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• Windows server 2008R2 routing with single NIC

  - by Fabian

  I'm trying to duplicate a Linux server configuration to a windows server 2008R2 box. Basicaly this linux server acts as a router, but it is doing its job with only 1 interface (1 NIC). Here is the network configuration in place (I cannot change it) : INTERNET <== Router (local ip = 194.168.0.3) <== linux Server (ip : 194.168.0.2). The router is configured with a DMZ to 194.168.0.2, and only allow this IP to connect to internet (Cannot change this router configuration). The linux server is configured with a default gateway to 194.168.0.3, with the option : "Act as router". All other computer on the lan have this configuration (given by DHCP) : IP range : 194.168.0.X MASK : 255.255.255.0 Default gateway : 194.168.0.2 And everything is working perfectly. I'm trying to reproduce this way of routing with only one NIC from a windows server 2008R2, but it seems that you cannnot do it with only one NIC (all exemples I see are refering to 2 NIC with 2 different network). Does someone have an idea how to achieved this in Windows server 2008R2 ? Tx you for your help ! Fabian.

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• DNS stops working occasionally

  - by Andrey

  I have tried using Google DNS and the one provided with DHCP. At some point my PC (Windows 7) stops resolving domain names, but DNS server is perfectly pingable. What can be the reason? Thanks! Edit: It is really weird. It can stop and start working in few seconds. The problem is that DNA requests are timing out, and the problem is that the DNS server is pingable at the same time. I can't understand how this could be possible and what might be an issue. C:\Windows\System32\drivers\etc>nslookup google.com DNS request timed out. timeout was 2 seconds. Server: UnKnown Address: 8.8.8.8 Non-authoritative answer: Name: google.com Addresses: 173.194.78.102 173.194.78.101 173.194.78.139 173.194.78.113 173.194.78.100 173.194.78.138 C:\Windows\System32\drivers\etc>nslookup google.com DNS request timed out. timeout was 2 seconds. Server: UnKnown Address: 8.8.8.8 DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. *** Request to UnKnown timed-out

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• Ubuntu Laptop as a wireless hotspot on bridge mode

  - by nixnotwin

  I have a wired router to which my ubuntu laptop connects via ethernet. The wierless NIC of the laptop acts as a wireless hotspot on master mode. I use hostapd fo this. I have bridged eth0 and wlan0, so my wireless clients that connect to my laptop over wifi get ip from the wired router via dhcp, so the devices get registered at the wired router ( and the laptop is just an access point). I use the following commands to get my laptop+accesspoint working: sudo brctl addbr br0 sudo brctl addif br0 eth0 sudo hostapd /etc/hostapd/hostapd.conf & sudo dhclient -d br0 & sudo ifconfig wlan0 192.168.1.15 netmask 255.255.255.0 up sudo brctl addif br0 wlan0 These commands enable me to access internet on my wireless clients and also on the laptop which is acting as wireless accesspoint. But if I reboot the wired router (without rebooting the laptop that is acting as accesspoint), Internet access on the laptop+accesspoint gets lost, but on wireless clients it works fine. Even I have not been able to figure out a command which will reset the laptop interfaces to default settings, so everytime the router reboots, I have to reboot the laptop too to get into default settings so that I can re-enter the above mentioned commands. My first question is How can I have my bridge+accesspoint up and running even-though the router reboots? And is there a command to set the interfaces to a default state? (ifdown -a doesn't work, after issuing the command the bridge still remained).

