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• How to install windows on a server with no CD or DVD drive

  - by user29266

  I've found a few posts on this site, however my situation is different. I have a new Dell server with no OS installed. I would like to install Windows 2008 Web Edition. I have a few USB ports and Ethernet. No CD or DVD drives. Is this article the best & only way to proceed? Installing Windows 2008 via USB thumbdrive or should I just get a external hardrive and hook it up to a usb. Once the OS is installed I'll never need a DVD drive again - so that's idea is a waste of money.

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• Proxying/Tunneling IPSec traffic via netcat or SOCKS?

  - by MattC

  I have a client that is using a SonicWall router as their VPN concentrator. I downloaded the client software and set up the router as a peer. My issue is that my company uses a dual DMZ setup, meaning we have an interior firewall, then a bunch of DMZ servers, then an external firewall, then finally the telco router. In this setup, the interior firewall has no way to communicate with the exterior firewall since they are on two totally separate subnets. The communication occurs through the servers that straddle the networks. In this case, I need some way to forward the ISAKMP/IPSec traffic from my desktop out to the Internet. My usual trick of using netcat on the intermediate proxy server doesn't work here since it's not TCP/UDP traffic as far as I can tell. All of my previous experience with VPN's have been using SSL-based VPN's which are clearly very easily proxy-able. Any help would be appreciated, thanks!

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• TCP/IP communication between Hyper-V host and guests

  - by Tedd Hansen

  This may be a simple one. :) I have a simple Hyper-V setup with a few guest os running. The host has 1 physical network adapter with a static IP assigned to it. The guests have network adapters assigned to "Internet" (Hyper-V network) which is bound to the physical host network adapter (Hyper-V "External" connection type). I am not able to communicate (ping or anything else) between guests and host. I've checked firewall and it seems fine (ports open from anywhere still don't work). I'm trying to communicate with the hosts IP assigned to the same physical interface that the guests are sharing. Guests can communicate between them just fine. I can't seem to find any relevant setting (I might just be missing it). So my questions: How do I fix it so host and guests can communicate?

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• Linux server failover

  - by Lukasz

  I have two Linux servers (CentOS6) - both are identically configured connected to the same switch with a direct link between them. I only have one external IP that is assigned to eth0 on both servers (connected to the internet switch) with the interface shutdown on server 2. How can I failover to server 2 if server 1 dies - as stated they are linked directly so they can check for availability of each other via ping/tcp/udp. I toyed with Heartbeat but the documentation seems to be non-existent - not sure how to bring up an interface and start some services if the other server dies.

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• Access to a network server without port forwarding

  - by SdevDavid

  I have a network with the following structure. The server in PC2 is simple socket server TCP in 8080 port. I need to access to PC2 from other external network by socket client. This socket client knows the public IP (85.xxx.xxx.x), the private IP (192.168.0.21) and the port. How I can access PC2 without port forwarding on the router? If possible, I would like to have a reference in any programming language of this case.

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• Can't burn 8.1G iso onto 8.4GB DVD - "Media does not have enough free space"

  - by Max Williams

  I'm trying to burn a dvd on a mac with an external (firewire-connected) dvd drive. I'm checking the size of the iso thus: DVD-4:dvd_files macbook$ ls -l /tmp/hybrid.iso -rw-r--r-- 1 macbook wheel 8700884992 Aug 22 10:57 /tmp/hybrid.iso DVD-4:dvd_files macbook$ ls -lh /tmp/hybrid.iso -rw-r--r-- 1 macbook wheel 8.1G Aug 22 10:57 /tmp/hybrid.iso The "human-readable" size is 8.1 Gig but when i try to burn, onto an 8.4G dual-layer dvd, it says "Media does not have enough free space" The definition of a "Gigabyte" according to Wikipedia is 1 billion bytes, so the iso size should actually be 8.7 Gig according to this definition, in which case the disk definitely isn't big enough, and it's just that the -h option to ls is misleading. Is the discrepancy just due to the ls command using a different definition of "G" (eg 1024 Meg aka 1.07 Gig? This comes out as 8.103 which fits what ls is displaying)

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• Windows PC's Intermittant Network faults.

