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• Can't ping other machines at Linux VPN PPTP server's local lan from outside

  - by Marco Sanchez

  Before anything else, hello guys, this is the first time I ask for something here so I hope someone can give me a hand, please look at the following network diagram: --------------------------------------------------------------- VPN Server Webserver (SuSE SLES11) | | | ------- VPN LAN -------- | Router with Unique IP (With Port Forwarding rules set and VPN through enabled) | PPTP connection over Internet | Workstation (PC or Laptop with Windows) --------------------------------------------------------------- So the idea is for the workstation to connect to the PPTP Server and then be able to access a Web Application on the Webserver, right now I have the PPTP server configured and the VPN works, I can connect to the SLES11 server with no problems from the workstation and I can ping it and everything works fine but if I try to ping the Webserver from the workstation, I can't reach it, I'm making a mistake somewhere but I don't see where, please note that I'm not a network expert and thus I'd greatly appreciate some specific guidance. Here is some info related to the IPs --------------------------------------------------------------- *** SLES11 VPN Server has 2 Network cards: -- eth0 (Internal Network) IP: 192.168.210.5 MASK: 255.55.255.0 -- eth1 (External Network) IP: 192.168.1.105 MASK: 255.55.255.0 *** Webserver has 1 network card -- eth0 (Internal Network) IP: 192.168.210.221 MASK: 255.55.255.0 *** Workstation -- IP info once connection has been established to the VPN PPP adapter Test VPN Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Test VPN Connection Physical Address. . . . . . . . . : DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.210.110(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : 0.0.0.0 DNS Servers . . . . . . . . . . . : 189.209.208.181 (Defined as part of the PPTP Server options config script) 189.209.127.244 Primary WINS Server . . . . . . . : 192.168.210.220 (Defined as part of the PPTP Server options config script) NetBIOS over Tcpip. . . . . . . . : Enabled --------------------------------------------------------------- I also defined the following within IP tables: ------------------------------------------------------------- iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables -A INPUT -i eth0 -p tcp --dport 1723 -j ACCEPT iptables -A INPUT -i eth0 -p gre -j ACCEPT ------------------------------------------------------------- If you need any piece of information from the PPTP server scripts please let me know, the thing is that I can actually connect to the VPN server and access its services and everything but after that I can't reach any other computer on that LAN. Any help would be greatly appreciated and thanks in advance

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• Quickly set up a Windows Server and automatically install and configure software

  - by Chris

  Yesterday I spent far too much time downloading and installing software on Windows Server 2008. I only had to install a simple server for SQL Server 2008 Express using Microsoft's Web Platform Installer, then configure it to enable remote connections. Everything had to be attended, wasting my time. On a Linux system, this would be trivial to automate, but this is Windows. I do this very rarely, but in the future I would like to make this take as little time as possible. I could do a disc image with everything I installed and configured, but is there a better way? I know nothing of advanced deployment techniques on Windows. Ideally I would like to be able to remotely re-install the OS, or have an unattended install (which I know is possible). Any tips to make the software I need easier to and install and configure with minimal interaction necessary would be helpful. I don't expect everything I asked for to be possible and easy to do. Basically, If any part of it can be done quicker or at least without user input, that's what I'm looking for.

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• Debugging Connection Issues Between Two Linux Servers

  - by clickfault

  I have two CentOS 5 servers running iptables and apf. I am having issues connecting with ssh from server 1 to server 2. I can connect from server 1 to a third server and from that third server to both 1 and 2. In all cases I am using the IP address and not a host name. I have stopped iptables and apf on all servers and it doesn't seem to change anything. What is the best way to debug this process?

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• Adding a Windows Server 2012 Essentials server to an existing domain, without migrating the AD

  - by TiernanO

  I have an existing Active Directory in house, a mix between a Win2K8R2 and Win2K3 domain, and i would like to test out Windows Server 2012 Essentials BETA on the network. When walking though the install, it gives me the option of a new domain, or migrating from an existing domain. when clicking existing, it tells me i can only have one SBS server running on a domain at a time... So, i dont have any existing SBS servers in house (both are full standard or enterprise editions) but i do plan on keeping at least one of these extra servers running... So, how do i get a 2012 Essentials server to join a domain, and not migrate the existing domain? or if i do migrate, can i still get one of the other boxes to act as secondary controllers?