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• Getting SMB file shares working over a PPTP VPN

  - by Ben Scott

  I'm having issues getting SMB file shares working over a PPTP VPN. The server setup consists of a security device (DrayTek V3300) which passes the PPTP authentication to a SBS2003 server running RRAS. The server is the DC and provides DNS and WINS, the single NIC's name server is set to 127.0.0.1, and DHCP on the DrayTek sets the server IP as the DNS. If I create a new VPN connection in Win7, leaving everything as default apart from the server, username, password and domain, I can: ping everything by IP address resolve IPs with nslookup using their fully-qualified name, as in nslookup fileserver.mydomain.local ping machines by fully-qualified name, as in ping fileserver.mydomain.local However if I try to access a file share: within Explorer, I get "Windows cannot access ..." with "Error code: 0x80004005 Unspecified Error", using net use z: \\fileserver.mydomain.local\share, I get "System error 53 has occurred. The network path was not found." If I add the machine name to my HOSTS file I can use the file share, which is my last-ditch workaround, but I have a number of VPN users and would rather a solution that doesn't involve me trying to hand-edit system files on computers half a country away. If I set the WINS server explicitly in the connection's IPv4 settings I don't have to use the FQN to ping the machine, but that doesn't change anything else.

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• Ubuntu Laptop as a wireless hotspot on bridge mode

  - by nixnotwin

  I have a wired router to which my ubuntu laptop connects via ethernet. The wierless NIC of the laptop acts as a wireless hotspot on master mode. I use hostapd fo this. I have bridged eth0 and wlan0, so my wireless clients that connect to my laptop over wifi get ip from the wired router via dhcp, so the devices get registered at the wired router ( and the laptop is just an access point). I use the following commands to get my laptop+accesspoint working: sudo brctl addbr br0 sudo brctl addif br0 eth0 sudo hostapd /etc/hostapd/hostapd.conf & sudo dhclient -d br0 & sudo ifconfig wlan0 192.168.1.15 netmask 255.255.255.0 up sudo brctl addif br0 wlan0 These commands enable me to access internet on my wireless clients and also on the laptop which is acting as wireless accesspoint. But if I reboot the wired router (without rebooting the laptop that is acting as accesspoint), Internet access on the laptop+accesspoint gets lost, but on wireless clients it works fine. Even I have not been able to figure out a command which will reset the laptop interfaces to default settings, so everytime the router reboots, I have to reboot the laptop too to get into default settings so that I can re-enter the above mentioned commands. My first question is How can I have my bridge+accesspoint up and running even-though the router reboots? And is there a command to set the interfaces to a default state? (ifdown -a doesn't work, after issuing the command the bridge still remained).

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• OpenVPN Server - CPU is pegged out

  - by ericl42

  Hello, I am configuring OpenVPN to act as a SSL tunnel for a remote location. I have OpenVPN1 at our current location acting as a server then OpenVPN2 at the other location that is acting as a client but is also acting as a DHCP server to machines behind it so they are basically connected to the local LAN. Everything is set up fine and I can talk from location A to location B with no problems like everyone is local. I am however having some performance issues. OpenVPN1 CPU is pegged to 100% the entire time I am copying or doing any type of activity through the tunnel. I expect some CPU usage going up but nothing like this. It's really killing my performance. OpenVPN1 is running in ESX right now with 2 gig RAM and 4 procs with unlimited bursting capacity. I am using AES-192 encryption with a 1024 key. Any idea how I can get my CPU down on OpenVPN1 and my download/upload speeds higher between the tunnel? Thanks. edit: Turning down the logging helped boost the throughput a little bit, but I am still fairly shy of where I believe I should be. Also I am still maxed out on the CPU. Does anyone have any ideas? I am really stuck on this. Thanks.

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• How do I setup routing for 2 companies with different Internet connections on the same LAN?

  - by Clint Miller

  Here's the setup: 2 companies (A & B) share office space and a LAN. A 2nd ISP is brought in and company A wants it's own Internet connection (ISP A) and company B wants it's own Internet connection (ISP B). VLANs are deployed internally to separate the 2 company's networks (company A: VLAN 1, company B: VLAN 2, shared VOIP: VLAN 3). With separate VLANs it's simple enough to use separate DHCP servers (or separate scopes on the same server) to assign the default gateway to each company's gateway for their Internet connection. Static routes can be created on each gateway to point traffic destined for the other company's VLAN or the voice VLAN so that all nodes are reachable as expected. However, I think this is a form of asymmetrical routing, right? (The path from node A1 to node B1 is not the same as the path back from node B1 to node A1). Can I setup policy-based routing to correct this? In that case, can I assign the same default gateway to every device on all VLANs and create a routing policy on a L3 switch to look at the source address and forward traffic to the appropriate next hop? In that case, I want the routing logic to go like this: If the destination address is known, forward the traffic (traffic destined for a different VLAN). If the destination address is unknown, forward the traffic to ISP A's gateway if the source address is on VLAN A; or forward the traffic to ISP B's gateway if the source address is VLAN B. Am I thinking about this problem in the correct way? Is there another way to solve this problem that I am overlooking?

