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• VMWare Headphone Issue

  - by Ash_Geek_Pickney

  I am running VMWare Workstation Version 7 on a Windows 7 partition on a Macbook Pro. I have built a virtual XP machine within vmware to run some old music programs. The sound from my virtual machines comes out of my macbook speakers but the volume is not controllable using my macbook volume controls, only by using the volume control on the XP machine. My problem is that i need to use headphones, and when i plug a headphone jack into my macbook, the sound from my vmware virtual machines still comes out of the macbook speakers. I am baffled. Please help. Thanks in advance...

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• VMXNET3 nic loses the ability to update ARP table after N hours

  - by Peter

  I have a fedora 18 VM that stops updating the arp table on eth1 after running for a number of hours to days. There are other VMs on the same hypervisor that can access all of the same networks without issue. A tcpdump of the offending NIC shows only ARP broadcasts but no responses. None of the other VMs on the vDS see the ARP broadcasts from the offending NIC. The only way I can currently solve the problem is to reboot the VM and then everything works for a while. I've tried changing the port on the vDS and even flipping the network configurations after I lose eth1's ARP table, but the ARP problem follows eth1 but I can access the machines that were originally on eth1. If I statically add the arp entries for machines on the same subnet I have no problems with connectivity. The Hypervisor is an HP BL49X series with flex-10 network modules. Has anyone seen anything like this before?

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• Setting up a proxy for FTP - Windows

  - by RadiantHex

  Hi folks, I have 2 windows machines and a server. 1 is my laptop, the other is a workstation that the IP of which is white-listed on the server. The laptop has a dynamic IP, so the IP cannot be white-listed. I would like to be able to perform FTP transfers from my laptop to the server, while using the workstation as a proxy. Both machines are using Windows 7. Is this possible? Help would be amazing!

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• Monitoring CPU Usage Over the Course of a Day?

  - by bobber205

  Are there any apps I an install on client machines that will generate a report for me what app used what % of the CPU. We have some machines that are running, at times, VERY slowly. The machine will run really poorly then boom, back up to full speed. There isn't usually enough time to check Task Manager real quickly to see what is running, not to mention the majority of the time there are people using the computer that don't know what the Task Manager is. ;) It would be really nice to take a look at some logs and see if, maybe, the anti virus is randomly taking alot of CPU for stretches of time. Or another application. Thanks! EDIT: This is for Windows XP. Sorry for the oversight. :)

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• Virtualbox PXE Boot Failing with a Windows Server 2008 R2 Server

  - by Vbitz

  Some fast help on this would be good, I have been on this problem for 14 hours. In a Virtualbox test environment I have 2 virtual machines networked together using a internal network (no traffic runs though the host, it is all at a software level). One is a fresh client with 512mb of ram and a dual core set-up, the other is the server with 1.5GB of ram and running server 2008 r2. The server is configured as a dns server, dchp server, domain controller and also serves PXE booting though WDS (Windows Deployment Services). Both machines can see each other and I am able to start a network boot. The issue comes at the second to last stage of the pre windows PE install. On TFTP download of boot.sdi it starts it but stops during the boot process.

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• Help me a routing server on Windows XP

  - by Lu Lu

  I am developing client/server applications and need to test them on Internet environment. However, I only have one PC without connecting the public internet, so I have a plan to simulate a virtual internet environment on my PC. I think I will install the virtual machines for my purpose, but I can install only one machine because of my slowly PC. At the moment, my PC has 2 machines: the host machine (use Windows XP) & the virtual machine (use Windows Server 2003 Ent). Each machine will have 2 network adapter (host-only & internal), and in 2 network adapters, the internal adapter is private on each machine, and host-only adapters are connected together. With Windows 2003, routing server is ok, but I wonder on Windows XP, are there any routing server product? Please help me. Thanks.

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• AIX network parameters to close TCP sockets of unplugged devices

  - by ADD Geek

  Hi there We have an AIX box, running what we call in banking "ATM Switch" not the ATM networking switch, but the bank ATM driver. where we have some ATM machines connected to two server processes. The problem is, when we disconnect any of these machines, the netstat -na| grep <port number> command shows that the socket established for this disconnected device is still established, we have to manually send a command from the software to make the socket aware that it is not live anymore. Is there a parameter on tcp level to make this connection aware within a minute or two that this device is not connected anymore? we had the following parameters set with root privileges: no -o tcp_keepidle=1000 no -o tcp_keepcnt=2 no -o tcp_keepintvl=150 no -o tcp_finwait2=100 it was originally having the default values. but even after we changed these parameters and restarted the server processes, the problem was still there.

