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• VMware Server Host-Only Network Routing

  - by Chris

  I have a windows 2008 web server machine running VMware server. I have 3 VM's - All 3 are test servers so security isn't really a concern... each of them running windows 2008 standard and some of them serving web content. My ISP only allows one MAC address to access the physical switch, however they give me 10 public IP addresses to use. My question is, if I put each VM on their own Host only network, how can I route all traffic from a specific public IP on the host, to the corresponding host only adapter, therefore routing to the specific VM? For example: A single physical Adapter on the Host has the following public IP's assigned to it in windows networking: 74.208.14.10 74.208.14.20 74.208.14.30 Each VM is on a host-only network vm1 - 192.168.196.1 vm2 - 192.168.197.1 vm3 - 192.168.198.1 On the host, I want to route all traffic from 74.208.14.10 to VM1 and 74.208.14.20 to VM2 and 74.208.14.30 to vm3 without using VMware NAT, or bridged connections. I want each server to appear to have its own public IP address. My guess is i can modify the route tables somehow, or perhaps in ICS...but i'm not sure how.

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• i7 overclocking problem

  - by benwebdev

  Hi everyone, I've got an overclocked system that seems to be misbehaving. When trying to boot up from cold the system just hangs and nothing is output to the screen. Fans are on as they should but nothing happens to finish the boot. From here I have to switch it off then on again and the boot completes. If I go into the tweak menu in the BIOS I'm informed that a boot has failed I've been in touch with Overclockers UK support a bit and theres not yet been a solution. We've mainly been tweaking the voltage for the CPU. Any suggestions? I'm new to Overclocking which is why I got a bundle with OCUK. With this issue happening on Cold Boot too its tricky to test as I have to make a change then wait till the next day. My system is here: Intel Core i7 930 2.80Ghz overclocked to 4GHz Gigabyte X58A-UD3R (BIOS Version: FC) 6GB RAM Power Supply - CoolerMaster Silent Pro M series 700W One suggestion made by OCUK was that maybe its the power supply but I'm not sure and dont have a spare - it's brand new and a pretty expensive piece of kit. Any thoughts on this? Other recomendations for Power? thanks Ben

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• Building a Media Center PC with Comcast Cable...?

  - by Rob

  Alright - so this might be a stupid question but I've never been all that much into TV. I currently have Comcast cable. I've just got the 'basic' 2-60 package or whatever; I've just always plugged the cable into the back of my TV. I've never had a cable box. Recently, Comcast has been pulling channels off of my line-up. Most recently, the stole the TV Guide channel from me. I'm told this is part of a push to get customers to switch to their digital line-up. But, I'm also told it requires some sort of digital receiver for each TV you've got. I don't want to buy a bunch of these digital receivers and I don't want to pay the monthly rental fee...but I have heard of how awesome media center PCs are and some really cool things they can do. And, I've got loads of PC parts sitting around. So, can someone guide me through this a bit? Are there computer video cards or TV tuners that are going to work with Comcast's digital cable? What kind of price range are we looking at?

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• Move postfix maildir files from one mail server to another

  - by Tauren

  I have a new mail server configured as described in this howto: http://howtoforge.com/virtual-users-domains-postfix-courier-mysql-squirrelmail-ubuntu-9.10 I also have an ancient mail server configured very similarly (using the same HOWTO, just for Fedora Core 6, if I recall correctly). Earlier today I had to switch from the old server to the new one, and the old one is no longer online. However, after I had migrated everything and switched it all over, I discovered a bunch of undelivered mail in the queue. It got delivered to the local mailboxes on the old server, so now there are a bunch of messages on it that I'd like to move to the new server. The new server has already received new messages, so I need to merge the files together somehow. For each user with an email of [email protected], there are files like this on both servers: /home/vmail/customer.com/username/maildirsize /home/vmail/customer.com/username/courierpop3dsizelist /home/vmail/customer.com/username/new/1271481177.Vca01I6006bM580357.mailhost.mydomain.com Can I simply copy the hundreds of files in the various new directories on the old server to the corresponding new directories on the new server? Will the maildirsize and courierpop3dsizelist files get updated automatically, or do I need to do something to update them?