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• How to set up port forwarding on a dedicated server running CentOS 5.4 to use Ubuntu 9.0.4

  - by mairtinh

  The basic situation that I have is a dedicated server running CentOS 5.4 At the moment I have one VM running Ubuntu 9.0.4. Later on, I will want to add another VM running Windows Server 2003 but at the moment I am focusing on getting Ubuntu up and running. The Ubuntu installation is working fine but I'm seriously struggling to get port forwarding working so that I can access websites to be hosted on the Ubuntu VM. As a newbie to Linux, I am confused about the relationship between IPTables and VMWare's own port forwarding. Here's what I've tried so far. The IP of my server is xxx.xxx.xxx.xxx and the provider support have told me that the subnet mask is 255.255.255.0, the gateway address is xxx.xxx.xxx.1 and the network address is xxx.xxx.xxx.0. (Those latter two surprise me a bit, I expected private gateway/network address rather than public ones.) First of all I tried Bridged Networking but had no success at all in communicating with the machine other than through the VMware console. I tried pinging it from the host (using ssh into the host) but no joy; also no Inernet access from the VM. I changed the interfaces configuration from DHCP to Static, using a static address of 192.168.1.100 and setting the gateway to xxx.xxx.xxx.1 as advised by the provider. No real difference, still cannot ping the guest from the host or vice versa and no Internet access from the guest. Then I tried NAT. The host automatically set the IP address to 192.168.132.128 with a gateway of 192.168.132.2 Now the guest has Internet access out and when I do a VNC to the host and open Firefox with 192.168.132.128 I can see the hosted website okay but I still cannot get into it from outside. I mentioned that I'm a bit confused about IPtables and VMware port forwarding, what I meant is that I'm not sure whether IPtable forwarding should be set to the IP address of the guest interface (192.168.132.128 in this case) or the gateway address 192.168.132.2 . I have a feeling that I'm missing something very simple here, can anybody tell me what it is?

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• Need help using a super scope

  - by Vdub

  I have a windows server 2008 r2 standard running our DCHP, DNS, and AD. also I have (3) HP Pro Curve 2510-G switches (J9280A). Right now our LAN is set up 192.168.50.2-192.168.50.254 on our sub-net (A) and another scope with 192.168.51.2-192.168.51.254 sub-net (B) both have sub-net mask of 255.255.255.0. The same server is our DNS which is 192.168.50.242 and our firewall (watchguard) is the gateway at 192.168.50.1. Right now the sub-net (B) does not have DHCP active so only sub-net (A) is giving a pool. My problem is that we are trying to have open WiFi on our network and i am assuming that i can use the sub-net (B) for that if i activate it and use sub-net (A) for our staff only. I have noticed that when i set up a static on a client pc and set it to 192.168.51.x i cannot use the DNS of 192.168.50.242 however i can use 8.8.8.8 and it works fine, i am guessing that because it is on a different sub-net? Forgive me as i am very new at this and dont know a lot. Is there easy way with the equipment i have to a accommodate wifi for hundreds of people without causing problems for our staff? (multiple same IP address assigns) I appreciate any and all info!

