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• How to install (old) packages for Ubuntu 9.04?

  - by wchrisjohnson

  Based on some excellent feedback by Mark here (http://serverfault.com/questions/285598/should-i-clone-a-physical-server-to-create-a-vm-for-a-staging-server), today I was able to use the vmware converter to clone my production server for a staging server. However the nic won't come up no matter what I do. I attempted to inistall vmware tools, as I suspect that the fact that it is not installed might prevent the nic from working. (I have the nic set as a vmxnet3 card in the vm settings). The install failed because there were several dependencies missing as well as the Linux headers. Given that Ubuntu 9.04 has been EOL'd, the packages I need to install to get the vmware tools to install are no longer available. I doubt the ubuntu 9.04 install CD has the packages on it. What are my options? I'd rather not upgrade the version of Ubuntu yet, as the point of the vm right now is to maintain parity with the production server. Might I have better luck resetting the driver to use vmxnet2 instead of the vmxnet3? Thanks in advance! Chris

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• Looking for a powershell script that can pull a file from a set of PC's and FTP

  - by DangeRuss

  I'm looking to write a script (preferably powershell) that will essentially copy a file from a bunch of PC's and FTP it to a server. So the structure of the environment is that we have a file on multiple PC's (around 50 or so) that need to placed on a server. Sometimes one of the PC's may be turned off so the script would first need to ensure the PC is up and running (maybe a ping result), then it would need to go into a directory on that PC, pull a file off of it, rename the file, place into a source directory, then remove the file. Naming convention doesn't matter, but date/time stamp would be easiest. Ideally, it would be best to first move all the files to a source directory to save on FTP bandwidth, but since the files will be named the same, the files must be renamed during the move process. Move not copy because the directory needs to be empty so the file can be re-created the next day. So once moved to the source directory, now all the files need to be FTP'd to a server for processing. After all of this, we need to know which PC's on the list did not respond so we can manually retrieve the file so the script should output a file (txt is fine) that will show which PC's were offline. Everything is one domain and script will be run from an server with admin creds. Thank you!

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• I have a wireless Canon P560 and my computer can't find it

  - by ed

  The printer is wireless and I haven't connected it via USB. I set the configurations for the Wi-Fi access point in the printer and it connected to my Wi-Fi. I have AT&T as the service provider and the 2Wire router. When I access the router in the browser I see that the printer is connected but when I run the software to detect the printer the computer can't find it. I have a Mac with Snow Leopard. I tried to detect the printer with another device and it can't find it. Is there a port that needs to be open for wireless printers? Because I tried putting the routers firewall settings for the device to its lowest and the computer still can't find it. Let me know. Thnx.

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• Wireless N extend G range?

  - by Sam

  I've searched all over the internet for an answer to this and I can't find one. If I purchase a wireless N router, with greater range than my current G router will the range of the wireless G signal go as far as the wireless N signal? I say this because Wireless N routers are supposed to be compatible with wireless G devices. Is the wireless G a lesser signal coming out of the router? Sorry if I confused you, I am a little confused myself.

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• Iptables port mapping from two PCs to one

  - by Anton

  We have 3 PCs, two of it are connected to internet (both of it have 2 NIC) PC1: eth0 - 1.0.0.1 (external IP) eth1 - 172.16.0.1 (internal IP) PC2: eth0 - 1.0.0.2 (external IP) eth1 - 172.16.0.2 (internal IP) PC3: eth0 - 172.16.0.3 (internal IP) Now we want to map port 80 from PC1 and PC2 to PC3. But there is the problem: iptables port forwarding works well from PC1 or PC2, but only in case if PC3 have PC1 or PC2 as gateway. So, question is: can we have port mapping from both PC1 and PC2 regardless of gateway settings on PC3? Thank you in advance.