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• how to copy sql server database on same server

  - by Sam

  I've got a SQL Server 2008 and want to make a copy of a database so I've got a 2nd Version of the database for testing on the same server. The database copy wizard is not able to copy the database, it always sends funny error Messages about missing objects (using SMO copy). When I try to make a backup and restore it under a different database name it still keeps the file names of the original database and overrides this (crashing the original database). So how do I copy a SQL database? Shutdown SQL Server, copy the physical files and attach them? Maybe a command line tool for database copy? Shouldn't there be an easy way to make a copy?

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• Window Server 2003 Print spooler

  - by mikenardone

  Hello Everyone in ServerFault, I am new to this website. I have been coming here to fix my own problems. I believe everyone here on this website is great. I could not find this issue anywhere. I am sure that other people had this issue. I have IBM X3850 48GB ram 2 TB of hard drives, four NIC cards. 2 Xeon 1.7 CPU. I am running VMware ESX. I believe that was the paid version if not then it is ESXI. I have 7 Servers on this server. All Window server 2003. On one of the Servers I keep on getting CPU is at 100% . So when I go into task manager and look at the processes that is going on, it is my print spooler. I have 30 different HP laserjet printers and two copiers from HP. I believe it is an driver issue, but I can't figure with one is doing this. Is there any programs for window server 2003 that finds bad print drivers.

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• Windows Server 2008 R2 running at a snail's pace

  - by Django Reinhardt

  Really weird problem here. Our main web server has started running at a snail's pace, for absolutely no reason we can discern. Even after restarting the machine, when there's no little or no ram usage and CPU usage is fluctuating between 0 and 30%, simple tasks, like opening Internet Explorer, or waiting for My Computer to open, take forever. There are no processes hogging system resources that we can see... the machine itself is just exhibiting extremely slow behaviour. I've never seen a machine do this. A lot of security updates had built up, so we decided to let Windows install them. When we looked through the history upon restarting, though, they had failed with error code 800706BA. I don't know if this could be related or not. Any help in this matter would be greatly appreciated. As mentioned in the title, we're running a Windows Server 2008 R2 machine. It's also running SQL Server and IIS. It has 16GB of RAM and a decent Quad Core processor. It's also been fine until now -- and we haven't changed a thing. Thanks for any help.

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• Deploy Jetty as port 80 daemon on Linux

  - by McKAMEY

  I'm curious what techniques you Linux admin gods are using to manage your Jetty deployments. I come from a Windows Server background so I'm still getting used to all of this. I've been looking for a good solution for deploying Jetty instances as port 80 on a Linux installation. So far I've seen this thread which allows Jetty to run as a daemon: http://jira.codehaus.org/browse/JETTY-458 And I've seen this thread which talks about alternates for setting up on port 80: http://wiki.eclipse.org/Jetty/Howto/Port80 These all seemed kind of hacky. Surely there is a relatively standard way of deploying a web server like Jetty on Linux. I'm currently using CentOS 5.5 but open to other distros. Thanks in advance.

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• How to remotely install Linux via SSH?

  - by netvope

  I need to remotely install Ubuntu Server 10.04 (x86) on a server currently running RHEL 3.4 (x86). I'll have to be very careful because no one can press the restart button for me if anything goes wrong. Have you ever remotely installed Linux? Which way would you recommend? Any advice for things to watch out? Update: Thanks for your help. I managed to "change the tires while driving"! The main components of my method are drawn from HOWTO - Install Debian Onto a Remote Linux System, grub legacy: Booting once-only, grub single boot and kernel panic reboot , and Ubuntu Community Documentation: InstallationFromKnoppix Here is the outline of what I did: Run debootstrap on an existing Ubuntu server Transfer the files to the swap partition of the RHEL 3.4 server Boot into tha swap partition (the debootstrap system) Transfer the files to the original root partition Boot into the new Ubuntu system and finish up the installation with tasksel, apt-get, etc I tested the method in a VM and then applied to the server. I was lucky enough that everything went smoothly :)

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• Server 2003 and SSL Certificates

  - by Keith Stokes

  I have a Windows 2000 domain with dozens of Windows 2000 servers and a few 2003 servers. Each server runs a custom app talking to a 3rd party utilizing self-signed certificates. To help troubleshooting we've created a custom test app. The 2000 servers are able to talk within seconds. The 2003 servers take anywhere from 10-30 seconds using a domain account and much less, usually under 5 seconds using a local account. The only exception to the local account performance is a new account, which is slow initially then faster. If you leave the test app open and reconnect repeatedly it talks in seconds. If you leave it open for sometime between 1 and 2 hours, it reverts back to the previous 10 seconds, so obviously something is caching. Installing the destination certificates in the local 2003 server store makes no difference. I've installed the certificates in AD and that apparently makes domain accounts work in 9-12 seconds, vs 30 seconds that was regular before. Manually clearing the certificate store on the 2003 server makes no difference. I'm at a loss as to where the certs might be cached and if I'm using some sort of domain certificate store that's hiding from me.