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• TFTP Timing Out on Ubuntu VM

  - by valsidalv

  I'm running a Windows 7 PC with VMware installed which has my Ubuntu (10.04 Lucid Lynx). I recently installed a DHCP server and TFTP (Xinet tftpd) using these instructions. I've mapped a network drive so that my Windows has access to all the files in my VM through a 192.x.x.x IP address. I'm trying to throw some custom firmware onto a router. The router has its own built-in TFTP utility that will download the image. It successfully manages to do everything but it is slow because it writes it to flash memory. There is another method that is much quicker because it writes to RAM directly but it must use the TFTP server in Ubuntu. The issue I'm facing is that the Ubuntu TFTP transfer seems to be timing out. The transfer starts but never goes past ~60%. Here's my /etc/xinetd.d/tftp file (similar to a known working config): service tftp { protocol = udp port = 69 socket_type = dgram wait = yes user = nobody server = /usr/sbin/in.tftpd server_args = -s /home/user/tftp/ disable = no cps = 300 2 per_source = 60 } I've done some searching but can't find any parameters for this file to control timeout time or number of retries. The last two arguments (cps, per_source) and completely alien to me (can anyone explain). I have a few possible solutions but the easiest would be to get this TFTP server working. Can anyone help? Either with a timeout configuration or maybe even recommend a different TFTP server? Thanks!

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• How can I connect my Xbox to my Mac on my network

  - by codecowboy

  I have a wireless router/modem (Router 1) in my living room. This is connected to the internet (cable). Wireless is disabled as the router has a terrible wireless range. My Xbox is connected via ethernet to Router 1. Another LAN output from Router 1 connects to a powerline adapter. Router 1 acts as a DHCP server on 192.168.0.x and has the IP 192.168.0.1 In a second room I have Router 2. This has the powerline feed from Router 1 going into the WAN socket. This router runs the Tomato Firmware and acts as a wireless router for the rest of the house using the IP range 192.168.1.x. Router 2 IP is 192.168.1.1. My Mac is connected to Router 2 using a LAN cable and has the IP 192.168.0.133. Several mobile devices need wireless access. I want an ethernet connection to my Mac, not wireless. I should be able to use software like Connect360 to share media from my Mac to the XBox but the XBox does not see my Mac. I can ping 192.168.0.1 from the Mac. Is this possible using my current setup? If so, how?

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• Windows 7 - system error 5 problem

  - by ianhobson

  My wife has just had a new computer for Christmas (with an upgrade from VISTA to Windows 7), and has joined the home network. We are using a mix of WindowsXP and Ubuntu boxes linked via a switch. We are all in the same workgroup. (No domain). Internet access, DHCP, and DNS server is an SME server that thinks it is domain controller (although we are not using a domain). I need to run a script to back up my wife's machine (venus). In the past the script creates a share on a machine with lots of space (leda), and then executes the line. PSEXEC \\venus -u admin -p adminpassword -c -f d:\Progs\snapshot.exe C: \\leda\Venus\C-drive.SNA With the wife's old XP machine, this would run the sysinternals utility, copy shapshot,exe to her machine and run it, which would then back up her C: drive to the share on leda. I cannot get this to work with Windows 7, nor can I link through to the C$ share on her machine. This gives me a permissions error (system error 5). The admin account is a full admin account. And yes - I do know the password. The ordinary shares on her machine work fine! I guess I'm missing something that Microsoft have built into Windows 7 - but what? The machine is running Windows 7 business, with windows firewall, AVG anti virus, and all the crap-ware you get with a new PC removed. Thanks

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• filter / directing URLs coming onto a network

  - by Jon

  Hi all, I an not sure if this is possible or not but what i would like to do is as follows: I have one IP address (dynamic using zoneedit.com to keep it upto date). I have one webserver running my main site which is an Ubuntu machine running Apache. I also have a windows 2008 server running another site. Just to confuse things I also run part of my Apache site on the windows server, currently using proxypassreverse to get the information from it. So it looks something like this: IP 1.2.3.4 maps to mydomain.com as well as myotherdomain.com All requests that come into port 80 are forwarded to the Apache box and I use Virtualhost settings to proxy the windows sites where needed. so mydomain.com is an Apache site mydomain.com/mywindowssection is the Apache server using proxypassreverse to get part of the site from the Windows server myotherdomain.com uses Apache and proxypassreverse to get the whole site. What I would like to be able to do is forward all http requests that come into my network to one machine that figures out who should be serving that content. so: mydomain.com would go to the Apache machine myotherdomain.com would go the windows machine. I am just in the process of setting up an Astaro gateway (never done this before so taking a while to configure) as my firewall, dns, dhcp etc, don't know if this can handle it. I have the capacity to run a VM on the network if a seperate box would be needed for this process as well. Thanks for any and all feedback. Jon

