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• Access Bind9 DNS in Virtualbox on Host

  - by Philipp Melab

  I've set up a Ubuntu 10.04 Virtual Box with a Bind9 DNS server. The Box has a NAT Network connection for internet access and a host-only adapter for static ip connections from the host (OSX Lion). Thats the only way i managed to get internet and static ip inside the box, guess there is a better one ... The DNS works fine from inside the virtualbox, but not from the host. The http and ftp on the guest system is accessible via both addresses, so connection between host and guest are fine i guess. I tried to add both IP's as name servers. I'm completely new to Bind9 and DNS configuration. Anybody has a hint for me whats wrong? Or how i have to configure the DNS server?

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• How do I setup unison to sync a folder one way

  - by Rob

  I have a 1tb NAS that has a 1tb usb external hard attached I have prepared the file system on the usb disk and mounted it I want to 100% sync my data from my nas to the usb disk - but I want it to be incremental and only have the NAS as the 'master' - eg if a file changes on the usb external hard drive I want it to ignore this change as its not the live version (not that I think the files will change on the usb disk but im paranoid the live could get overwritten) Also if a file gets deleted on live I want to retain the deleted file on the usb disk Can unison sync one-way and achive the above for me? if so with simply unison sorce/ target/ Work? Thanks Rob

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• How to reset video/display drivers in Vista without restarting OS?

  - by jdk

  Currently I have to reboot my system if an external monitor is hooked up for it to be correctly detected and used. I think it would be faster to restart/reset the video or display drivers instead. How do I do this under Vista? I seem to remember from an old laptop using a Windows command-line command that would restart the wireless networking card device when it crashed. Is there something like that for video drivers? Background/Reason Because people rightfully ask why? - This is part of a larger problem which I'm waiting for resolution on from the manufacturer. In the meantime I'm looking for the above quick fix. Actually my video card often crashes my laptop when attaching an external monitor and trying to detect or use it. No solution from vendor yet and latest drivers do the same irksome behaviour. Windows says: A problem with your video hardware caused Windows to stop working correctly.

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• How to reset video/display drivers in Vista without restarting OS?

  - by jdk

  Currently I have to reboot my system if an external monitor is hooked up for it to be correctly detected and used. I think it would be faster to restart/reset the video or display drivers instead. How do I do this under Vista? I seem to remember from an old laptop using a Windows command-line command that would restart the wireless networking card device when it crashed. Is there something like that for video drivers? Background/Reason Because people rightfully ask why? - This is part of a larger problem which I'm waiting for resolution on from the manufacturer. In the meantime I'm looking for the above quick fix. Actually my video card often crashes my laptop when attaching an external monitor and trying to detect or use it. No solution from vendor yet and latest drivers do the same irksome behaviour. Windows says: A problem with your video hardware caused Windows to stop working correctly.

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• PHP shell_exec times out, but not when executed manually

  - by Breck Fresen

  I have a Windows 2008 server with PHP and msys installed. I also have a simple php script that calls shell_exec and tars a few files. When I run the script on my development machine (Windows 7), it works fine. However, when I run it on the Windows 2k8 server, it times out. When I copy and paste exactly what's being run on the cmd line and run it, it executes w/out error in less than a second. One more important detail: when I shell_exec 'dir' or 'netstat', the script runs without any problems. When I shell_exec 'ls' it hangs. When I run ls on the command line, it returns immediately. Other details that might be useful: The Windows 2k8 server is a VPS hosted by Rackspace. I did vanilla installs of Apache, PHP, and msys, but I haven't installed anything else. When I run whoami, I see the php script is executing as the user "nt authority\system".

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• IE8 on Win7 - file download results in "C:\ location not accessible."

  - by Soulhuntre

  Ok, an odd problem. For one user on a Win7 x64 system, attempting to download a file with Internet Explorer 8 results in a error "C:\ location not accessible. Access is denied." even though the target location is not on the C:\ drive. No other users have the problem and no other browsers do. The user does not remember deleting any folders recently, and it looks liek no new software has been installed. A checkdisk comes up clean. Any ideas? Ken

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• Windows Home Server backup recovery missing driver for USB Device

  - by Pat James

  I'm doing a backup recovery of a Windows 7 PC from the backup on Windows Home Server. I've done this before and am accustomed to the prompt to load drivers for devices such as the NIC from a USB flash drive, which I have all loaded up with the drivers from the special folder in the WHS backup repository for this PC. My problem on this PC is that one of the drivers the recovery CD complains is missing is "USB Device", and it fails to find the drivers when I click the button to scan for and install drivers. So it seems it can't access the USB flash drive to load the other drivers. Any suggestions? I think my next step is to pull a DVD drive from another system and plug it in with a CD burned with the device drivers.