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• Swapping Function (Fn) and Control (Ctrl) Keys on Lenovo ThinkPad W500

  - by Howiecamp

  I'd like to swap the Fn and Ctrl keys on my ThinkPad W500 (like many others!). I wanted to comment on http://superuser.com/questions/35228/how-can-i-switch-the-function-and-control-keys-on-my-laptop and StackOverflow question 514781 (please Google it because I don't have enough rep to include 2 hyperlinks) but I don't have enough rep to do so to comment. Numerous folks (in both the above questions and on other Google searches) indicate that Windows doesn't register the Fn key as a keypress but using a tool that gives the ASCII value of a keypress (visit www mihov com / eng / am.html) I see the Fn key returning FF (perhaps FF in this case means 'not registered'). I also see that keys like Ctrl register with one ASCII code when pressed alone and another when pressed in combo with another key. Fn will only register when pressed alone, so Windows definitely isn't seeing the combo. This took a solution like AutoHotKey off the table. I ran KeyTweak (which shows you the hardware scan codes of a keypress and the Fn key registerd as 57443). Using this program I remapped Fn to the Ctrl key; this worked perfectly. However, I suspect that because of the issue in #1, the combo of, for example, Fn + C did not execute a copy. Short of retraining my pinky I'm actually considering removing the keyboard and resoldering the connections to swap those keys. I'd love to get some input as to the root technical issue(s) and possible solutions here. Thanks

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• Exchange Online SMTP Not Working With Any Email Client

  - by emre nevayeshirazi

  I am trying to switch our company mail server to exchange online. I have successfully added my domain and users and can send and receive mails through Outlook Web App. I can also send and receive if I configure my Outlook 2013 client using Exchange protocol. However, some folks in company are using Thunderbird and some old Outlook Clients. For those, I tried to connect to Exchange via IMAP/SMTP. This is what I use, For incoming, IMAP / Port : 993 with SSL / Host : outlook.office365.com For outgoing, SMTP / Port : 589 with TSL / Host : smtp.office365.com I can receive emails, however I could not be able to send emails. I keep getting An error occurred while sending mail. The mail server responded: 4.3.2 Service not active. Please verify that your email address is correct in your Mail preferences and try again. My username and password are correct, I am using my mail address as my username to mailbox. I also tried sending mail via C# application which was working for outlook.com and gmail.com SMTP settings. It also fails to send emails and returns the same error code. I thought TB and other old clients such as Office 2003 might not support Exc. Online so I tried same settings in Office 2013. It successfully connected my mailbox when checking for configuration but failed in sending test message and returned the same error code. Configuration for incoming and outgoing mailbox are taken from here. They are also available on Office 365 user page and they are same. What could be the reason for error ?

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• IIS7 - Web Deployment Tool - SetParam/SetParamFile to set http and https bindings + Cert

  - by Andras Zoltan

  Hi, we're currently using the MS Web Deployment Tool to sync a live website and some WebServices from a staging box to two live servers. The staging box hosts the site on any IP on port 17000, whereas the two live servers are load-balanced and have a different IP for each of them. At present, I generate two separate packages for deployment - one for each machine - using the sync operation and specifying a DestinationBinding parameter as follows: msdeploy -verb:sync -source:WebServer,computerName=localhost -dest:package="machinename.zip" -setParam:type="DestinationBinding",scope="SiteName",value="ip_address:port:". (Split across multiple lines to make it easier to read!) I run this twice, with a different target filename and ip address for each of the two machines. When it comes to deployment, I simply do a sync from each package to its respective live site. I know, I know - I should be able to do it by generating one parameterised package and then perhaps using the SetParamFile switch for each of the two Servers - believe me I'd like to, but the documentation on doing this is frankly non-existent. Now I need to configure and deploy both HTTP and HTTPS binding for this site; including also the ssl cert that is to be used. I've added an SSL binding for the site on the staging box - which uses a development cert (which will need to be replaced - or should the staging box be using the live cert?), and now the above command line has the effect of replacing the target IP on both http and https entries. It appears that I cannot specify multiple bindings plus the cert information in the DestinationBinding value in the -setParam above, so anyone know how would I go about doing this? Any help greatly appreciated.