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• Guest can't access host windows network share

  - by Asteroza

  HI folks, I've recently run into a strange problem after upgrading to VMware player 3. Certain virtual machines (currently an XP and a VIsta VM) seem to have lost the ability to access the host (XP) network shared folders (SMB). Both VM machines are bridged networking, firewall is up. Host firewall is up. Host and guests use DHCP. All OS are workgroup connected. The Vista VM I am not completely sure, but the XP VM did have access to the host's network shared folders after the player upgrade. Then today it wouldn't work, network path can't be found. Now here's the wierd part. The host's network shared folders can be accessed properly by other PC's on the network (and as far as I know, no settings have been changed). The host is pingable from the guests, and name resolution works. The guests can access network shares on other PC's in the network, and access the internet. My Network Places shows the host PC, but double clicking on it takes a long time before it finally times out with an error. Doing a wireshark packet capture, the guest is sending out the protocol negotiation, and the host is sending a response, but after that the guest behaves like it didn't receive anything and is doing TCP retransmissions. Anybody have any idea what could be wrong? Yes I know I can drag and drop files or setup the special VMware shared folders, but I want to access the host just like any other network accessible shared folder. It just seems really odd when any other computer works, just not between the guest and host.

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• UDP blocked by Windows XP Firewall when sending to local machine

  - by user36367

  I work for a software development company but the issue doesn't seem to be programming-related. Here is my setup: Windows XP Professional with Service Pack 3, all updated Program that sends UDP datagrams Program that receives UDP datagrams Windows Firewall set to allow inbound UDP datagrams on a specific port (Scope: Subnet) If I send a UDP datagram on any port to other, similar machines, it goes through. If I send the UDP datagram to the same computer running the program that sends (whether using broadcast, localhost IP or the specific IP of the machine), the receiver program gets nothing. I've traced the problem down to the Windows XP Firewall, as Windows 7 does not have this problem (and I do not wish to sully my hands with Vista). If the exception I create for that UDP port in the WinXP firewall is set for a Scope of Subnet the datagram is blocked, but if I set it to All Computers or specifically enter my network settings (192.168.2.161 or 192.168.2.0/255.255.255.0) it works fine. Using different UDP ports makes no difference. I've tried different programs to reproduce this problem (ServerTalk to send and either IP Port Spy or PortPeeker to receive) to make sure it's not our code that's the issue, and those programs' datagrams were blocked as well. Also, that computer only has one network interface, so there are no additional network weirdness. I receive my IP from a DHCP server, so this is a straightforward setup. Given that it doesn't happen in Windows 7 I must assume it's a defect in the Windows XP Firewall, but I'd think someone else would have encountered this problem before. Has anyone encountered anything like this? Any ideas?

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• How to Load Balance 2 Internet Connections on a Windows 7 machine?

