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• Rewrite request URI based on Host header in HAProxy

  - by DorinC

  I would like to set up HAProxy to forward HTTP requests to some backend servers but I need it to also rewrite the URI part based on the Host. I've read through the doc but it seems that reqirep isn't suitable for this purpose. Any idea if this is even possible with HAProxy? Here are the details of what I'm trying to accomplish: Requests that come in on: http://www.original-domain.com/ would be balanced between: http://server1/domains/www.original-domain.com/ ... http://serverN/domains/www.original-domain.com/ The proxy should be able to handle this for any number of domains (original-domain.com can be anything, it's not limited to a fixed set of values). For this to work HAProxy would need to rewrite a request like this: GET /original-uri HTTP/1.1 Host: original-domain.com to: GET /domains/original-domain.com/original-uri HTTP/1.1 Host: serverN and forward that request to one of the internal servers.

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• Mail server hammering

  - by Rodrigo

  I've noticed a quick increase on smtp connections coming to my server, investigating it further i figured out that there's a botnet hammering my smtp server. I've tried to stop it by adding a rule at iptables: -N SMTP-BLOCK -A SMTP-BLOCK -m limit --limit 1/m --limit-burst 3 -j LOG --log-level notice --log-prefix "iptables SMTP-BLOCK " -A SMTP-BLOCK -m recent --name SMTPBLOCK --set -j DROP -A INPUT -p tcp --dport 25 -m state --state NEW -m recent --name SMTPBLOCK --rcheck --seconds 360 -j SMTP-BLOCK -A INPUT -p tcp --dport 25 -m state --state NEW -m recent --name SMTP --set -A INPUT -p tcp --dport 25 -m state --state NEW -m recent --name SMTP --rcheck --seconds 60 --hitcount 3 -j SMTP-BLOCK -A INPUT -p tcp --dport 25 -m state --state NEW -j ACCEPT That would avoid them from hammering "too fast", however the problem still, there's like 5 tries per second, it's going insane, i had to incrase the maximum number of childs of sendmail/dovecot. There's too many ips to filter out manually and simply changing the smtp to another port is not practical since i got many other clients on that server. I'm using sendmail with dovecot, any ideas to have this filtered out more efficiently?

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• .bat file overriding answer

  - by John Peters

  When I made this batch file, when typing y and n for the first time it works fine, but as soon as I choose n, every single time I try inputting something, it opens up the 7000 songs wpl list then closes it and replaces it with Rick Astley... HELP! @echo off :Ask echo Would you like to listen to the best songs out of the 7000 I have?(Y/N) set INPUT= set /P INPUT=Type input: %=% If /I "%INPUT%"=="y" goto yes If /I "%INPUT%"=="n" goto lolno echo Incorrect input & goto Ask :yes start c:/Users/MyName/Music/Playlists/"The Best of the 7000 songs that I have.wpl" :lolno start c:/Users/MyName/Music/Downloads/Music/"Various Artists"/"The Number One 80's Album Disc 2"/"06 Never Gonna Give You Up.mp3"

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• thunderbird - how to have emails erased automatically removed from gmail?

  - by pixeline

  I understand that by connecting via imap to my gmail account with thunderbird, whatever i do in thunderbird would be reflected in gmail. Yet, if i delete emails in thunderbird, those emails are still present in gmail, even after a while. I set my account preferences in thunderbird under the option "leave messages on the server?" to: "until i delete them". Did i understood imap wrong, or did i set up something wrong? I would really like to be able to clean up my gmail account via a desktop client, such as thunderbird, as it is much more responsive, and i have 4gb of messages to clean up.

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• Why does my $LD_LIBRARY_PATH get unset when using screen with bash?

  - by UltraNurd

  This is related to http://superuser.com/questions/27376/why-does-my-ld-library-path-get-unset-launching-terminal, but a different set of symptoms. First, /usr/bin/screen is setuid as per the other question. Second, the default shell on this system is /bin/tcsh for various historical reasons, and we're not allowed to chsh to /bin/bash, so I typically run bash manually immediately after login. Third, I almost always use screen, but I want ctrl-a ctrl-c in screen to create a new bash "tab", so I always invoke bash first. That is: {~} $ echo $SHELL /bin/tcsh {~} $ bash [~] echo $SHELL /bin/bash [~] screen -U [~] ...and when reconnecting: {~} $ echo $SHELL /bin/tcsh {~} $ screen -dUr [~] echo $SHELL /bin/bash [~] However, my $LD_LIBRARY_PATH is there in tcsh, there in bash, but empty once I run screen; it is still present if I just run screen from tcsh, but then I get new tcsh "tabs" when I use ctrl-a ctrl-c in screen. Any ideas?

