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• Windows XP Blue-Screens And Reboots Instantly On Boot-Up

  - by ashes999

  My computer was running perfectly until yesterday; my internet suddenly died. Being wireless, I decided to reboot; now the computer doesn't boot. It shows the "Starting Windows" screen (safe mode loads several drivers), then it suddenly blue-screens and immediately reboots (I cannot read the blue-screen contents at all). I've tried safe-mode (with and without networking); no dice. I booted another HD with another XP install and ran scandisk on my HDs; no bad sectors, and even with auto-repair, it didn't fix the problem. Now what? What are my options to fix the broken XP install? I'm thinking: 1) Remove wireless card 2) Run XP install CD and repair installation 3) ???

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• How difficult will it be to switch DHCP from Windows 2000 to our network router?

  - by MetalSearGolid

  While I know a bit about networking, I am more of a programmer, and I have never set up a DHCP server. I have always allowed a router to assign IP addresses. However, my boss has asked me to switch out our old Win2k Domain Controller and DHCP server to a new server. The catch is that he wants to just use our router to assign IP addresses rather than have the new server do it. Is this going to be more than just disconnecting the old server? And if so, are there any documents or tips anyone can help me to make the transition a bit smoother? The new server will most likely have Windows Server 2008 R2. Any advice I can get on this matter would be greatly appreciated.

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• Load images in parallel - supported by browser or a feature to implement?

  - by Michael Mao

  Hi all: I am not a pro in web development and Apache server still remains a mystery to me. we've got a project which runs on LAMP, pretty much like all the commercial hosting plans. I am confused about one problem : does modern browsers support image loading in parallel? or this requires some special feature/config set up from server side? Can this be done with PHP coding or by some server-side configuration? Is a special content delivery networking needed for this? The benchmark demonstration will be the flickr website. I am too suprised to see how all image thumbnails are loaded in a short time after a search as if there were only one image to load. Sorry I cannot present any code to you... completed lost in this:(

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• Computer never connects to the internet automatically on startup?

  - by RawR Crew

  I have my Windows Vista laptop connected directly to the router via an ethernet cable, and every time I switch the computer on, the computer cannot connect to the internet. It comes up as limited or no connectivity, I am assuming because it has not been assigned an IP address by the router - not too sure if this is right. The problem is usually fixed either by performing a repair through the networking control panel or removing and re-inserting the ethernet cable. It will also connect without doing any of these if the computer is left idle for about 20 minutes. It will connect fine wirelessly without the need for any of this, however I would prefer to connect via the cable. Any ideas how I can fix this? I have replaced the ethernet cable and router already (identical model) but these haven't helped. Thanks for any help on this.

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• Sorting IPv4 Addresses

  - by Kumba

  So I've run into a quandary on sorting IPv4 addresses, and didn't know if there was a set rule in some obscure networking document. Do I do a straight sort on the raw address only (such as converting the IP address to a 32bit number and then sorting), do I factor in the CIDR via some mathematical formula, do I sort via the CIDR only (as if I'm comparing the network size and not the addresses directly)? I.e., normal math, we'd do something like -1 < 0 < 1 to denote the order of precedence. Given say, 10.1.0.0/16, 172.16.0.0/12, 192.168.1.0/24, and 192.168.1.42, what would be the order of precedence?

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• Reducing CPU load to absolute minimum [on hold]

  - by user191338

  I have had a couple of things gone missing I believe stolen in my shared apartment and want to run my laptop constantly with a webcam attached, running webcam surveillance software to record/ take pictures when motion is sensed. Id like to take whatever steps are necessary to be able to run the laptop constantly without the fan coming on, as its quite loud and even though it will be hidden it can be heard. Thus Id like to know what steps I can take to reduce CPU to the bare minimum for the laptop to boot up and run the camera software and send images via ftp / email when necessary. I have windows 7 installed, though I can reinstall it clean. Which are the windows services can I turn off, and more extreme disabling or measures of whatever kind which I can take. The OS would need to run the camera, wifi / networking. Thanks very much for any help.