  - by Jimmy Chandra

  It's sort of related to this particular question, but that one is on Mac. I am looking for similar solution on Windows 7. I have 2 network connections: (Connection A) Wireless terminal connecting to ISP A (3G / EVDO internet provider) (Connection B) Broadband wired connection connecting to ISP B (Cable internet provider) Both has access to the internet. When I try connecting to a website and checking the networking tab on my Task Manager, I only see the network traffic being routed to only Connection A. Is there a way to make the computer to utilize both network (in a sense using all the bandwidth available from both the Cable ISP and the 3G / EVDO ISP) at the same time? If so, what do I need to do to set this up ... on Windows 7? Here is a bit more info on my network connections (ipconfig /all): PPP adapter Wireless Terminal: IPv4: aa.bb.ccc.ddd(preferred) Subnet mask: 255.255.255.255 Default Gateway: 0.0.0.0 DNS: aa.ee.f.ggg aa.ee.f.hhh Primary Wins: jjj.ii.k.l Secondary Wins: jjj.ii.k.m Ethernet adapter LAN: IPv4: 192.168.1.100 (connected to a router by wired that itself connect to a cable modem) subnet mask: 255.255.255.0 Default gateway: 192.168.1.1 (the wireless router) DHCP: 192.168.1.1 (the wireless router) DNS: xxx.yy.zz.ww rr.sss.t.uuu For my own privacy, I don't believe the actual number matters, the patterns are representative of the ip numbering scheme...

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• Is UPS worthwhile for home equipment?

  - by Jon Skeet

  Over the years, I've had to throw away a quite a few bits of computing equipment (and the like): Several ADSL routers with odd symptoms (losing wireless connections, losing wired connections, DHCP failures, DNS symptoms etc) Two PVRs spontaneously rebooting and corrupting themselves (despite the best efforts of the community to diagnose and help) One external hard disk still claiming to function, but corrupting data One hard disk as part of a NAS raid array "going bad" (as far as the NAS was concerned) (This is in addition to various laptops and printers dying in ways unrelated to this question.) Obviously it'll be impossible to tell for sure from such a small amount of information, but might these be related to power issues? I don't currently have a UPS for any of this equipment. Everything on surge-protected gang sockets, but there's nothing to smooth a power cut. Is home UPS really viable and useful? I know there are some reasonably cheap UPSes on the market, but I don't know how useful they really are. I'm not interested in keeping my home network actually running during a power cut, but I'd like it to power down a bit more gracefully if the current situation is putting my hardware in jeopardy.

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• How to create a static IP on Windows Server 2008 R2 so I can access the server remotely

  - by Aesir

  I have just purchased a HP Proliant N40L which I am intending to use as a NAS, learning tool and just in general something to mess around with. As a student via the Microsoft dreamspark program I can get a free copy of Windows Server 2008 R2 which I am using as the OS. So that I can remote to the box from outside of my local network and so that I can stream media from it to my PS3, I have read that I need to create a static IP for the server and use port forwarding to forward to this IP so I can remote in. Is this correct? I am not really sure how to do this and if I need to make these changes on my router configuration, on the OS or both. I am a novice when it comes to networking however most resources for Windows server 2008 R2 seem to assume a fair amount of experience already. I realise that using this particular OS may seem like overkill for what I currently wish to do with it (stream content to other devices and backup) but as I can get a copy for free it seems sensible. Edit: From reading answers posted I feel I should give more information. I have now tried to add a static IP address using my router configuration settings. I have used the getmac command to get the mac address of the server. My ISP is Virgin Media and I have gone to the LAN IP section and I have added an IP address to the DHCP Reservation Lease Info. I can now use remote desktop connection internally to remote to the server (so I am assuming assigning this IP has worked). How do I configure this on the OS as well? I am also unsure on how I would remote to this machine outside of my local network?

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• Can't find PC on network

  - by Simon Verbeke

  I just got myself a new laptop, and set it up. It is connected to the wireless internet in my home. I then wanted to create a homegroup between the laptop and my desktop, but they can't find each other. Probably because the desktop has a wired connection to the router and the laptop is connected to a wireless access point. The router and the AP are connected to a switch in the middle by cable. A sketch of the network: Laptop - - - Wireless Access Point ----- Switch ----- Router ----- Desktop ^ ^ ^ ^ Wireless Wired Wired Wired They both point to the same gateway and DHCP-server (on 192.168.0.1). And I can ping to that address from both PCs. When I try to ping either of the PCs the pings time out. The subnets are also the same (255.255.255.0) and the IPs are in the same range (192.168.0.114 laptop, 192.168.0.205 desktop). So I don't really understand what I need to do to be able to access either computer from the other. The weird thing is that Synergy (to use mouse and keyboard over the network) works, just by using the IPs assigned to both PCs. The acces point is a linksys WAP54g, but I'm unsure of the Router, it has a custom casing from our ISP and hides any clues for identifying the product. I'm going to google a bit so I can add that info later. Both PC's are Windows 7 64 bit. The desktop is Ultimate, the laptop Professional.