  - by Kristiaan

  Hello everyone, im running into some issues with our client PC's (windows xp sp3 systems). this morning we ran into some problems with PC's not connecting to internal / external systems intermittantly. this would manifest as a problem connecting to any service, email, web, backoffice database systems etc. given a random amount of time be it a few minutes etc the problem would disapear and the pc would carry on as normal, some systems however have not been able to connect to certain sytems since the problem initally happened. im hoping for some suggestions / network diag advice really to help me locate the cause of this problem. all the clients are windows xp, connecting to a domain controller that is windows 2003 std this server also acts as a DNS server for us. we also have websense 7.0.1 installed on it to filter traffic.

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• JBoss behind NAT hostname problem

  - by z0mbix

  My company has a JBoss cluster sitting behind a firewall that performs NAT. We forward ports to JBoss from the firewall, so that our client application can access the server. We are having trouble when JBoss replies it tells the clients to connect to the internal hostname, not the external one with which the initial connection was made. Is this something that is easily resolved/configured? How are other JBoss app servers configured behind NAT firewalls? Split-horizon DNS? Many Thanks

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• OpenVPN on port 53

  - by TossUser

  I have an openvpn server setup on UDP port 53 on a public IP. All the connecting clients gets pushed external DNS servers such as 8.8.8.8 and opendns. Sometimes the resolution stops working on the connected vpn clients and I get strange packets in the openvpn log. Now my question is why is that? When a VPN client, let's say 192.168.1.22 does a DNS query that query should go to 8.8.8.8:53 and then an UDP response packet should be sent back to 192.168.1.22 on a high UDP port. Any ideas? Thanks

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• Software to create a virtual parallel port in Windows XP?

  - by drknexus

  I am writing a program that will eventually be used on a computer with a physical parallel port and will need to set certain pins high or low in order to signal to an external device. However, the development laptop I am using does not have any physical parallel ports and is too low powered to run a virtual machine. Is there any option available that will create a virtual parallel port within Windows XP? Ideally it would include a debug mode that would allow me to see what values have been pushed out on the parallel port.

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• getting Thunderbird rescan imap folder

  - by asdmin

  Since I got an external program (imapfilter) modifying my imap folder, thunderbird keeps loosing track of new messages. Messages are moved upon arrival in sub-folders, making Thunderbird unable keep tracking them - therefore I have no clue which folders to look for new messages, and newly created folders (even I subscribe them after creation) does not show up until I restart the mail client. Is there any extension or setting for Thunderbird which I could use to trigger re-scanning my folder tree? Please don't waste time on advices like restarting Thunderbird: takes a great amount of time, or "use Evolution (or any other mail client)", or use internal mail filters: they are not sophisticated enough or procmail/fetchmail: I'm arranging a remote imap server for good EXTENSION 1: even folders can be created in the background, without Thunderbird would know it has been created.

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• Remote access and local access same hostname

  - by cpf

  Hi serverfault, I have a server in a clients network, seperated from theirs with a router/firewall, the intention is to have this server available through one hostname (example.com) My idea is to have (at least) a DNS server in the outside, to have outside (out of the clients' network) access the internal server. The problem would at that point be the internal client (PC A) My question: What would I have to do to make something like this work? Is it even possible or already done? The goal is to not have to change anything on either PC A or PC B, while both should access the same "internal server" while surfing to "example.com" Perhaps adding logic to the DNS server would work (Detect the external IP of internal client [PC A] is the same as the IP for example.com - Give the local IP as reply?) Anyhow: Thanks for helping me think on this!

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• Postfix not receiving non-local mail

  - by Davis Sorenson

  I set up a server with Postfix/Dovecot on Linode/Ubuntu 10.04 according to this guide, admittedly I've never done this before. Local mail works just fine, but trying to send email to it from external addresses results in errors like this: Delivery to the following recipient failed permanently: <address>@ni-mate.com Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 553 553 Unknown recipient. (state 13). I honestly have no idea what to do or which configuration files/logs anyone needs to see.