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• ADD ROUTE command in windows 2008R2

  - by Mehrdad Kamelzadeh

  I don't know much about Networking, So excuse me if I am raising some basic issues. I have a LAN where there is a Windows Server 2008R2 with some clients connected to it. The clients are not joined to the domain of the Server (they are in a WORKGROUP). I have set up a VPS on the server machine (PPTP) with a Static address pool of range 10.0.0.1 - 10.0.0.10 but the LAN range itself is 192.168.1.1 - 192.168.1.254. When I connect to the server from another location over the internet, I can just see the server and I can not see the other clients which are in the same LAN as the server. what to do to see the other clients? a friend of mine said that you should use the ADD ROUTE command. Beacuse of that I used this command as my title. What would be the best way to address this problem? Thanks

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• How do I share a PHP 5.4 server between OS X and VMWare?

  - by Ben

  I'm running PHP 5.4 on OS X which allows me to set up a virtual server for any directory, using this Terminal command: php -S localhost:8000 This will then set up http://localhost:8000 which works great, but what I would like to do is share this server with the instance of Windows that I have running through VMWare in order to test in Internet Explorer. I was wondering if this is possible and if it is, how do I go about setting it up? Currently trying to visit http://localhost:8000 gives me 'This page cannot be displayed'. I'd really appreciate any help that you can give me on this as I don't have much experience with virtual machines/networking. Thanks in advance.

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• Virtualizing Firewalls/UTM

  - by TheD

  So Sophos UTM (Astaro Gateway UTM) can be virtualized in Hyper-V, VMWare, vSphere etc. Now I'm new to virtualization, so am wondering how the networking would be configured in this situation. Imagine the following (a very simple setup). A Zyxel router acting as the default gateway, standard ADSL line. This is connected directly via Ethernet to my VHost, Hyper-V in my case. Now I assume I need two virtual network adapters, one which is the "External" interface to the firewall, and the other being the "Internal" interface. But where does my switch go, since I have 5 machines (or X number of machines). Where is the switch connected, to the internal interface on the VHost? What default gateway do my clients use etc? How would the routing work if these two interfaces weren't bridged since they are virtual networks anyway. I'm a little confused! Any advice is much appreciated! Cheers

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• Toshiba Equium A110-252 laptop won't boot Windows.

  - by Drew Gibson

  I have a Toshiba Equium A110-252 laptop (XP Pro) which stopped booting a couple of weeks ago. The symptoms are that the laptop would display its DOS Toshiba splash screen, then the Windows (XP) boot screen would display, then a very brief blue screen flash, then back to the boot options screen (offering safe mode, safe mode with networking etc, last known good config, etc... none of these work). I assumed a duff HD, and swapped it for a new one and reinstalled from a TrueImage backup. This worked until I installed windows updates I think (the backup was a few months old), and now the PC is doing the same thing. I have installed a third, old HD (60GB) with Ubuntu 11.04 on it, and everything is fine. PC boots and runs Ubuntu beautifully. I need Windows running on it though ! Given these symptoms, could it a windows update issue ? Or might I have a hardware fault still ?

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• how to debug mysql has gone?

  - by fefe

  I have a virtual machine(Ubuntu 12.04, MySQL 5.5) running under VMware and is dedicated to host a mysql server. I connect to this server on internal IP. I'm trying to find out why I get mysql server has gone error. One my windows machines apache it stops because of this issue. I have been trying to fine tune my mysql my.cnf with the following parameters but did not bring the desired result. # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 0.0.0.0 # # * Fine Tuning # wait_timeout = 180 key_buffer = 384M max_allowed_packet = 64M thread_stack = 192K thread_cache_size = 8 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 500 table_cache = 64 #thread_concurrency = 10 # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 32M how to debug this issue what is missing from configuration to avoid this error?

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• VM clients can not access WAN

  - by Saariko

  I have a new VM host on my network, on a Dell R620. The dedicated iDrac is connected with static IP of: 192.168.3.x NIC #1 is connected to my router The eSXI 5.1 host is with IP of 192.168.3.250 The vSphere appliance has a static IP of 192.168.3.241 All the clients on the new host are in the same network 192.168.3.x All clients are Windows 2008 R2 My problem is that non of the clients can access the WAN. I can't ping anything which is beyond my router. I CAN ping anything within my router, even if it's on a different subnet - 192.168.0.x (Router rules are in tact and working) I can ping the gateway (192.168.3.254) One thing that I checked, and is bothering my (but don't know if it has any relevance) is that on the Host Networking properties, there is a vmnic0 (picture) that shows as if it only recognizes 192.168.0.x network - is that so? The command: route print shows me the following details, where I have a duplicate entry for 0.0.0.0 (and one is wrong) - which is probably also why it's not working