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• Rename Active Directory domain following Windows 2000 -> 2008 migration.

  - by ewwhite

  I'm working with a site that needs an internal DNS domain rename. It currently has a DNS name of domain.abc.com and NT name of ABC. I'm trying to get to a DNS name of abctrading.com and NT name of ABCTRADING. Split DNS would be used. The site originally ran from a single Windows 2000 domain controller hosting AD, file, print, DHCP and DNS services. There was no Exchange system in the environment. The 50 client PCs are all Windows XP with a handful of users using roaming profiles. All users are in a single OU and there are no group policy/GPOs. I'm a Linux engineer, but have been trying to guide another group of consultants to reach a more suitable setup. With the help of this group, we were able to move the single Windows 2000 system to a set of Windows 2008 R2 servers separated into domain controller and file/print systems (virtualized). We are also trying to add an Exchange 2010 system to this mix. The Windows 2000 server was demoted and is no longer in the picture. This is the tricky part, as client wants the domain renamed and the consultants aren't quite sure how to get through it without another 32-40 hours of testing/implementation. THey say that there's considerable risk to do the rename without a completely isolated test environment. However, this rename has to be done before installing Exchange. So we're stuck at this point. I'd like to know what's involved in renaming the domain at this point. We're on Windows Server 2008. The AD is healthy now. Coming from a Linux background, it seems as though there should be a reasonable path to this. Also, since the original domain appears to be a child/subdomain, would that be a problem here. I'd appreciate any guidance.

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• Troubleshooting wireless client-bridged networks between two DD-WRT routers?

  - by KronoS

  I recently purchased a Buffalo N600 wireless router which came with DD-WRT pre-installed. I want to take my old wireless router a Linksys WRT54GL, also with DD-WRT pre-installed, and use it as a wireless bridge for my HTPC and Blu-Ray Player in the other room. I other words, I'm trying to connect to WIRED networks via the wireless on the routers. I followed eactly the instruction from DD-WRT's manual for 'Client Bridged' however I'm still not able to connect to two routers correctly, when the encryption is enabled (WPA2-Personal Mixed) however I am able to connect the two routers when there is NO encryption. I've checked, double checked, and triple checked that EVERYTHING is the same on BOTH routers: Routers 1 & 2 Encryption: WPA2-Personal Mixed Wireless Mode: G-Only Wireless Channel: 6 Subnet Mask: 255.255.255.0 Subnet: 192.168.1.0/254 SSID: Krono$ Primary Router #1 (Buffalo N600) IP Address: 192.168.1.1 Firewall: Enables w/ defaults DCHP: Enabled as DHCP Server Secondary Router #2 (Linksys WRT54GL) IP Address: 192.168.1.2 Firewall: Disabled as per DD-WRT instructions I'm looking for any configurations that I may have missed, or settings that may need to happen in order for this work.

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• PEAP validating a secondary domain suffix

  - by sam

  Probably the title is a little bit confusing, let me explain the situation. Our company wants to implement a corporate wireless lan with PEAP authentication. unfortunately someone made a big mistake in our AD design 10 years ago. The domain name we are using "company.ch" is not owned by company but by someone else. so it is not possible to issue a public SSL certificate for the RADIUS server. Our AD is to big to rename it. We already thought about using our private PKI and rollout the CA certificate via GPO but that would only cover our corporate managed clients but not the BYOD (Smartphones, Tablets, Laptops..) Is there a way to add a secondary domain name like “company2.ch” and issue a public certificate and join that radius to that secondary domain aslwell, and configure that secondary dns suffix via DHCP for all the client pools... or is there another way with for example a new radius server which has his own domain company2.ch which is connected with some kind of trust between the company.ch doamin? sorry i'am not a client server guy.. hopefully you get my drift.!?