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• sql server 2005 instance unresponsive and all db's are 'in recovery'

  - by user44650

  we've got a sql server 2005 instance that one of our guys messed up, i believe they killed the sql server service and restarted the computer, and when it came back all of our databases are "in recovery" and it times out every time we try to connect to it. it's been 'in recovery'and unable to connect to 'msbd' (also in recovery) whenever we try to use SSMC, for the last 4 days now. i'm unsure how to use the DBCC CHECKDB command to check the db integrity. we have backups(which we can't recover from because it keeps timing out), and it's a testing server, so nothing in production is really lost. is there any way to get it out of recovery mode? we have another sqlserver instance running that's just fine, but this instance keeps timing out. the errors i keep seeing are database msdb is being recovered. wait until recovery is finished and an exception occurred while executing a transact-sql statement or batch Timeout expired. any thoughts? we don't really have a DBA here, or anyone with much sql experience.

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• linux ftp server with virtual users

  - by kjertil

  i know there are already similar questions for this matter but the answers doesn't really make much sense to anyone who is not really technically comfortable in Linux. I've already tried articles like these for example: http://howto.gumph.org/content/setup-virtual-users-and-directories-in-vsftpd/ with the result of accidently breaking the whole system. The problem is that, while there are several technical possibilities to set up virtual users with a FTP server, it is not as easy as managing for instance a Filezilla server on Windows. I've seen some Web based GUI's but most of them seems to be out of date. The different flavours of Linux and the large amount of different popular FTP servers also seems to make the matter more complicated. I guess my question is, is there a way, to set up virtual FTP users on Linux without the hastle of having to manually edit PAM, MYSQL and config files?

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• Minimal Linux distribution with sshd and apt

  - by Sergey Mikhanov

  When I signed up for my Debian Linux VPS hosting and first logged on and invoked ps, there was the only user process running: sshd. As I can see, this was minimal Linux with only two things installed and configured: sshd and apt (plus all dependencies, of course). I want to build (or use existing) similar Linux distro, any advice on how to build (or pick) one? Googling "minimum linux", or "linux with sshd only" usually brings up Debian's netinstall, which is not what I want. Thanks in advance.

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• printing in linux

  - by Neilvert Noval

  Hello all. I've been a linux user for quite some time. But haven't do printing until now. I just wanna ask how to do printing in linux? I have researched a bit on it. I found some $> echo "print me" > /dev/lp0, but unfortunately, I have no lp0 in my /dev. I don't know if this is the right thing to do. Nevertheless, please tell me of ways on how I can print from my linux box. Here are some details: OS: debian linux 5.0.4 printer: disclosed until it is necessary connection: usb connection So do i need to add a printer first? From the printer manual that I read, this printer model has no linux driver.

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• Script to mirror MS SQL Server databases between 2 servers

  - by David W

  Hi I have about 200 sites each of which have 2 servers running MSSQL (2k5 at some sites, 2k8 at others) One server is production and the other is primarily there as a backup. We're rebuilding all of these servers this year and as part of that we will have to set up mirroring for ... a lot ... of databases. Some of these sites have 45 databases so mirroring them manually is going to be a huge pain. I was going to write a batch script which uses SQLCMD to backup the database and log, copies to the secondary server, restores the backup and log with norecovery, creates the endpoints and sets the partner. This in itself isn't too complicated, but i'd love to see what other people have done as i'm not very confident in catching errors using the process i've outlined above. I've seen Tools to manage sql 2008 database mirroring? Which looks really good, but the formatting is jumbled and I can't get it to work. If anyone has any other scripts they've written and are willing to share I'd be eternally grateful. Ideally I'd love to be able to use a script to ensure there are matching endpoints (same ports) on both servers, backup the database, backup the log, copy the backups to second server, restore database and log with norecovery, set the partners on both servers, and somehow confirm that the databases are linked and synchronized. Well, thanks for reading :)