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• What's the easiest way to move from one Macintosh to another?

  - by schnapple

  Here's the story: Company bought me a $599 Mac mini (as of this writing, 2.26GHz/160GB HD/2GB RAM) I have it set up to some extent with software for development Company decides it needs a second Mac for QA I convince company to buy the $799 Mac mini for the second machine (as of this writing, 2.53GHz/320GB HD/4GB RAM), let me have it for development, and let QA have the $599 Mac mini Company does just that, now I have both So, what's the best way to move from one of these to the other? Just set up everything on the second one and be done with it? Can I transfer things from the first to the second somehow? I'm running Time Machine backups to an external drive on the $599 Mac mini, if that helps. Also both of these will be on the network at the same time, other than renaming one of the machines are there considerations to be had there?

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• What do I need to use an XBOX 360 with my PC monitor and speakers?

  - by heishe

  I've been thinking about getting an XBOX 360, mostly for games on XBLA or some exlusive titles, since they're relatively cheap now to get used. But I'm a student and live in a small apartment that has no TV, and no place to put a new TV (money to buy one wouldn't be a problem), so I've been thinking to use the console with my PC monitor and my speakers. My monitor only has HDMI and VGA input (no direct DVI), so I'm guessing I somehow need to split the audio and video signals coming from the XBox (or does the XBox have a direct 720p VGA output + external connectors for my speakers?). What do I need to make this happen?

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• Windows 2008 R2 Not resolving IP's or domains

  - by InsaneAR

  I have two servers with Microsoft Windows Server 2008 R2 x64, and today I realized that one of them don't resolve IP's or domain names. If I ping the same machine IP, it respond, but if I ping an external IP (like 8.8.8.8 or any other) it does not work. The same with domain names. At Windows Event Viewer I'm having Warning 1014: Name resolution for the name timed out after none of the configured DNS servers responded THE SERVER HAS CONNECTIVITY, I'm connected remotely and the services and incoming traffic (like FTP, etc) are working OK. Things I've done & tested: Run Kaspersky Virus Removal 10 Restart/Turn off the DNS Client service Clean the hosts file Reboot the server Turn off the Windows Firewall (there's not another firewall) Quit or replace the current DNS servers I just can ping the same machine IP or the gateway! Can anybody help me?

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• Windows 7, how to get unlock (Press Ctrl+Alt+del) prompt on all monitors?

  - by Zugwalt

  I have a laptop that I keep shut in a docking station as I have two screens connected to the laptop and it cannot display to both of those AND its own screen. However, when my computer locks by itself (Not when I lock it using Ctrl+Alt+Del) the login prompt is ONLY on it screen (at least its there when I open it up) and my primary external monitor is off and my other one is all black. This means to log in I have to hit Ctrl+Alt+Del and blindly enter my password--which I don't mind too much, but would prefer if I could actually see the unlock/login prompt instead of typing on a black screen. Any way to have it show the login prompt on all monitors?

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• Sharepoint asks for NTLM credentials for every unique URL. How do I stop it?

  - by CamronBute

  I'm tasked with troubleshooting a problem we're having with a SP2010 site. The app is external, and there are several clients that must connect. Some clients are receiving a crazy amount of credential requests when trying to log on. It appears to ask for every unique URL (eg. every different picture, link, etc) and it won't stop. Other clients are having no problems. I cannot seem to replicate the issue, either. I'm attempting to replicate by restricting all settings (including cookies) on my own browser, but to no avail. I put the HTTP request under a microscope, and it's asking for NTLM credentials. The client is using IE8, and the browser is running in Protected Mode, but the browser settings cannot be determined... I'm guessing this is a webserver thing, simply because it appears to be an authentication thing. What might the problem be?

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• Can I use Veritias Storage Manager to provide HA storage using server-local storage?