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• How have multiple web servers and IPs on the same physical network

  - by jsigned

  I do web development out of a small office and need to have multiple physical and virtual servers that can be accessed from the internet. I also have a number of devices (computers, laptops, tablets, printers, etc) that need connections as well. I have gotten a subnet of 8 IP's from my ISP and while that is adequate for the web servers its far too small for everything that needs access to the network. My router is an ASUS RT-N16 running DD-WRT. I'm just smart enough about this routing topic to be dangerous, think 2 year old with a magic marker. I would like to keep my internal network NAT'ed on the 192.168.x.x network and route the 68.69.x.x 255.255.255.248 traffic directly to the servers. The physical network consists of the 4 port DD-WRT router and an unmanaged gig switch. I have a fiber connection to the office that works as an Ethernet port. In other words I can plug my laptop directly into it and have access to the internet. There is no login or password and the router is setup to get DHCP from the ISP, and to provide DHCP addresses for the internal network. What I've done so far is google and try different configurations with little success. In the end I decided I didn't even know how to ask the questions needed. My questions are: Is this the best way to configure the network? How do you do it? VLANs? Multiple routers? I've never had to configure a router using anything more than the GUI so if this is command line stuff be gentle.

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• Why does Windows 7 always automatically change the input or keyboard language?

  - by B-Ball

  I am wondering why Windows 7 always automatically changes my input or keyboard language. I've a notebook with an integrated QWERTY keyboard English (United States). Traveling, I use that one but, additionally, I've my own as well as a much better keyboard at home which is a QWERTZ keyboard German (Germany). Thus, being at home, I'd like to use my QWERTZ keyboard. Unfortunately, Windows 7 does not play along at this one. Every time, I start up my notebook, it is usually set to English (United States) but that's not the problem. In case, I'd use my notebook QWERTY keyboard English (United States), that's fine. However, if I start up my notebook and I'd like to use my QWERTZ keyboard German (Germany), I usually press ALT + Left Shift in order to switch from English (United States) to German (Germany) and Windows 7 switches the input language but only for the program that is currently open. If my input language is set to German (Germany) and I, e.g., open NotePad, Windows 7 automatically switches my input language to English (United States). This is very annoying since I've to change the input or keyboard language to German (Germany) every time I open up a new program. Why doesn't Windows 7 stay with one input language if I changed it manually by pressing ALT + Left Shift? Why doesn't the manual change of the input or keyboard language apply for the whole Windows 7? Why does it only affect the currently opened program? Since I've two keyboards with two different layouts, I seriously need to have both of the keyboards languages installed. I tried both of the below settings in order to find a solution for my problem. Currently, I am using the first option, two input languages. First option: two input languages: Second option: two keyboard languages:

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• FreeBSD slow transfers - RFC 1323 scaling issue?

  - by Trey

  I think I may be having an issue with window scaling (RFC 1323) and am hoping that someone can enlighten me on what's going on. Server: FreeBSD 9, apache22, serving a static 100MB zip file. 192.168.18.30 Client: Mac OS X 10.6, Firefox 192.168.17.47 Network: Only a switch between them - the subnet is 192.168.16/22 (In this test, I also have dummynet filtering simulating an 80ms ping time on all IP traffic. I've seen nearly identical traces with a "real" setup, with real internet traffic/latency also) Questions: Does this look normal? Is packet #2 specifying a window size of 65535 and a scale of 512? Is packet #5 then shrinking the window size so it can use the 512 scale and still keep the overall calculated window size near 64K? Why is the window scale so high? Here are the first 6 packets from wireshark. For packets 5 and 6 I've included the details showing the window size and scaling factor being used for the data transfer. Code: No. Time Source Destination Protocol Length Info 108 6.699922 192.168.17.47 192.168.18.30 TCP 78 49190 http [SYN] Seq=0 Win=65535 Len=0 MSS=1460 WS=8 TSval=945617489 TSecr=0 SACK_PERM=1 115 6.781971 192.168.18.30 192.168.17.47 TCP 74 http 49190 [SYN, ACK] Seq=0 Ack=1 Win=65535 Len=0 MSS=1460 WS=512 SACK_PERM=1 TSval=2617517338 TSecr=945617489 116 6.782218 192.168.17.47 192.168.18.30 TCP 66 49190 http [ACK] Seq=1 Ack=1 Win=524280 Len=0 TSval=945617490 TSecr=2617517338 117 6.782220 192.168.17.47 192.168.18.30 HTTP 490 GET /utils/speedtest/large.file.zip HTTP/1.1 118 6.867070 192.168.18.30 192.168.17.47 TCP 375 [TCP segment of a reassembled PDU] Details: Transmission Control Protocol, Src Port: http (80), Dst Port: 49190 (49190), Seq: 1, Ack: 425, Len: 309 Source port: http (80) Destination port: 49190 (49190) [Stream index: 4] Sequence number: 1 (relative sequence number) [Next sequence number: 310 (relative sequence number)] Acknowledgement number: 425 (relative ack number) Header length: 32 bytes Flags: 0x018 (PSH, ACK) Window size value: 130 [Calculated window size: 66560] [Window size scaling factor: 512] Checksum: 0xd182 [validation disabled] Options: (12 bytes) No-Operation (NOP) No-Operation (NOP) Timestamps: TSval 2617517423, TSecr 945617490 [SEQ/ACK analysis] TCP segment data (309 bytes) Note: originally posted http://forums.freebsd.org/showthread.php?t=32552