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• linux: upload / download difference on network shares

  - by Batsu

  I have a Red Hat Enterprise Linux 6 (with SELinux) which shows significant differences of speed between download and upload (the latter significantly slower) of files shared over the LAN. The bottleneck seems to be the output of the linux machine since I have a rate around 1Mb/s when WinXP machines download files shared (using samba) by the RHEL machine uploading files from the RHEL to a WinXP's shared folder while uploading from the XP machines to linux's shares downloading XPs' shares on the RHEL any share between Windows machines only run smooth (around 50Mb/s). Since the upload from RHEL to WinXP's share is slowed too I would exclude an issue in the configuration of samba. What could possibly determine this limit in the upload speed? update: iptables doesn't show any output rule and disabling it doesn't show any noticeable difference, so I would rule out it too.

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• SSD runs faster on Windows as compared to Linux [closed]

  - by wushugene

  Windows 7 seems to install, boot and run much smoother & faster than each the three linux distros I have recently tried (Ubuntu 12.04 unity, Linux mint 13 MATE, and Fedora 17 on gnome 3.4). Why am I facing bad performance in Linux? I have tweaked my Linux installs for the SSD (enabling trim, disabling swap, etc.) I'm using an Acer TravelMate with i5-2410m processor, intel hd 3000 graphics, 8 gigs of ram, and a 256 gb samsung 830 ssd. Edit: Boot times are 10-15 seconds slower, there is noticeable delay from login to fully loaded desktop, and in general does not appear to be as responsive as my old windows 7 install or the Linux guests I had running on it.

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• Terminal Server CPU usage at 100%

  - by Light1c3

  I'm running a terminal server with around 50-60 users,and every so often the server will go from 40% usage to 100%. I took a closer look an it seems every time this happens, a different user or two seem to be caught in a loop and end up using < 30% where the rest of the users only use a maximum of 5%. The company behind the software we use clame it's due to the servers inadequate hardware (It's a VM system running on a dual - quad core setup) which to me sounds like BS! I'm fairly new to this level of IT so if I misspoke I apologize. I have no way to prove it but I believe adding more raw hardware power wont do me any good as this to me seems like a bug in their software, and it will suck up as much ( or little) CPU as it's given. The VM in question has 4 vCPU cores and 12 GB RAM available, and is running Windows Server 2008, 64-bit Thanks in advance for your help! Note: I have the same question posted on SO, but was pointed in this direction so just in case, here is a link to the post http://stackoverflow.com/questions/17276602/termserver-cpu-at-100

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• Linux QoS (Skype / BitTorent / SIP / HTTP priority)

  - by Andre

  We are configuring a linux box that will act as internet gateway for an office of 30-50 computers. We are using iptables/HTB for traffic shaping. Is there a way to match traffic on L7 level? It's easy to identify traffic by TCP/UDP ports (like SIP and HTTP). But what if we are dealing with Skype & BitTorent? It was surprise for me that there is no powerful and matured sulution for tasks like this. I found only l7-filter (http://l7-filter.clearfoundation.com/) patch for the Linux kernel, but it's no longer supported (it seems to). Moreover it couldn't be compiled with modern Linux kernels. The only option I found was to use a Cisco router. Are there other ways to identify and shape Skype and Bittorent traffic?

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• How do I reduce RAM usage on my server?

  - by Abs

  I have recently launched a site that is very popular but I am having trouble with scalability. My site makes heavy use of FFmpeg and at peak times RAM usage hits the 2 GB point quickly and the swap file starts getting used. CPU usage starts rising too. Users complain that the site is slow. They say this because all FFmpeg instances run very slow because of the number running at the same time. Users make use of FFmpeg on my server in real time. Is there anything I can consider or do to ease down the usage of the server and RAM just shooting up? Maybe there is something better than FFmpeg (!). Is the only solution "throwing some cash" at a more powerful server? I have given little information, please ask for more, so this problem can be solved.

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• Can't boot Windows after installing Linux

  - by user4035

  I have a partition /dev/sdb1, where my old Windows XP resides. All the files are there intact and I can see them, mounting the disk from Linux. Linux is on /dev/sdb2. But when I choose Windows in LILO prompt, it doesn't load. I have the following lilo.conf: boot = /dev/sdb # Linux bootable partition config begins image = /boot/vmlinuz root = /dev/sdb2 label = Linux read-only # Partitions should be mounted read-only for checking # Linux bootable partition config ends # Windows bootable partition config begins other = /dev/sdb1 label = Windows table = /dev/sdb # Windows bootable partition config ends What can be wrong?