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• Is there any way to isolate the python2.7 , mod_wsgi installation from main environment

  - by user31

  I have many local virtual machines for building the django websites. I find it very hard to configure all the machines with mod_wsgi , python and all that installation issues. Is there any way that i can install even python 2.7 , mod_wsgi etc and all that inside the virtual environment folder so that i can just copy paste that folder in my live server and i don't need to mess with mos_wsgi , python 2.7 and other issues. Is it possible or even any close variation of that so that puting the site to live servers is very easy and everything which is needed by site should be included locally I also face many problems when i need to move the django sites across servers

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• How do I figure out what is changing the userWorkstations attribute in Active Directory?

  - by Martin

  I just took over the IT for a medium sized business with a three domain controllers (2003/2008 Standard) and whenever I create a new user, after some time the user account cannot log into most machines on the network. I have traced this back to the "Log On To..." area becoming populated with a small list of machines. Even when I set the option to all computers, this list comes back after some time. I started hunting for vbs and ps1 scripts with the word "workstations" in them on all domain controllers to see if there is some kind of script to blame, but I have thus far come up empty handed. Is there a known software suite that can cause this (Microsoft Forefront, etc)? How can I figure out what is causing this list to change?

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• Good option for a transparent internet gateway on Mac OS X

  - by Gareth

  Hi I have a small network of Mac systems, and would like to add some internal monitoring of our internet usage, which has recently begun to climb. I would like to configure one of the machines as an internet gateway, and install some monitoring software that could provide graph indications of network usage by machine. The machine would then double as a workstation and as the internet gateway. I can manually configure the machines on the network to use it as a gateway, and would prefer to avoid an explicit http proxy (although it is an option if necessary). What software would serverfault users recommend to provide simple, easily configurable and maintainable network monitoring on Mac OS 10.5.7 (non-server)? The simplest requirement is monitor usage by IP Address, but additional tracking (e.g. destination, protocol, etc) would be useful.

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• How best to backup 6x Win2k3 Servers

  - by saille

  We have a external HP LTO3 tape drive. It needs to backup 6 Windows 2003 machines every night. Servers are HP DL380 G3 and the tape drive is attached locally to one of them via SCSI. On a budget of $0, and a goal of keeping-it-simple, what is going to be the best way to backup these machines? What software to use? NT Backup? Or does HP have something better for free? We don't need image backups - file system + system state will be adequate. Do we need to copy the files to be backed up onto the machine with the tape drive attached? Edit: Let me ask a more focussed question: Would you use NT Backup or something else? No soap boxing please, we've after some quick advice from someone who's used a similar setup.

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• Disable Acer eRecovery system

  - by Joel Coehoorn

  The meat of this question is that I'm looking for a way to either require a password before using a recovery partition or "break" the recovery partition (specifically, Acer eRecovery) in a way that I can later "unbreak" only by booting normally into windows first. Here's the full details: I have a set of new Acer Veriton n260g machines in a computer lab. A lot work went into setting up this lab to work well - for example, Office 2007 and other programs needed by the students were installed, all windows updates are applied, and a default desktop is setup. All in all it's several hours work to fully set up one machine. Unfortunately, I don't currently have the ability to easily image these machines, and even if I did I would want to avoid downtime even while an image is restored. Therefore, I've taken steps to lock them down — namely DeepFreeze and a bios password to prevent booting from anywhere but the frozen hard drive. DeepFreeze is an amazing product — as long as you boot from the frozen hard drive, there is no way to actually make permanent changes to that hard drive. Anything you do is wiped after the machine restarts. It lets me give students the leeway to do what they want on lab computers without worrying about them breaking something. The problem is that even with the bios locked and set to only boot from the hard drive, these Acers still have a simple way to choose a different boot source: shut them down and put a paper click in a little hole at the top while you turn it on again. This puts them into the "Acer eRecovery" mode. This by itself is no big deal — you can still power cycle with no impact. But if you then click through the menu to reset the machine (we're now past the point of curiosity and on to intent) it will wipe the hard drive and restore it to the original state. Of course, a few students have already figured this out and reset a couple machines. That's unfortunate, but inevitable. I don't want to destroy the ability to do this entirely (which I could by repartitioning the drives to remove the recovery partition) but I would like a way to require a password first, or "break" the recovery system in a way that I can "unbreak" only if I first un-freeze the hard drive in DeepFreeze. Any ideas?