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• Unable to edit CIFS Share permissions

  - by Datapimp23

  Hi, I have this backup Disk to disk device HP Storageworks 2540i. Managing the device is via a web interface. I joined the device into our AD domain in the CIFS server configuration. I then created a CIFS share called backupdata. If I try to access it I'm prompted for a login. The permissions tab in the web interface is empty. The following message is displayed. "CIFS Authentication is managed through Active Directory" However I do not find the share in AD. I forced replication between all DCs and I do not find it. Is there another way to edit the permissions?

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• tcp flags in iptables: What's the difference between RST SYN and RST and SYN RST ? When to use ALL?

  - by Kris

  I'm working on a firewall for a virtual dedicated server and one of the things I'm looking into is port scanners. TCP flags are used for protection. I have 2 questions. The rule: -p tcp --tcp-flags SYN,ACK,FIN,RST SYN -j DROP First argument says check packets with flag SYN Second argument says make sure the flags ACK,FIN,RST SYN are set And when that's the case (there's a match), drop the tcp packet First question: I understand the meaning of RST and RST/ACK but in the second argument RST SYN is being used. What's the difference between RST SYN and RST and SYN RST ? Is there a "SYN RST" flag in a 3 way handshake ? Second question is about the difference between -p tcp --tcp-flags SYN,ACK,FIN,RST SYN -j DROP and -p tcp --tcp-flags ALL SYN,ACK,FIN,RST SYN -j DROP When should ALL be used ? When I use ALL, does that mean if the tcp packet with the syn flag doesn't have the ACK "and" the FIN "and" the RST SYN flags set, there will be no match ?

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• Dual boot Windows 7 with Windows 8- Dynamic Disk

  - by MeetM

  Its a long explanation. I have a HP Pavilion dm4 notebook. It has pre installed Windows 7 Home Pre. Recently, I tried to install Windows 8 developer preview on my notebook, but while installing, it only allowed me to insatll it on my primary Windows 7 drive I.e. drive C. I had kept 1 empty partition for Windows 8 but when I selectced that option, the next button at the bottom of the window just grey with some error saying Windows cannot boot from this drive....blah blah blah So I googled and found another way of doing it by VHD(virtual hard disk). This seemed to work but on restarting gave me "VHD_BOOT_INITIALIZATION_FAILED" error. After trying all possible ways for around 10 times, I gave up. I noticed that d only thing difference in d tutorials and my notebook is the Disk type. They all had Basic and I have Dynamic. Is that the reason m not able to boot Windows 8? Any suggestions?

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• Replace Whole Site by FTP

  - by Sam Machin

  Hi There, I've got a set of tools which periodically (about once a day) generate a complete set of static HTML pages for a site with associated folder structure etc. I then need to put those file onto the production server, my problem is that the server runs IIS(6 I think) and I only have regular FTP access. I need a way to automate the process of publishing the new site and it needs to a total replacement of the files each time its published, eg delete the whole folder & contents then put the new ones up. My source server is a ubuntu machine and I've got total control at that end, I have tried using CurlFTpFS but it seems to be too slow for what I'm trying to do and locks up. Rgds Sam

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• Connect my mac to my external local asp server

  - by Simon Davies

  I have pc server running asp that we use locally for our work that we have several PC's connected to it, and all works ok with this and we can run the sites locally ok. But I would also like to connect our mac to this server so we can also then use Dreamweaver on. I can access the server via the mac and Dreamweaver but when I set up a site(s) via DW using the same settings as we do on a PC and then run locally the site fails. Is there a way I can set up the mac to then be able to run the sites from DW using this local server? iMac IO Lion Dreamweaver Our server is windows 2003 sever.

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• Foward slash in kibana 3 query

  - by G Mawr

  I'm trying to add a query that will match a request that ends with a slash, like this one: n.n.n.n - - [16/Oct/2013:16:40:41 +0100] "GET / HTTP/1.1" 200 25058 "-" "Mozilla/5.0 (iPad; CPU OS 7_0_2 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A501 Safari/9537.53" I'm using the Lucene query type. If my query is set to *, I see the event. If I set it to request:"css", I see CSS requests, as expected. However, all of the following yield no results: request:"/" request:"\/" request:"\\/" I tried a Lucene regular expression, with no luck: request:/\// I note that someone else is getting what appears to be a similar issue, although that's on Kibana 2: https://github.com/rashidkpc/Kibana/issues/401 How can I query for requests that end with a / character?

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• Configure IE to use MS Word Viewer as .doc viewer on Citrix server with Office installed

  - by Adam Towne

  We have a small number of citrix servers that all have office installed. Only a small subset of users have access to office. Everyone is set to open office documents with the free viewers on the Citrix servers. We control access to office through NTFS permissions. We now have a large number of users who need to be able to view office documents from a webpage. Opening office files normally works fine. When users open the office documents from the link in a webpage, it ignores the file associations and attempts to open the document with the full office program. How can I change the program that IE uses to open office documents, or how can I force it to use the file associations I set in the operating system?