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• How to connect a Win XP PC and Win 7 PC with a Linksys WRT54G Router to a PPPOE connection ?

  - by ChristianM

  I have two PCs and a WRT56G Router. My provider is a PPPOE connection (username and password). I can connect my Windows 7 easily. Even if I choose Auto or PPPOE on the router's configuration. Maybe because this one had the connection in the first place with the username and password set up. But I can't connect the Windows XP PC. Actually it does connect in a way, but it receives and sents just a few packages. I can actually see in My Network Places how many packages does the Gateway make and it's a big difference. And it won't open any page. How should I set up the router so I can give enough bandwith to the Windows XP PC ? I've seen another problem that I forgot to mention. The router can't connect with the pppoe settings. I don't know why, but with Auto DHCP setting and my Windows 7 connected with pppoe settings works. EDIT2: I've installed Win 7 on the other PC so I won't have any problem of compatibility betwen them. But I still can't connect the router with PPPOE settings to the internet. It looks like this: http://img641.imageshack.us/img641/9780/capturefba.png If you need any other screens or info, please tell me.

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• XenServer VMs can't reach network

  - by toto

  I'm currently trying to setup a small cloud architecture , I'm using in the installation CloudStack 2.2.14 which need two node : a management server (as node1) to provision the cloud and a hyperviser XenServer 5.6 SP2 to host the VMs (as node2). I succeded to create both node1 and node2 into an ESXi 5 VMWare as VMs. So The ESXi 5 is hosting two VMs node1 + node2 , and node2 which is the XenServer will host also VMs (such as ubuntu or Centos). Both node1 and node2 can ping each other and can get the internet connection from Esxi5 ,but My problem is : that VMs into the node2(XenServer) can't reach the network (can't ping node1 or Esxi or get an internet connection but they can ping VMs IN the node2(XenServer). So I tried to: 1-Setup a DHCP server as node3 in ESXi5 and connect node2(Xenserver) to him , but always the VMs into to node2 can't reach the outer network. 2-Setup a DCHP server into node2 , but always the same problem. So , 1-is there any other configuration i'm missing in node2 (considering that I'm sure about DNS , GW , NETMASK configuration)?. 2-Is it the problem because i'm Creating VMs into node2(XenSever) which is a VM into ESXi 5 ?

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• Netbook (Samsung N220) on Ubuntu 10.04 slows down WiFi for other computers

  - by Joachim

  I encountered a really odd problem with my new netbook. I am running Ubuntu 10.04 on a Samsung N220 Mito. So far everything worked fine. Now I tried the machine for the first time in our work group where we have a wifi (with internet access) for all laptops. The wifi is controlled by a computer running Suse 9.3 which provides a DHCP server and imposes a firewall. At the moment there is only a macbook in the wifi, where no problems with the internet or wifi connection are encountered. Now coming to my actual problem: In addition to the macbook i connect the Samsung N220 to the Wifi. Problem: My download speed is for some reason limited to 70KB/s max. This is neither a limitation of the server/website i browse on, nor a configuration of the netbook: at home i have 500KB/s download speeds. Furthermore, it is not a default limitation for "untrusted" or "new machines" in the wifi, as for instance other new laptops get full speed internet with our wifi. Problem: Once the Samsung N220 is generating traffic in the wifi, the wifi is slowed down dramatically for all other machines: I run a ping to the router from the macbook. The ping times with the N220 ideling are 2-6ms. When I start downloading or browsing in the web with the N220 the ping speed drops to 800ms. Vice versa, when the macbook is generating the traffic the ping of the N220 to the rooter stays constant at around 2-6ms. So clearly, it is some problem originating from my netbook or maybe its treatment in the wifi. Thanks for any help

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