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• VPN/AFP server for centralized TimeMachine backups

  - by Keith Johnson

  I am a sysadmin for a small group of about 7 people who prefer Apple machines for their work. These machines are currently either a) not backed up at all, or b) backed up using Retrospect(Which I'm not very fond of). I don't really have the budget for anything fancy, and I'd like to keep it as user friendly as possible. Ideally I am thinking of a VPN server they can connect to(to keep the traffic secure, and because they work from home frequently) along with an AFP server for use with TimeMachine. The goal would be to get better backup coverage, along with user-initiated restores and overall ease of use. Does this seem like a reasonable idea? Has anyone done this before? Are there any obvious problems I've overlooked?

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• Best way to duplicate databases nightly?

  - by Margaret

  Hey all We just got two new servers, that are running Windows Server 2008. The intent is to make the machines pretty much identical, copying the content of the master to the slave on a nightly basis, so that if anything fails, the second copy can stand in immediately. It doesn't need to be up-to-the-minute mirroring, though I suppose that wouldn't hurt if performance is not affected. The two machines will, amongst other things, each be running an instance of SQL Server 2008. The aim is to duplicate the databases on the master down to the slave on a nightly basis. Unless I'm misunderstanding, the slave databases in mirrored databases require the primary to be present to work correctly; I'm hoping for some solution where we have a second machine that can be up and running with minimal downtime if the first one falls over. Am I misunderstanding mirroring? Is that the best way to do things, or should I use some other mechanism? If so, what?

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• Snow Leopard: Optimization

  - by Shyam

  Hi, I have bunch of questions: I have a Mac network, which has five Mac's. Right now, they are individually getting software updates. Is there a way to download the patches/security updates in a single place (repository) and point all machines to this location? Personally, I have tools like Monolingual and Onyx, but are there tools you could recommend that affect the performance of the Operating System positively? Tweaks would be nice. Links and pointers, would be really appreciated. I've read about Time machine, is there a way to backup all machines to a network drive using this tool? Thanks!

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• How do diff over ssh?

  - by Alexey Timanovsky

  How do I diff files/folders across machines provided that the only connectivity available is ssh?

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• Replacing a W2K3 Domain Controller - what do I need to know?

  - by Marko Carter

  I have a network of around 70 machines, currently with two DCs both running Windows Server 2003 (DC0 & DC1). DC0 is a five year old Poweredge 1850 and has recently become increasingly flakey, and in the past fortnight has fallen over twice. I want to replace this machine, but I'm cautious as there is huge scope for this sort of thing to go wrong. The way I imagine doing this is building a new machine then doing a DCPROMO and running three domain controllers for a month or so until I'm happy that everything is working as it should be before retiring the old machine. Particular areas of concern are the replication of roles from the current controllers (GP settings for instance) and the ramifications of switching off the machine that has, up until now, been the 'primary'. If there are compelling reasons to use Server 2008 I'm willing to do so, however I don't know if this would cause problems with my exisiting 2003 machines. Any advice on best practice or previous experiences would be most welcome.

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• Overcrowded Windows XP Folders

  - by BlairHippo

  I know that, technically, an individual Windows XP directory can hold an immense number of files (over 4.29 billion, according to a quick Google search). However, is there a practical ceiling where too many files in one directory starts having an impact on reads to those files? If so, what factors would exacerbate or help the issue? I ask because my employer has several hundred XP machines in the field at client sites, and the performance on some of the older ones is getting "sludgy." The machines download and display client-defined images, and my supervisor and I suspect that our slacktastic approach to cache management could be to blame. (Some of the directories have tens of thousands of images in them.) I'm trying to gather evidence to support or contest the theory before spending time on a coding fix.

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• Is there an Unobtrusive Captcha for web forms?