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• How do I perform multi-window operations on a non-combined group of windows in Windows 7?

  - by BACON

  With multiple windows/instances of an application open and the taskbar buttons set to "Always combine, hide labels", I can Shift + right-click the taskbar button for the window group to open a menu allowing me to "Cascade", "Show windows stacked", "Show windows side by side", "Restore all windows", "Minimize all windows", or "Close all windows". With the taskbar buttons set to "Combine when taskbar is full" or "Never combine", when I right-click, Shift + right-click, or Ctrl + right-click either the button or the Aero preview for a window in the group I get a menu allowing me to perform window operations on just that one window rather than each window in the group. When I have a non-combined group of windows in the taskbar, how would I cascade, stack, etc. that group of windows?

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• ubuntu server slowly filling up

  - by Crash893

  We had our samba server (ubuntu 8.04 ltr) share fill up the other day but when I went to look at it I cant see any of the shares have to much on them we have 5 group shares and then each users has an individual share one users has 22gigs of stuff a few others have 10-20mb of stuff and everyone else is empty so maybe like 26gigs total I deleted a few files yesterday and freed up about 250mb of space today when i checked it it was completely full again and i deleted some older files and freed up about 170mb of stuff but i can watch it slowly creep down in free space. I keep running a df -h Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 241690180 229340500 169200 100% / varrun 257632 260 257372 1% /var/run varlock 257632 0 257632 0% /var/lock udev 257632 72 257560 1% /dev devshm 257632 52 257580 1% /dev/shm lrm 257632 40000 217632 16% /lib/modules/2.6.24-28-generic /volatile what can I do to try to hunt down whats taking up so much of my hdd? (im fairly new to unix in general so i apologize if this is not well explained)

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• ubuntu server slowly filling up

  - by Crash893

  We had our samba server (ubuntu 8.04 ltr) share fill up the other day but when I went to look at it I cant see any of the shares have to much on them we have 5 group shares and then each users has an individual share one users has 22gigs of stuff a few others have 10-20mb of stuff and everyone else is empty so maybe like 26gigs total I deleted a few files yesterday and freed up about 250mb of space today when i checked it it was completely full again and i deleted some older files and freed up about 170mb of stuff but i can watch it slowly creep down in free space. I keep running a df -h Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 241690180 229340500 169200 100% / varrun 257632 260 257372 1% /var/run varlock 257632 0 257632 0% /var/lock udev 257632 72 257560 1% /dev devshm 257632 52 257580 1% /dev/shm lrm 257632 40000 217632 16% /lib/modules/2.6.24-28-generic /volatile what can I do to try to hunt down whats taking up so much of my hdd? (im fairly new to unix in general so i apologize if this is not well explained)

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• Setting up Windows 2008 with VPN and NAT

  - by Benson

  I have a Windows 2008 box set up with VPN, and that works quite well. NPS is used to validate the VPN clients, who are able to access the private address of the server, once connected. I can't for the life of me get NAT working for the VPN clients, though. I've added NAT as a routing protocol, and set the one on in the VPN address pool as private, and the other as public - but it still won't NAT connections when I add a route through the VPN server's IP on the client side (route add SomeInternetIp IpOfPrivateInterfaceOnServer). I know I can reach the server's private interface (which happens to be 10.2.2.1) with remote desktop client, so I can't think of any issues with the VPN.

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• SQL Server 2005 Default Backup Plan

  - by tylerl

  I noticed that a newly imported database on SQLServer 2005 had configured itself (without my knowledge) to perform daily backups; but it's not deleting old files and quickly filling up the disk. I don't know how the backup job got configured (maybe that's something that gets transferred when you move a database?) but I'm having trouble modifying it. The backup runs as part of SQL Server Agent job called "Daily Backups". This job runs a package called "(SSIS Packages)\Maintenance Plans\Backup Plan" -- which I can't find. The "Management\Maintenance Plans" area for my server is empty. I imagine I could delete the existing plan and re-create it manually, but I was hoping to just modify what was already there, since all that's missing is deleting old files.

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• Remote desktop logs in with saved credentials when connecting from one computer but asks for username and password from another.

  - by AndrejaKo

  I have two computers on which I recently installed windows 7 64 bit. Using VPN, they connect to remote network on which there is a Windows Server 2000 SP4 computer. User is supposed to connect to server using remote desktop. I set same VPN and remote desktop settings on both computers with Windows 7. I set Remote desktop to save connection credentials on both computers, but when I connect to server form one computer, it uses saved credentials and I don't get log-in prompt on server side. On the other computer with same settings using same username and password, I get log-in prompt once the remote desktop connects to server. I even tried copying the .rdp file from the computer on which everything is working fine to the other computer, but that didn't help. Note that I'm not trying to have both computers connected at the same time. What is causing this and how do I make the other computer skip windows server 2000 log-in prompt.