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• SPDIF passthrough not working in Windows 7

  - by adriangrigore

  Hi, I'm running Windows 7 on a computer with an Audigy Platinum eX sound card connected to a surround receiver via optical cabling. Sound works fine when listening to non-surround audio sources, such as windows sounds or MP3. However, when I view a DVD in Media Center and the SPDIF passthrough kicks in, I can only hear an awful noise instead of the movie soundtrack. Also, the receiver does not show the Dolby Digital or DTS symbol, but stays at Dolby Prologic, so it seems it doesn't identify the sound encoding properly. I could switch off SPDIF passthrough and use the sound card's decoder instead, but that's not an option for me since it would create more problems with regular MP3 playback via additional Stereo Receiver which is also connected to the same sound card. I've tried both the default Audigy drivers that come with Windows 7 and the latest drivers from the Soundblaster website, but the problem remains unchanged. Also, I have ensured that the receiver's Dolby Digital decoder is not broken by successfully connecting it to my PS3 to view a Dolby Digital DVD. Besides, SPDIF passthrough was working fine in Vista before I upgraded to Windows 7. Is there anything else I could try?

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• Need Routing help (tagged/untagged)

  - by TheCleaner

  I really need some help trying to figure some "basic" routing. My brain is fried from being sick for a week and I'm not thinking clearly. Picture below describes my "setup". I'm trying to accomplish routing a user from their workstation to the Juniper SSG520 and then "OUT" through the internet connection. I can't move the connection as it is physically located where the user's switch is. Here's what I CAN do at this point: I can ping from the Juniper SSG520 eth3/3 to 6x.xxx.253.116 from 6x.xxx.253.114 I can ping from the x450 in the top right to 6x.xxx.253.112 from 6x.xxx.253.116 What I CANNOT DO: I cannot ping from the SSG520 eth3/3 to 6x.xxx.253.112 from 6x.xxx.253.114 (basically from the Juniper box to the gateway. I've tried changing port 1 in the x450 VLAN 666 as tagged but when I do that then I can't even ping from the Juniper SSG520 eth3/3 to the VLAN on the x450 (6x.xxx.253.116). I need to route traffic out the eth3/3 interface on the SSG520 THROUGH the 2 x450 Switches and out the internet connection. The caveat is that the 2 x450 switches are connected via fiber over distance and have tagged VLANs in them for the routing. Thoughts? http://img251.imageshack.us/img251/7752/drawing1.jpg

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• DD-WRT (WRT54G) and (THOMSON TG782) how to put them togather?