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• Python/Lesta.A worm

  - by Hanks

  My Nod32 have been catching something that is apparently identified as Python/Lesta.A worm. No matter how many times I tell Nod32 to delete and quarantine the file, it always re-appear, the situation will repeat about 3-4 times a day. This thing has been creating a folder called "pamela" in one of my drives, it sometimes also creates a "xxx.folder" file, which Nod32 identifies as "Exploit/CodeBase virus". I have Googled, and done pretty much everything related to this: a full scan in safe mode with no networking turned on, and also ran Ad-Aware, SpyBot, SpyHunter, ComboFix and cleaned the registry. Any idea how I can completely get rid of this annoying virus/worm?

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• Debian crashed, file system is read-only and cannot backup - How Do I find/mount a USB drive?

  - by Spiros

  We have a Debian server (vm's) here at work and the server crashed after a power failure. I can only boot the system in maintenance mode, and the whole file system is set to read only. I can run fsck though maintenance mode, however I would like to get a backup of some files before I do. Problem: I cannot access the net since there is no network connectivity in maintenance mode, and for some reason I try to add a USB flash drive to the computer but I can't find it through the console. Question: how to you find/mount a usb drive on Debian? I have tried several resources from the internet but nothing worked. Is there any other way I could get a backup of my files? I cannot start networking since the filesystem is set to read only. Any help would be appreciated.

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• netbook losing internet connection

  - by cometbill

  I have a netbook that occassionally, usually once or twice a day, maybe more, will lose its internet connection while I am on Skype (that's when I notice it most, it may happen more often). The little yellow dot appears over the networking icon in the system tray, which when I click on it says no internet access at the top of the popup menu, and next to the router connection that I have. Disconnecting and reconnecting usually rectifies full internet access again. I'm not sure if leaving it for any amount of time allows the netbook to automatically reconnect again. Everything seems fine with my laptop. I don't think this loses connection in the same way. I'm using Windows 7 home premium.

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• Cannot install wireless lan service on windows 2012 RTM offline

  - by user1763118

  I'm having trouble installing the wireless lan service offline with a fresh installed windows 2012 server RTM. I tried "install-windowsfeature wireless-networking" in the non-gui mode and using the server manager in the gui mode to enable the wireless lan service, but both of them show a "failure configuring windows updates" message after the installation restarted the system. I checked the event log and I think messages about "The WLAN Autoconfig service depends on the following service: nativewifip. This service might not be installed" are the source of the issue. Google shows it is a service called "native wifi filter", but I cannot find anywhere to install that service. I don't have a Ethernet adapter for that computer, so have to install everything offline before the wifi's working.

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• What kind of proxy acl rules should be applied?

  - by user42891

  I try to block sites in squid based on this article. Assuming you would want to block access to Yahoo (e.g http://www.yahoo.co.jp, http://www.yahoo.com, http://www.yahoo.co.in), you would ideally want to block all of the above URLs, if I use a regular expression and try to search something called yahoo it seems to get blocked. We are just interested in applying rules which would be most commonly used across all companies (e.g. social networking sites like facebook, orkut), porn sites (e.g. sex), gaming sites (games), movie & song download sites, and sites where they can upload data (e.g. rapidshare) What would be the common set of effective rules in achieving the above?

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• Network Role based routing

  - by Steve Butler

  Apologies my networking skills are a tad rusty. I'm looking for a way to setup a system that gives me the ability to setup Role-based access to specific network resources. For example, i have three private subnets for specific groups, users will need access to one one or more subnets. I'd like to have all client machines on the same subnet/vlan, and then use 802.1x to authorize into a router(NAC device/whatever), the router would then see what user had authenticated(huge plus if it could determine AD group), and then allow routing to one or more of the three private subnets based upon their group membership. I've looked at packetFence, and it appears to work by assigning a client to a VLAN, but i'd still need a way to route some users into different back-end networks.

