 7 Printing to a network printer

  - by JohnyV

  We have a 2008 server as our print server. Clients that use windows xp with a logon script to map have no problems printing. When I test printing to a network printer on a windows 7 machine it works fine up to a few machines as soon As i get 12-15 workstations trying to print, when they log in they get the yellow exclamation mark and needs troubleshooting against the printer name. It is being deploy by group policy. I have tried to deploy it by group policy also by group policy preferences and by using a script and i get the same error whatever i try. Does anyone have any suggestions to try and troubleshoot? Once again Windows xp clients have no issues printing at all. It is only windows 7 clients. Thanks

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• Photo Management Software for OS X That Supports Multiple Library Locations

  - by Lance Rushing

  I'm looking at the possibility of changing our photo management software. Thinking about Aperture or Lightroom. And want to know if either supports: Having folders/libraries on separate harddrives/Volumes. Tolerates having network folders occasionally connected Snappy interface A solid enough piece of software as not to crash or behave weirdly. [ so the wife doesn't get stuck and have to call me ;) ] Background The wife is photographer and I'm the computer programmer. Our current setup is Picasa, with a "Recent/Working" folder on the local iMac harddrive, and "Archive" folders on NFS mounted Linux Server, Raid 5, for redundant and extra storage capacity. (the Linux server also syncs with Amazon's EC2) Picasa is doing OK, but I get annoyed when it doesn't do behave properly. Usually around issues when the Linux disk isn't mounted. And overall, I wish Picasa seemed a little more polished and snappier. Thanks, Lance

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• Apache only transferring partial content from a Samba share

  - by thaBadDawg

  I have an Apache server running on CentOS 5.3. It currently hosts 12 sites with no known issues. (I say this to point out that up to this point my Apache installation has performed flawlessly) I'm adding a new site where the DocumentRoot of the new VirtualHost is a Samba share. When at the command line of the server I can cp video.m4v ~ and the whole file is copied properly to my home directory. But when I try to access the file from IE/Firefox/Safari/Chrome it only passes back a partial result of 33k. The same thing is happening with my image and audio files. If I make the files local to the server by copying them from the share and then serving them up then the files transfer. Any ideas?

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• Linux bash: when to use egrep instead of grep?

  - by Michael Mao

  Hi all : I am preparing for a Linux terminal assessment now, I tried to Google and found most resources are referring to the basic "grep" rather than the more powerful "egrep" -- well, that is at least what the professor said in lecture. I am always working with small samples so performance tuning is a thing too far away. So basically I'd like to know are there any areas where I must switch to egrep to do it in a better way? Is it safe to work with basic "grep" as for now? will there be potential risks? Sorry about my limited knowledge on Linux shell commands, the man page looks like a maze to me and honestly I haven't put much time in understanding all the features both command provide.

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• Apple RAID configuration vs Hardware RAID

  - by James Hill

  I am researching external HDD's capable or RAID 1 to store a large amount of video content during overseas filming. After filming, the content will be brought back to the office and offloaded onto our storage server. After doing some research, I've found that I can buy an external drive with a built in RAID controller, or I can buy an external drive, with 2 HDD's, that I can configure in a RAID 1 array using the OS. RAID 1 is what we're looking for. I've done some reading on software RAID vs. hardware RAID, but the resources I've found don't discuss performance as it relates to video content or what happens to a software RAID when the computer dies. Question 1: Will the hardware RAID be more performant when dealing with large video files? Question 2: If the mac dies, does my RAID die with it (will my data be accessible on another mac)?

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• What tangible security are gained by blocking all but a few outgoing ports in a firewall

  - by Frankie Dintino

  Our current hardware firewall allows for blocking incoming and outgoing ports. We have two possibilities: Block certain troublesome ports (unsecured smtp, bittorrent, etc.) Block all but a few approved ports (http, https, ssh, imap-ssl, etc.) I see several downsides with option 2. Occasionally web servers are hosted on non-standard ports and we would have to deal with the resulting issues. Also, there is nothing preventing a malicious or unwanted service from being hosted on port 80, for instance. What are are the upsides?

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• Exploratory Question for Security Admins (/etc/passwd + PHP)

  - by JPerkSter

  Hi everyone, I've been seeing a few issues lately on a few of my servers where an account gets hacked via outdated scripts, and the hacker uploads a cPanel / FTP Brute forcing PHP script inside the account. The PHP File reads /etc/passwd to get the usernames, and than uses a passwd.txt file to try and brute force it's way in to 127.0.0.1:2082. I'm trying to think of a way to block this. It doesn't POST anything except "GET /path/phpfile.php", so I can't use mod_security to block this. I've been thinking of maybe changing permissions on /etc/passwd to 600, however I'm unsure how this will result in regards to my users. I was also thinking of rate-limiting localhost connections to :2082, however I'm worried about mod_proxy being affected. Any suggestions?

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