  - by FeRtoll

  Ok so let me explain, i bought WRT54G and successfully installed DD-WRT v24-sp1 (07/26/08) mini-special - build 9994. That's all ok no problems with it all normal functioning. And just to add (i don't need wireless, wireless is turned off always) What i want: ISP's router (TG782) from it's INTERNET port(out) cable "which was before in my pc" is connected to WRT54G's INTERNET port and then from WRT54G LAN port 1 to my pc. The problem: How do i connect and setup all? I have tried many times on many different ways but cant get it to work IF THE CABLE FROM TG782 IS CONNECTED TO WRT54G ON INTERNET PORT. If i connect the TG782 to Lan port 1 on WRT54G and my pc to lan port 2 then all works fine after i setup gateway and all. But i want to connect TG782 to Internet port of WRT54G because i need "Access Restrictions" and this only goes through WAN right? please correct me if i am wrong. What i have tried: This is how i have tried to setup all. The TG782 router ip is 192.168.1.1 And WRT54G ip is 192.168.1.30 so in WRT54G control panel i have setup like this: ----WAN Connection Type---- Connection Type: Automatic Configuration - DHCP STP: Disabled ----Router IP---- Local IP Address: 192.168.1.30 Subnet Mask: 255.255.255.0 Gateway: 192.168.1.1 (the TG782) ----Network Address Server Settings (DHCP)---- DHCP Type: DHCP Server Start IP Address: 192.168.1.100 Maximum DHCP Users: 6 And this wont work i probably miss something more, if anyone can help i would be thankfull. Also i have to note that i have tried to set my network adapter on pc to use the gateway of WRT54G and ip 192.168.1.102 In short: i cant get it to work normal only as a switch! Thanks for any help! -------EDIT:------- Here is an image which maybe can help: http://img27.imageshack.us/img27/4227/allin1w.jpg

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• Acer LCD says "no signal"

  - by Ken

  I have an Acer 24" LCD (model "AL2423WDR") that's about 3 years old. It worked perfectly for most of its lifetime so far. Recently it started giving problems. When I turn it on, it either says "no signal" on the display, or the power light goes yellow (as if in power-saving mode). This happens with both DVI and VGA (both of which worked fine before), and stranger still, the 4 buttons on the front, for accessing the on-screen menus, don't do anything. I've also tried different computer hardware and software (PC/Mac, Linux/MacOS), but nothing has worked. I've tried power-cycling it (with both the power button and the power switch), and also unplugging it entirely. The nonworking buttons suggest to me an issue with the firmware. I found a place on Acer's website that says I can send it in to have it fixed, at my expense, but I'll avoid that if I can. Is there a way to fully reset it manually? Or is there something else I can try?

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• WSUS trying to download all updates again

  - by Tim Alexander

  The server hosting WSUS had a catastrophic failure and we have had to rebuild the system drives. Luckily the DB and content store for WSUS are on a seperate drive so were unaffected. During the rebuild process we thought it was time to update the server to 2008 R2 (from 2003 R2). Have got the server running and installed the WSUS role, detached the DB form SQL Express 2008 R2 and attached the original. Carried out the wsusutil.exe movecontent command with a -skipcopy switch pointing to the original content store. All looked good until I saw the front page stating it is trying to download files for 6,436 updates at around 344,565 MB!!!!!! Oops, I thought, something not right here. The content store I have on disk is only 75GB but I am thinking that some vital step has been missed in the restoration process. Either way is there a way to make WSUS reindex its local content store or something as I am unsure that downloading 344 gigabytes is a viable way forward! EDIT: Never rains but it pours. AM now getting a CLSID: FX {8b6499ed-0241-e032-6508-da4b1c879d7e} error could not create snap in. think a reinstall of WSUS is in order.

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• Move an existing RAID 5 array from Ubuntu to Gentoo

  - by Cocoabean

  I have a 64-bit Ubuntu machine with a 4-disk RAID 5 using software raid (md). I've been able to boot an Ubuntu LiveCD and recognize the array with a simple mdadm -A /dev/md0. It was easy to mount after that and nothing had to rebuild. I'm installing Gentoo on this box now (multi-boot, non-RAID root partition) and I have md auto-detect turned on in the kernel. When I boot Gentoo I get: "invalid superblock magic on sdd" for each of the drives in the array. I boot back to Ubuntu and they mount no problem. I tried copying the mdadm.conf that works in Ubuntu to Gentoo, and then ran mdadm -A /dev/md0 but it reports that there is no array named md0. I don't want to lose data (obviously) and I don't want to have to let the RAID rebuild every time I switch between OSes. Any help is appreciated. Both are using mdadm 3.1.4 Both are running 64-bit kernels. mdadm -D /dev/md0 from Ubuntu yields: http://pastebin.com/5gj2QNkV UPDATE: After rebooting I noticed that it still complains about invalid blocks, but cat /proc/mdstat shows an inactive /dev/md127 with the same disks as my raid. I want to mount it but I don't want to get stuck waiting for a rebuild or destroying it inadvertently. mdadm -D /dev/md127 Here is pastebin of mdadm -D /dev/md127 on gentoo: http://pastebin.com/gDCWn0Rn UPDATE II: dmesg output about 'invalid raid superblocks' http://paste.ubuntu.com/885471/ fdisk -l from Ubuntu, /dev/md0 does not have any partitions but I do have it mounted and accessible: http://paste.ubuntu.com/885475/