  - by KP

  What is the best unobtrusive CAPTCHA for web forms? One that does not involve a UI, rather a non-UI Turing test. I have seen a simple example of a non UI CAPTCHA like the Nobot control from Microsoft. I am looking for a CAPTCHA that does not ask the user any question in any form. No riddles, no what's in this image.

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• Nodes inside Cisco VPN. Incoming SSH requests allowed. But can't initiate an outbound SSH.

  - by Douglas Peter

  I've a gateway-to-gateway VPN setup between my Linksys RV042 router and a Cisco VPN. I am able to SSH into any of the machine inside the VPN from my network. But none of the machines inside the VPN can initiate an SSH into my network. It seems they've blocked even all ping requests to my network gateway. This is the requirement: I have scripts that SSH into the machines inside the VPN and run a long mysql query. The query generates an output to a file. The time that these queries take is variable. So I have a loop in my machine that periodically SSHes into the VPN machine and checks if the query has finished, and pulls the generated file using SCP. I need to simplify it thus: The script will run at the machine inside the VPN, and when the query completes, it will SSH into my machine and pushes the generated file. Thanks for any ideas.

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• Very low throughput on 10GbE network

  - by aix

  I have two Linux machines, each equipped with a Solarflare SFN5122F 10GbE NIC. The two NICs are connected together with an SFP+ Direct Attach cable. I am using netperf to measure TCP throughput between the two machines. On one box, I run: netserver and on the other: netperf -t TCP_STREAM -H 192.168.x.x -- -m 32768 I get: MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.x.x (192.168.x.x) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 32768 10.02 1321.34 The measured throughput is 1.3Gb/s. This is 7.5x below the theoretical maximum, and only 30% faster than 1GbE. What steps can I take to troubleshoot this?

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• Preparing computers for remote MSI installation in NT4 domain

  - by user40177

  We recently purchased EMCO Remote Installer to deploy MSI packages we're creating. We are still (unfortunately) in an NT4 domain, and when I try to deploy a package using domain's administrator credentials I'm getting "access denied". Under the "requirements for remote computers" section on the EMCO website (http://www.emco.is/products/remote-installer/requirements.php), it says that it requires remote machines to have: * Started services: Computer Browser, Remote Registry * File and Printer sharing enabled * Windows Installer 3.1 * TCP ports opened: 135, 139, 445 * UDP ports opened: 137, 138 Is there any way of scripting these changes? If so, could someone get me started? I have about 200 machines I need to get this working with. Thanks for all your help!!

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• Is it possible to use the MMM tool without virtual IP capability?

  - by Artem

  We are on a host (Serverbeach) that does not support Virtual/floating IPs until you reserve at least a half-rack, which is just a little more than we are willing to spend per month right now. We do have 2 machines in one of their datacenters, and I am using these 2 machines right now in the Master-Master in Active-Passive Mode just like done by MMM -- http://mysql-mmm.org/. I have just set them up and I managing them manually, with manual switch on the Web frontend to tell it to connect to the correct (active) master. Is there any way to use MMM without virtual IPs? Any other comments on this setup?

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• Strange behavior in networking between 64bit and 32bit

  - by Rob

  I'm having a strange behavior about my network setup. I have 2 laptops, one (Lenovo) with Windows 7 Professional 64-bit and another (Acer) with Windows 7 Ultimate 32-bit and a wireless router. I'm connecting these 2 using the router but with a strange behavior. I can ping both machines, as well as the router, but when i try to access their shared folders (\\computer_name\shared_folder) the connection starts to fail and I need to reboot both machines to get it working again. But this only happens sometimes, sometimes it works.

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• Simple active directory permissions issue

  - by Antonio2011a

  So I've created a domain controller (DC) as well as 3 machines (SQL-A, SQL-B, SQL-CORE). All are running Windows Server2008R2 (on virtualbox). I have successfully joined the 3 machines to the domain controller. Next I created a user in active directory called Kim_Akers who is a member of "Domain Admins", "Domain users", "Enterprise Admins" and "Schema Admins". However when I login to SQL-A for example as contso/Kim_Akers and then try and run something like the ServerManager.msc I can't do it due to lack of permissions "Windows cannot access the specified device, path or file. You may not have the appropriate permissions". What am I doing wrong that Kim_Akers doesn't have permissions to do this? Thanks.

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