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• iproute2 premptive route creation, i think....

  - by Bryan Hunt

  Firstly: I know could do this the easy way with SSH but I want to learn how to route. I want to route packets back through the same tun0 interface from which they came into my system. I can do it for single routes. This works: sudo ip route add 74.52.23.120 metric 2 via 10.8.0.1 But i'd have to add them manually for each request that came down the pipe I've taken the blue pill and followed the http://lartc.org/howto/lartc.netfilter.html: Netfilter & iproute - marking packets tutorial But it's oriented towards redirecting OUTGOING packets based upon markers What I want is for a packet that comes in via tun0 not to be dropped which is what's happening right now, running scappy or suchlike to receive packets it doesn't seem to be receiving anything. Watching in wireshark I see the initial SYN packets coming in on the tun0 interface but that's as far as it gets without a static route as shown above. Am I nuts?

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• Use apt-get source on a debian repo without using /etc/apt/source.list

  - by Erwan Queffélec

  I'm trying to use apt-get source as a regular user on a debian squeeze system. I want to retrieve the sources for cyrus-imapd-2.4 from the testing/wheezy repository. apt-get source works without root privileges; however, it seems there is no way to get apt-get to fetch anything from a repository that is not in /etc/apt/sources.list. Is there any command line option, alternate sources.list file, environment variable that will get apt to work with a custom repository ? I do have root access so I could change the /etc/apt/sources.list, however I really do not want to do that for a number of reason.

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• Running PHP scripts as the owner of the PHP file: security issues

  - by thomasrutter

  I'm using suexec to ensure that PHP scripts (and other CGI/FastCGI apps) are run as the account holder associated with the relevant virtual host. This allows for securing each users' scripts from reading/writing by other users. However, it occurs to me that this opens up a different security hole. Previously, the web server ran as an unprivileged user, with read-only access to user's files (unless the user changed the file permissions for some reason). Now, the web user can also write to user's files. So while I've prevented different users taking advantage of each other's scripts, I've made it so that in the event that some application has a remote code injection vulnerability, it now has not only read access but also write access to all that user's scripts and website. How can I deal with this? One idea I've had is to create a second user account for each user account in the system, so that each user has their own user account, and all their scripts are run under another user account. But that seems cumbersome.

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• selinux permissive and type targeted

  - by krisdigitx

  i am running centos 6.2 recently i noticed that apache was running with selinux enabled # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=Permissive # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection. SELINUXTYPE=targeted i noticed that these errors were coming on dmesg type=1400 audit(1354453732.704:9056368): avc: denied { name_connect } for pid=39006 comm="httpd" dest=11211 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=system_u:object_r:memcache_port_t:s0 tclass=tcp_socket type=1400 audit(1354453735.777:9056369): avc: denied { name_connect } for pid=39046 comm="httpd" dest=6379 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=system_u:object_r:port_t:s0 tclass=tcp_socket i then enabled /usr/sbin/setsebool httpd_can_network_connect=1 and this stopped the errors and also the webpages started to work. My question is if selinux is in permissive mode will selinuxtype=targeted enforce any polices? if not how did it solve the problem with apache as selinux was already in permissive mode?

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• How to uncompress a 9GB file in Windows FAT32

  - by Kashif

  I have a 2GB RAR file that contains a 9GB video file. I'm using a FAT32 file system. Now I want to unzip that file but after 4GB I get an error due to the FAT32 file size limit. Now I want to know that how I can extract that video? I know that one way is to convert my partition to NTFS but I don't want to follow that way. I've also tried 7-zip but that again gives error after 4GB. One other way is to split that file but I don't know how I can split a video file that is zipped. So any idea please? How can I get rid of this problem.