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• Routing for Two Hosts Behind a IPSec Tunnel

  - by Brent

  Network A 10.110.15.0/24 Firewall is .1 Host A is .2 Network B 10.110.16.0/24 Firewall is .1 Host B is .2 Two Cisco ASA's. IPSec tunnel with a crypo map that secures 10.110.15.0/24 <- 10.110.16.0/24. Let's say two hosts, 10.110.15.2 and 10.110.16.2 need to talk to each other. Normally I have to enter a persistent static route on a each host along the lines of: route add 10.110.16.0 mask 255.255.255.0 10.110.15.1 metric 1 -p (on the "A" box) I also have to enter another persistent static route on the .16 host in order for the traffic to know how to get back to the .15 network. Note that the default for each machine IS the firewall, so .1. I have no problem adding persistent routes on Windows/ESX/*nux machines but what about a smart switch in the .16 network that I want to manage from the .15 network. Do I need to run a routing protocol? Do I need to have Reverse Route Injection enabled on both ends of the IPSec tunnel? Should I add a route on the firewall? If so, how do you formulate it? Does it get a metric of 1 and my default route 0.0.0.0 get a metric of 2?

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• Creating basic, redundant gigE or IB storage network for Xen?

  - by StaringSkyward

  With only a modest budget, I want to move my 4 xen servers over to network storage -either NFS or iSCSI which will be determined based on how well it performs when we test it (we need good throughput and it must continue to work through link and switch failure tests). We may add another couple of xen servers at some point when this is done. I don't know much about the design and operation of storage networks, so would really appreciate some hints from those with experience. The budget is around $3,800 excluding the storage appliance. I am currently thinking these are my options to remain on budget: 1) Go for used infiniband hardware and aim for 10gb performance. 2) Stick with gig ethernet and buy some new switches (cisco or procurve) to create a storage-only ethernet LAN. Upgrade to 10gigE later but try to use hardware capable of it where possible to reduce upgrade costs. I have seen used, warrantied infiniband switches at reasonable prices (presumably because big companies are converging on 10gbit ethernet?) and the promise of cheap 10gb is attractive. I know nothing about IB, so here come the questions: Can I buy 2 x switches and have multiple HBAs in my xen and storage nodes to get redundancy and increased performance without complexity or expensive management software costs? If so, can you point me to some examples? Do NFS and iSCSI work just the same regardless? Is IB a sensible choice or could/should I use ethernet or FC on the same budget - I'm keen not to get boxed into a corner for future upgrades, however. For the storage I am likely to build a storage server using nexentastor with the intention that I can later add more disks, SSDs and add another server to provide a failover option at the storage level. An HP LeftHand starter SAN is also under consideration, too. Thanks in advance.

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• Best way to convert episodic DVDs for Windows Media Center?

  - by Roger Lipscombe

  I'm archiving my DVD collection. My goal is to be able to play them back in Windows Media Center. For feature-length DVDs, I'm using AnyDVD and CloneDVD, which is working well. For playing back TV shows (and other episodic content), I'm using Media Browser, which doesn't support a VIDEO_TS folder per episode. It expects the shows to be broken up into one file per episode (e.g. "Willo the Wisp - S01E12.avi"). For this, I'm attempting to use Handbrake, which, for extracting the episodes from DVD (or already-ripped VIDEO_TS folder), is working pretty well. The problem that I have is that the default x264 encoder over-compresses the resulting video stream, which results in hideous artifacts in animated shows. The aforementioned Willo the Wisp is a particularly bad example, because the original DVD is particularly "noisy". If I switch to using the ffmpeg encoder, the artifacts are gone in Windows Media Player, but I can't get the resulting files to play back in Windows Media Center. I see the first frame, and then there's an error message. I've installed the CCCP codec collection, but it doesn't seem to have made any difference. So: what's the best way to convert VIDEO_TS to individual episode files for playback in Windows Media Center?