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• Problems setting up home web server

  - by putmatrix

  Has anyone been able to get a server working with the router smcwbr14t-g? Although I have been able to get Apache set up correctly and my website works on the internal IP 192.168.2.101, I've been running into a dead end when trying to get it to show up on my external IP. In my router, there is no option for port forwarding, but there are options for a 'virtual server'. Following the manual, I have it set up like this: http://imgur.com/zrcV7.png I also disabled the firewall. I configured Apache to listen to ports 80, 81, and 443, none of which solved the problem. However, the IP's 192.168.2.101:443 and :81 load fine. The problem is that I still cannot load the web site from my external IP, either from my computer or outside.

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• 'Unsaved Theme' is not appearing when I make a change to a theme in Windows 7

  - by Bernard

  According to personal experience and Microsoft documentation, when an aspect of a theme (wallpaper, border colour, etc) is changed in the 'Personalization' screen of Windows 7, a theme called Unsaved Theme is supposed to be created/exist under the 'My Themes' heading. However, my 'My Themes' section is always empty, and if I change the background by clicking on the Background link at the bottom of the Personalization page, the background changes, but it still shows 'Harmony' as the selected background, and no 'Unsaved Theme' is created. I have no idea how long this has been happening, but I would like to create some themes, but it never acknowledges my changes as it is supposed to.

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• Mac OS X: All bootcamp options start Windows

  - by Brian Heylin

  I just installed the latest security update on Mac OS X (installed on 2-10-2010). On restart my Mac booted in Windows 7, which I had installed previously and was set not to boot by default. I tried to restart holding the alt key, and selected the Mac OS X partition, but still the Windows 7 partition boots. It does not matter what partition I choose, Windows 7 always boots. I took a look in the OS X partition and noticed that the admin home folder is empty, or at least Windows is not showing any files there. There is another user on OS X and I can see their files no problem. This has me stumped, has anyone any suggestions for a finding a solution?

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• One Mac computer with multiple network connections?

  - by Kyle Lowry

  I have a Mac (OS X 10.5) that I would like to connect to a dedicated/isolated Internet connection (one that is not connected to the LAN), and a LAN. The LAN is set up with its own, separate, Internet connection which is shared by several dozen computers (and is quite slow). I want to set it up so that the Mac uses its own dedicated Internet connection (on a different account with a different company) for its Internet access, but can still access the local area network as well. How can I configure the Mac & the network to allow this?

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• Mixed network, Linux-to-Linux hostname resolution issues

  - by James

  At work we have an WinSBS domain at the heart of our network, which is all Windows PCs. The domain controller is acting as a DNS for these computers. I have recently added some personal use Linux machines to the network, without joining them to the domain. I have set up Samba with "wins server" pointing to the domain controller, which lets the Windows boxes resolve the Linux hostnames just fine. I also have resolvconf set up with the domain controller as a nameserver and the local domain as a searched domain, which lets the Linux boxes resolve the Windows hostnames just fine. However, the Linux boxes will not resolve other Linux hostnames at all. Given that I don't have control over the DNS server (I am not the network admin) and that at least one of the Linux boxes is not an always-on machine and is likely to change its LAN IP frequently (via DHCP), what service am I missing to make their hostnames visible to each other?

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• Simple Workstation Imaging Solution?

  - by Will

  Hey guys, I need a fairly cheap imaging solution for Windows XP corporate desktops. Ideally, I'd be able to set up a desktop exactly as we want it, create an image, deploy this image to a server, then boot a new desktop to a CD/USB Drive/Network and quickly set up the workstation. Ideally, each computer would also have a unique workstation name. Any ideas? Right now I'm using a custom built Linux DD solution, but it's slow, not network-based, can't image multiple computers at the same time as there's only one copy on a USB drive, and can't uniquely name the computers. Thanks, Will

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• Increase text size in Ubuntu 10.04 due to having large resolution/monitors

  - by Sridhar Ratnakumar

  I have 24" dual monitors with 1920x1080 resolution on both of them. Consequently the text appears so small. I use the following text-intensive applications frequently: Web browser (Google Chrome) IDE (Komodo) Terminal (Gnome Terminal) Email (Thunderbird) I can configure text size on IDE, Terminal and Email. But for Chrome, it is not a good idea to set proportional font size because often one wants to see the entire (not just proportional fonts) site to be zoomed. So I am asking: Is it possible to increase DPI in Ubuntu (much like on Windows) so as to increase the text size across all apps? OR Is it possible to set permanent 'zoom' in Google Chrome, using a third-party extension maybe? I am using Ubuntu 10.04 (Lucid Lynx)

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