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• Fresher in Linux administration [closed]

  - by user127452

  i am fresher in the administration field & i just got the job as a linux support executive,though i have basic knowledge of linux .. the server handling,configuring & network related issues are a new part for me.So i am confuse for where to start with the basic requirement that linux admin should know & how to & from where to study about it .. we hav a 6 working days for +9 hours each ..so it is not possible to join any RHCE course or classes .. so please help me regarding to this issue as the there was no proper handoff is done from previous employer ... & now there is a lot work pressure on me ... so please suggest me something ... :)

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• Client side latency when using prediction

  - by Tips48

  I've implemented Client-Side prediction into my game, where when input is received by the client, it first sends it to the server and then acts upon it just as the server will, to reduce the appearance of lag. The problem is, the server is authoritative, so when the server sends back the position of the Entity to the client, it undo's the effect of the interpolation and creates a rubber-banding effect. For example: Client sends input to server - Client reacts on input - Server receives and reacts on input - Server sends back response - Client reaction is undone due to latency between server and client To solve this, I've decided to store the game state and input every tick in the client, and then when I receive a packet from the server, get the game state from when the packet was sent and simulate the game up to the current point. My questions: Won't this cause lag? If I'm receiving 20/30 EntityPositionPackets a second, that means I have to run 20-30 simulations of the game state. How do I sync the client and server tick? Currently, I'm sending the milli-second the packet was sent by the server, but I think it's adding too much complexity instead of just sending the tick. The problem with converting it to sending the tick is that I have no guarantee that the client and server are ticking at the same rate, for example if the client is an old-end PC.

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• SQL Server: Must numbers all be specified with latin numeral digits?

  - by Ian Boyd

  Does SQL server expect numbers to be specified with digits from the latin alphabet, e.g.: 0123456789 Is it valid to give SQL Server digits in other alphabets? Rosetta Stone: Latin: 01234567890 Arabic: ?????????? Bengali: ?????????? i know that the client (ADO) will convert 8-bit strings to 16-bit unicode strings using the current culture. But the client is also converting numbers to strings using their current culture, e.g.: SELECT * FROM Inventory WHERE Quantity > ???,?? Which throws SQL Server for fits. i know that the server/database has it's defined code page and locale, but that is for strings. Will SQL Server interpret numbers using the active (or per-login specified) locale, or must all numeric values be specifid with latin numeral digits?

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• Windows Server 2003 RDP not listening on IPv6

  - by Ian Boyd

  i have a Windows Server 2003 machine; with IPv6 enabled: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : newland.local IP Address. . . . . . . . . . . . : 192.168.1.244 Subnet Mask . . . . . . . . . . . : 255.255.0.0 IP Address. . . . . . . . . . . . : 2001:470:¦¦¦¦:¦¦¦¦:¦¦¦:¦¦¦¦:¦¦¦¦:¦¦¦¦ IP Address. . . . . . . . . . . . : fe80::224:1dff:fe86:fdf2%4 Default Gateway . . . . . . . . . : 192.168.1.1 fe80::250:bfff:fe91:955f%4 i can connect to IIS server using IPv, remotely and locally, using IPv4 and IPv6: > telnet 127.0.0.1 80 (connects) > telnet 192.168.1.244 80 (connects) > telnet ::1 80 (connects) > telnet fe80::224:1dff:fe86:fdf2 80 (connects) And TCPView shows that the server is listening on port 80: Note: This is useful to establish that Windows Server 2003 does have support for IPv6 services. And i can connect to terminal services, locally and remotely, using IPv4: > telnet 127.0.0.1 3389 (connects) > telnet 192.168.1.244 3389 (connects) But i cannot connect to RDP, locally or remotely, over IPv6: > telnet ::1 3389 (fails to connect) > telnet fe80::224:1dff:fe86:fdf2 3389 (fails to connect) We can see that the system is listening on 3389: Except why won't it listen on port 3389 (ipv6)? Unfortunately it's not the firewall. Aside from the fact that i'm connecting locally (in which case the firewall doesn't apply), the firewall doesn't apply:

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