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• Load Sharing Regarding Large Websites

  - by JHarley1

  Hello, I have a question regarding Load Sharing for large websites. My Understanding: So if you have a website that has millions of fits a day you will need to have an architecture that can support this sort of pressure. You can either do one or two things: Invest in a single large server that has huge amounts of processing power, memory and storage (such as Microsoft's TerraServer). Spread the load of your website across a number of machines. Let me tackle the second approach, so you have a collection of machines all running Web Server Software and all having access to identical copies of the websites pages. You can either spread the load across these machines using a cyclic pattern in a DNS or you can use a Load Ballancing Switch. The advantages of this approach is: - Redundancy - servers can fail and the others would "pick up the slack" - Incremental - the ability to easily add new machines to this set-up. My Question's Is there a Virtual approach to this issue of load balancing now? If the website runs from a database - is there still only a single copy of the database? If a user had a session running on one Server (e.g. they had gone to www.example.org and had been assigned to Server 2 - were they had created a session) if they refreshed the website (and were allocated Server 3) would they still have their session? What are the other disadvantages associated with Load Balancing? Many Thanks, J

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• nconf deployment.ini configuration for a basic Nagios server on CentOS 6.2

  - by jshin47

  I have set up nconf and Nagios but I cannot figure out how to configure deployment.ini to properly deploy the generated configuration to /usr/local/nagios/etc. Here are the directory listings of interest: [jshin@nag0 tmp]$ ls Default_collector global [jshin@nag0 tmp]$ cd Default_collector/ [jshin@nag0 Default_collector]$ ls advanced_services.cfg hostgroups.cfg service_dependencies.cfg services.cfg host_dependencies.cfg hosts.cfg servicegroups.cfg [jshin@nag0 Default_collector]$ cd .. [jshin@nag0 tmp]$ cd global/ [jshin@nag0 global]$ ls checkcommands.cfg contacts.cfg misccommands.cfg timeperiods.cfg contactgroups.cfg host_templates.cfg service_templates.cfg [jshin@nag0 global]$ cd .. [jshin@nag0 tmp]$ cd /usr/local/nagios/etc/ [jshin@nag0 etc]$ ls cgi.cfg htpasswd.users nagios.cfg objects resource.cfg [jshin@nag0 etc]$ cd objects/ [jshin@nag0 objects]$ ls commands.cfg localhost.cfg switch.cfg timeperiods.cfg contacts.cfg printer.cfg templates.cfg windows.cfg Here is my deployment.ini (pretty much the default setting) ;; LOCAL deployment ;; [extract config] type = local source_file = "/var/www/html/nconf/output/NagiosConfig.tgz" target_file = "/tmp/" action = extract [copy collector config] type = local source_file = "/tmp/Default_collector/" target_file = "/usr/local/nagios/etc/Default_collector/" action = copy [copy global config] type = local source_file = "/tmp/global/" target_file = "/usr/local/nagios/etc/global" action = copy reload_command = "service nagios restart" What I am wondering is why the directory structure that the default deployment.ini seems to suggest, with Default_collector and global, is different from the one that Nagios has by default, with only a folder called objects. What am I missing? Or more importantly, how does your deployment.ini look?

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• Multiple Internet connections, multiple networks and split access in Linux