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• Database for heat tolerances of various cables?

  - by I. F.

  Is there any kind of unified database of heat tolerances for networking cables? I've been setting up a number of home/small office networks lately and as a mostly-amateur I could really use some information on what is safe to run behind a radiator, next to a steam pipe, etc. The question I'm up against at the moment is: Can I run normal RJ11 phone line cable (from DSL modem to phone jack) behind a steam radiator without risking a fire? Unlike cat5, I could not find published standards for these, so I'm turning to experts with more experience. This is a cut-rate show. Do I go out and buy more cabling, and if so which, or use the spare that I have?

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• Wireless performance on Ubuntu 9.10

  - by Brian

  Is there something I should do to my networking configuration in Ubuntu to better the performance of my wireless connection? I'm on a netbook dual-booting Windows 7 and Ubuntu 9.10. I pick up much stronger wifi signal when in Windows than Ubuntu. As soon as I boot Ubuntu, it will connect to the network with a stronger signal, and then loses signal very quickly. After it dies, I can't reconnect. I've tested this on a couple of different networks with the same outcome.

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• What is needed for 'Previous Versions' to be visible on the client OS?

  - by Zoredache

  I have servers with Shadow Copies enabled taking snapshots a couple times a day. From the server, if you look at the local devices you can see the Previous Versions being populated reliably. But from remote clients, the ability for an end-user to see the Previous Versions seems to be very hit-or-miss. For the sake of this question you can assume that all my clients are Windows 7 and the Servers are Windows Server 2008 R2. Is there an exhaustive list of everything that is required for end user to see Previous Versions? Are their any requirements for a certain level of share or filesystem permissions, other then read access? Does something need to be open on the firewall, other then what is already in-place for normal Windows networking?

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• VM's, virtual networks and my home network.

  - by Jason Taylor

  I want to create a small lab of VM's to test out networking with. I have two PC's running VMWare and I need the VM's on these two PC's to be connected to their own LAN. I am planning on bridging the VM's into my home network. My home network and PC's are in the 192.168.0.0 range, but I want my VM's to be in 10.1.0.0. If I do it this way (Bridging the VM's on both hosts into the network) will the VM's be able to communicate? Will my home router freak out seeing two different subnets? Is there another, easier way to connect the virtual lan's on two vmware workstations together?

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• Can't get samba to see other PCs in Kubuntu 10.04 (Lucid)

  - by MaurizioPz

  I'm new to networking. I'm trying to share a folder between to computers (both have kubuntu 10.04 installed). I'm able to share a folder with samba and can see that folder through samba on the same computer. But if I try to go on the other PC I can't see the first one. Both PCs are on the "workgroup" workgroup. I've tried disabling the firewall with firestarter can somebody help me? thanks update: here's my samba.conf http://pastebin.com/SpuES468

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• HP Virtual Connect and VLAN Tagging

  - by JaapL

  We have a c7000 chasis with the ability to have 8 uplinks per ESX host. Only 6 are currenlty active. I have a Virtual Switch with multiple vlan port groups and all the VMs are working fine. Recently we've been asked to setup network load balancing for one of our VMs, so we had our Virtual Connect engineer activate the last two uplinks. We then created a new vSwitch and added the two new uplinks to this vSwitch. We then moved the VM to this new vSwitch, but we get no connectivity. What could be the issue? We also added the appropriate VLAN ID. The VConnect engineer says everything is configured correctly and networking TEAM says the appropriate trunking is setup, so we are at a loss...

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• SSD Performance for PHP?

  - by Andrew Fashion

  My programmer just built an application with PHP using Doctrine ORM (will be a high traffic social networking website), and it's very heavy in PHP/Apache and CPU. The queries are wonderfully fast, and MySQL is barely using any CPU, it's just Apache. I was curious to if an SSD would help speed up PHP/Apache, because I know the bottleneck is in PHP reading multiple files, class files, and loading up a bunch of data. So common sense makes me think if PHP is reading multiple PHP files, an SSD would only help as far as read/write? I was thinking of doing a high performance SSD for the PHP application, but for user image uploads, I would just continue using a 15k SAS. Is there any performance issues regarding using an SSD in this kind of situation? And would it prove to help speed up PHP/Apache, and help the CPU problem out?

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