  - by Paul

  I have a need to provide an high-availability ftp/http file repository. Upload will happne to one server, but the uploaded file must be immediately visisble on all other servers I can handle the failover of the servers themeselves using load balancers. But in the event of failure of one server, the other servers must see the same contents of the repository. Normally, I'd use a SAN for this, but in this case the data centre standards do not allow SAN/external storage - all storage will be local to the servers. Cam I use Veritas Storage Manager (or any other product) to manage mirroring hte contents between servers in this way? Or does that require a SAN? I couldn't tell either way from a quick look at the data sheets etc.

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• Postfix filter messages and pass to PHP script

  - by John Magnolia

  Each time a user signs up to our website through an external provider we get a basic email with the body contents containing the user details. I want to write a personalised automatic reply to this user. The actual parsing of the email body and reply via PHP I have already wrote but how do I go about configuring this from postfix? At the moment it is configured using a roundcube Sieve plugin where the email gets moved into a folder "Subscribe". Is it possible to create a custom action here? Debain Squeeze, Postfix and Dovecot

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• How can I pin point a USB file transfer bottleneck in Unix?

  - by HankHendrix

  I'm experiencing very slow data transfer speeds over USB 2.0 on my nix box and was wondering how I can pin-point the cause of the problem. I've looked into iotop and top but the cpu and mem figures look normal (compared to guides I have checked). The box which is affected is Ubuntu 12.04 32bit Server running on an Asus EEE 701 2G model and I am transferring from the OS over USB 2.0 to an external HDD (which transfers at 30MB/s+ on Windows 7 on other machine). I get rsync write speeds of 1MB/s from OS to USB HDD which seems ridiculously slow. These speeds are consistent with other USB HDDs and sticks.

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• Programmatically change height of the window more than the height of the screen in Mac OS X

  - by nezlooy

  Respected low-level users of Mac OS, please, help. I'm trying programmatically to change height of window of safari (or other window). I'm was trying used AppleScript and AXUIElementSetAttributeValue of Carbon, but none of these methods can't increase the window bigger than the height of the screen. But, the width changes without any problems. I guess I'd be starting with something like SetWindowPos with SWP_NOSENDCHANGING flag under Win32. Maybe, you can disable this functionality, which monitors the size of the window or completely shutdown the one who is responsible for it? Note that I want to do this programmatically from an external process - I'm not asking how to control just my own app's window size and position. Thanks.

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• How to export a list of addresses that email in my spam folder was sent to? [migrated]

  - by Hugo

  With a Gmail [email protected] address, you'll also receive email sent to [email protected] addresses, very handy for creating filters. I often [email protected] when signing up to websites, so if I end up getting lots of spam sent to that address, I know who to blame. But what's a good way to find a list of all username+anything@ addresses in my Gmail spam folder? I'd prefer to do this within the web client if possible. Next best is using external client such as Outlook or Opera mail but without having to download lots of mail if possible. I don't really want to download spam emails.

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• Where to look for regular scripts?

  - by fontan

  It seems to me that our server freezes every 30 days around noon due to the huge utilization of xvda data transfer partition - writes are 50 times higher than normally (according to the health monitor in plesk). This seems to me as the reason why the apache & co becomes instable as (for example) all apache's processes are waiting to write their log (according to the service's full status). I am, however, unable to find any scheduled task that would be executed during that period. I have checked both cron and anacron setup and there is only one monthly anacron task which is not executed (according to the /var/log/cron - and there is nothing unusual) around noon. Are there any other places where to look for periodical processes? (I am just about to ask server's provider the same question about any external maintenance run around this time but I don't expect them to run anything time/resource consuming during the day.)

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• Mount remote drive by port forwarding

  - by Anushka

  I have a windows 7 computer at home and a remote windows XP machine with an external USB drive attached to it. I would like to be able to copy files to and from home/the remote USB drive. The problem is that the only way of contacting the work computer is by first sshing into a different remote linux machine as there is a firewall that prevents direct internet connection. I can see two possible solutions but I don't know how to do them. Set up winscp using ssh port forwarding via the linux box so that I can copy to and from the two windows machines. I assume that I would need to run an ssh server on the XP machine as well to do this? Mounting the remote USB drive on the remote windows machine from the home XP machine via ssh port forwarding again via the linux box. Does anyone know how to do either solution?

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