  - by Swapneel Patnekar

  I am having trouble setting up multiple internet connections for split access in Linux. We have 3 internet connections from 3 different ISP's. We want to configure our Linux gateway machine such that our three internal networks 10.2.1.0/24, 192.168.20.0/24 & 192.168.2.0/24 use ISP1, ISP2 and ISP3 respectively in a split access manner. Outlined below is the layout/settings, Interfaces of the Linux Gateway connected to Routers: eth0: 10.1.1.2<---------->10.1.1.1(Internal Interface of ADSL Router)[ISP1] eth1: 192.168.15.2<------>192.168.15.1(Internal Interface of 3G Router)[ISP2] eth3: 192.168.1.2<------->192.168.1.1(Internal Interface of ADSL Router)[ISP3] Kindly note that none of the interfaces in the Linux gateway has a public static IP address. Routers of ISP1 and ISP2 get assigned a dynamic public IP address when connected to the Internet, router of ISP3 has been assigned a public static IP address. Interface of Linux gateway connected to a switch, eth4: 10.2.1.1(LAN Interface for ISP1) eth4:0 192.168.20.1(LAN interface for ISP2) eth4:1 192.168.2.1(LAN Interface for ISP3) eth4:0 & eth4:1 are virtual interfaces with eth4 being the interface connected physically. Based on http://linux-ip.net/html/adv-multi-internet.html I've set the following routes, ip route flush table 4 ip route show table main | grep -Ev ^default | while read ROUTE ; do ip route add table 4 $ROUTE done ip route add table 4 default via 192.168.15.1 ip rule add fwmark 4 table 4 ip route flush cache Additionally, using the following iptables rules to mark & route packets as per the guide mentioned above : http://pastebin.com/KzWHFGJA At this point, computers from 192.168.2.0/24 network are successfully able to reach the Internet through ISP3. 192.168.20.0/24 and 10.2.1.0/24 are unable to access the Internet through ISP1 and ISP2 respectively. Any inputs will be much appreciated !

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• Should I upgrade to Symantec Endpoint Protection?

  - by Alex C.

  I'm the IT manager at an animal shelter in Upstate New York. We have a Windows network with about 50 desktops running Windows XP Pro. We used to use CA eTrust Antivirus, but that product didn't work too well (too many infections got through). About six months ago, we switched to using Symantec Antivirus Corporate Edition ver. 10.1.8.8000. If anything, the Symantec product is even worse. The last six weeks in particular have been very bad -- we've had about seven or eight PCs get hit with those malware infections that masquerade as antivirus software. In most of those cases, Symantec didn't even flag the malware at all. So... what gives with the Symantec Antivirus? As far as I can tell, it's installed correctly and downloading updated definitions nightly. I can upgrade to Symantec Endpoint Protection for $220 (we get non-profit pricing), but I don't want to do it if it's not going to be significantly better. Any advice? Should I switch to something else entirely? Thanks!

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• How can Standard User change file associations in Windows 2000?

  - by Gary M. Mugford

  One of my clients is still running Win2K server with a host of Win2K workstations. And no net admin, due to the downturn of the economy over the years. I'm sort of helping out. Out of my depth, but I am a loyal foot soldier. A problem I encounter rather too often is a user double-clicks on a file in Explorer and then either gets no action, or the wrong program to run. It's a case of a missing or out-of-date file association. The current cure is to temporarily upgrade the user from Standard to Power, do the FA switch and then change back. As Winnie would whine, 'Oh, bother!' At any rate, I thought I'd ask here. Is there a method/program to run without the rigamarole FROM the Standard Users account on the workstation to edit/add a file association? I assume the program route would involve RunAs. I 'believe' most of the workstations run the RunAs service, but I could be wrong. I understand that's required, if there is to be a solution. Any help accepted with thanks. GM NOTE: Seems wassociate from http://www.xs4all.nl/~wstudios/Associate/index.html can resolve the issue.

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• How can Standard User change file associations in Windows 2000?

  - by Gary M. Mugford

  One of my clients is still running Win2K server with a host of Win2K workstations. And no net admin, due to the downturn of the economy over the years. I'm sort of helping out. Out of my depth, but I am a loyal foot soldier. A problem I encounter rather too often is a user double-clicks on a file in Explorer and then either gets no action, or the wrong program to run. It's a case of a missing or out-of-date file association. The current cure is to temporarily upgrade the user from Standard to Power, do the FA switch and then change back. As Winnie would whine, 'Oh, bother!' At any rate, I thought I'd ask here. Is there a method/program to run without the rigamarole FROM the Standard Users account on the workstation to edit/add a file association? I assume the program route would involve RunAs. I 'believe' most of the workstations run the RunAs service, but I could be wrong. I understand that's required, if there is to be a solution. Any help accepted with thanks. GM NOTE: Seems wassociate from http://www.xs4all.nl/~wstudios/Associate/index.html can resolve the issue.

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