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• Centos 6 vsftp server

  - by henry

  I have installed vsftpd server in my centos 6 server. I created three users.first user can access the ftp server using his system password.All the users are in chroot_list. when the second user is trying to access through ftp with his password, one error message as follows: "operation not supported " my server's selinux configuration: [henry@admin ~]$ getsebool -a | grep ftp allow_ftpd_anon_write --> off allow_ftpd_full_access --> off allow_ftpd_use_cifs --> off allow_ftpd_use_nfs --> off ftp_home_dir --> on ftpd_connect_db --> off httpd_enable_ftp_server --> off sftpd_anon_write --> off sftpd_enable_homedirs --> off sftpd_full_access --> off sftpd_write_ssh_home --> off tftp_anon_write --> off How can I troubleshoot this issue?

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• Could it be sane to use Windows Server 2012 as desktop

  - by nCdy

  what about using it on desktop? I've got enough strong PC with intel core i7 and 8GB Ram so what should I think about: why not? Were looking about major differences compared to windows 8, found less. for example new file system - can it affect me? In my usual day I need development instruments alike visual studio, virtualization tools, and some games So far I can't find something that must stop me, everything I need can work (seems like) there. Tell me why I must not do it or if that is sane to do.

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• Version control and branching when using Oracle

  - by Ed Woodcock

  Hi folks: At work we're using Oracle and C#/ASP.net to handle a customer's website, this site is very large-scale so the database is very large. We use Perforce for our version control, and tack create or replace scripts to FogBugz cases whenever a database change, which has been fine until now, as we are now at a point where five developers are working on five expansions for the system, each on a seperate Perforce branch. Unfortunately, we cannot get duplicate databases, due to the database size, so everyone is still working from the same one. This is obviously a cause of problems: only ten minutes ago we had a bit of an issue where a stored procedure change for a branch propagated over to the Pre-Production server and caused a large number of crashes for the testers. Ideally, we would like a way to track these changes without having to manually keep track of them through FogBugz. My question is: how do you lot handle this situation? I'm sure there must be a good way by now to handle versioning, or at least tracking changes, in an Oracle database.

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• Which are the most important directories to backup on a Linux server?

  - by QAH

  Hello everyone! I'm running an Ubuntu 9.10 Linux server. I'm trying to find a way to backup the machine while it is running and from what I see, this eliminates the disk clone utilities. All of the disk clone stuff I have seen for Linux requires that you reboot into a special live CD. So my question is this, what is the best solution for backing up the system while it is running? Also, I don't really care about the OS config too much, I just want to be able to keep my stored files and my programs that I have installed on it. Thanks

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• What does 'http: getaddrinfo*.gaih_getanswer: got type "46"' mean

  - by koffie

  Today I got an e-mail from logcheck informing me that the following system event occurred. http: getaddrinfo*.gaih_getanswer: got type "46" Indeed, the above message occurs 4 times in /var/log/aut.log it occured twice yesterday around 6:46 am. And this morning it also occured twice around the same time. I wonder what this message means and if this message is something to worry about or if should just tell logcheck to ignore it. If it is something to worry about, then any pointers on how to fix the problem are appreciated.

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• A black screen with only the mouse cursor while booting

  - by akb.zak

  Once i tried to re-install Windows 7. I formatted C drive, during installation system was hanged during the step "installing updates". then i cancelled the process. When i tried again, after booting from CD a black screen with a mouse pointer appears. No further progress. The mouse pointer can be moved. I tried with some other disks also. I tried with installing ubuntu also. Even though similar condition.plz help........... I cannot install an OS

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• grub crc error after decompressing linux

  - by w00t

  Hi, I have a debian with a raid1 on it. Both HDDs have bootable flags and grub setup in MBR. If I only start up with sda, linux boots. If I only start up with sdb, grub shows up and says Decompressing Linux... crc error -- System halted I have reinstalled grub a few times now but still nothing. It goes like this: /dev/md0 contains /dev/sda1 /dev/sdb1 find /boot/grub/stage1 shows (hd0,1) (hd0,1) The line that boots Linux shows: root (hd0,0) kernel /vmlinuz-2.6.26-1-686 initrd /initrd.img-2.6.26-1-686 This kind of renders my "redundant" array useless. Any clues? update: just to mention, these are 2 different HDDs, sda is 320gb and sdb is 400gb. Both are WD and both have exactly the same partitions, cloned using sfdisk.

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• SQL Server 2000 + ASP.NET: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'

  - by Rick

  I just migrated a development workstation FROM: Windows XP Pro SP3 with IIS 6 TO: Vista Enterprise 64bit with IIS 7 Since the move, one of my pages that accesses an SQL Server 2000 database is receiving the following error from my ASP.NET 2.0 web page: "Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'." I have: enabled Windows Authentication in IIS and web.config disabled Anonymous Authentication in IIS set up Impersonation to run as the authenticated user verified that the logged in user (in this case, me) has access to the appropriate database on the SQL Server verified that my login and impersonation information is correct in the ASP.NET page by checking User.Identity.Name and System.Security.Principal.WindowsIdentity.GetCurrent().Name (both display my username) My connection string using SqlConnection is "Server={SERVER_NAME};Database={DB_NAME};Integrated Security=SSPI;Trusted_Connection=True;" Why is it trying to login with NT AUTHORITY\ANONYMOUS LOGIN? I have to assume it's some setting or web.config entry specific to IIS7 since it worked fine before the migration. NOTE: The SQL Server is Windows authentication only - no mixed mode or SQL only.

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• Belking Wireless Router unable to connect to internet although wireless connection is working

  - by ptamzz

  I have a Belkin Basic N150 Wireless router. I'm trying to set up wireless connection using the wired ports my university has provided in my hostel room. Usually, when I connect my laptop using a LAN wire through the port, my settings are like IP: 10.5.130.X Subnet Mask: 255.255.254.0 Default Gateway: 10.5.130.250 DNS Server: 10.200.1.11 and I'm able to connect to the internet. Now instead of connecting my laptop directly, I've connected the lan wire to the Belkin Wireless Router, set the router as "Use as an Access Point" and in the IP field, I've put up 10.5.130.1. Now I've set the IP of my system manually to 10.5.130.3. I'm able to connect to the wi-fi but I'm still not able to connect to the internet. What am I missing?

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• MySql service stops under 2008 r2 x64

  - by volody

  I have installed MySql 5.5 server under windows 2008r2 x64 Apparently I can see that MySql service stops even if is configured to start automatically What can I do to find out why this is happening? MySql database is used as backend of ASP.Net web site Is it possible that web site was not active for a while and system stop mysql service? Update: It was mysql-5.5.7-rc-winx64. I could be an issue with this version (release candidate). Now I am trying to install mysql-5.5.8-winx64 And I have an issue with configuring MySql to work using name pipes I did uncheck use of TCP/IP protocol and configuration wizard just hangs Update: I have found workaround. It is required to configure MySql to use TCP/IP first, then reconfigure to use named pipes It looks like this link also has some information about the possible problems How should I diagnose ERROR 1045 during MySQL installation?

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• How to locate chrome bookmarks in linux

  - by xenon

  I upgraded from Karmic Koala to Lucid Lynx beta, was working fine for a while (was even rebooting). But, after some time, it is not booting and i cant find a solution. I have tried installing the grub again, doesn't help. Well, the problem is all my settings, bookmarks and passwords are blocked in that partition. I cant find where the Chrome stores bookmarks in Ubuntu. Can you help me either getting my system rebooted or getting the bookmarks ? Thanks. p.s. I am currently on liveusb.

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• Using symbolic links with git

  - by Alfredo Palhares

  I used to have my system configuration files all in one directory for better management but now i need to use some version control on it. But the problem is that git doesn't understand symbolic links that point to outside of the repository, and i can't invert the role ( having the real files on the repository and the symbolic links on their proper path ) since some files are read before the kernel loads. I think that I can use unison to sync the files in the repo and and the their paths, but it's just not practical. And hard links will probably be broken. Any idea ?

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• Finding throuput of CPU and Hardrive on Solaris

  - by Jim

  How do i find the throughput of a CPU and the Hardisk on an open solaris machine. Using MPstat or iostat. I'm having a hard time identifying the throughput if it is given at all in the commands output. Eg. in mpstat there is very little explanation as to what the columns mean http://docs.sun.com/app/docs/doc/816-5166/mpstat-1m?l=en&a=view&q=syscl+mpstat I've been using the syscl column divided by time interval to find the throughput but to be honest i have no idea what a system call truelly is. I'm trying to to analyze a hardrive and CPU while writing a file to the hardisk and when at rest Thanks in advance. Jim

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