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• Windows XP SP3 dissapearing mapped drives

  - by Alan Spark

  I am running Windows XP Pro SP3 and I've got a few shares on my NAS that are mapped to reconnect automatically. I can access the drives soon after starting windows but after a period of inactivity I get the error "The local device name is already in use". This cannot be remedied until I restart the computer - I've tried disconnecting and re-mapping without success. This was working fine until I recently reinstalled Windows and I'm not sure what is going on. Any help would be greatly appreciated. Thanks, Alan

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• Cisco ASA 5505 network route for static IP hosts

  - by TheCapn

  I've configured my internal VLAN using the most basic settings where ports 1-7 are assigned from a pool of addresses in the range 192.168.15.5 - 192.168.15.36. These hosts are given access to the internet and it works great. What I'm trying to set up now is allowing users who are connected to the device and specify their IP (say I connect and request 192.168.15.45) are given internet access and can still work alongside DHCP hosts. Those with a DHCP assigned address are blocked from the internet. Mostly the issue resides in that I am very new to working with the device. I feel that the solution is easy but I'm not looking in the right spots and don't have the correct terminology down to google it. Do I need to define access control lists? Group policies? a new VLAN? The rules that are set up seem to be specific to the entire /24 subnet but when I request a static IP outside of the DHCP range I get blocked from other hosts and the internet.

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• Network Table assistance

  - by mitchnufc

  I am designing a small network and have came up with the following table I am just wondering if this seems right, would appreciate some feedback, thanks. Network/Router First IP Last IP Subnet Host Broadcast Router 1 162.10.0.1 162.10.0.7 255.255.255.248 162.10.0.0 162.10.0.8 Network 1 162.10.1.1 162.10.2.253 255.255.254.0 162.10.1.0 162.10.2.254 Network 2 162.10.0.9 162.10.0.14 255.255.255.248 162.10.0.8 162.10.0.15 Router 2 162.10.0.17 162.10.0.18 255.255.255.252 162.10.0.16 162.10.0.19 Network 3 162.10.0.21 162.10.0.146 255.255.255.128 162.10.0.20 162.10.0.147 Router one is the IP assigned by the ISP

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• XP - ping changes routing table?

  - by Corelgott

  Hey Folks, I have got a real strange behaviour with one of my XP-Sp3 machines. Setup: A Server in the lan (192.168.5.0) proviedes access to all roadwarriors in 10.8.0.0 The DCHP has a static route for all clients pronouncing 192.168.5.235 as gateway for 10.8.0.0 All Clients can ping & access the vpn-machines; everything works like a charm But one Xp-Sp3 is not willing to connect to them. It gets all the same routes as any other sytem in the lan and I trippel-checked - there are no static routes on this machine When I ping any 10.8.0.0 device from this machine, the first two packaged work like a charm; but the next two (and any package after them) fail and get lost. When I look back into the routing table: There is a new route; a special one just for the device I pinged, which points to the right gateway - but which wasn't there earlier... As Long as this route exists the machine can't ping anything on 10.8.0.0. But if I remove the route by hand: The next to ping packages work fine... Has anybody got an idea about that? Anybody every seen such a behaviour? Any hint / help / tip is greatly appreachiated! thx in advance Corelgott Ps: I attach an image of the cmd to clarify things - its in german, but reading a routing table shouldn't be that hard...

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• Unable to ping between subnets and out to internet

  - by battlemidget

  My setup is Modem - Linksys router - Laptop with 2 devices (wlan0/eth0) - desktop machine Router is 192.168.1.1 gateway to the internet Laptop wlan0 is 192.168.1.4 with a gw of 192.168.1.1 Laptop eth0 is 192.168.2.254 which acts as a second gateway desktop is 192.168.2.100 On laptop i've setup ip_forward to 1, and have inserted 2 iptables rules -A FORWARD -i eth0 -o wlan0 -j ACCEPT -A FORWARD -i wlan0 -o eth0 -j ACCEPT The laptop can ping outside the network (i,e, yahoo.com) it can not ping 192.168.2.100. The desktop can ping 192.168.2.254 but nothing outside the network or 192.168.1.0 subnet. On laptop ip route show lists: 192.168.2.0/24 dev eth0 proto kernel scope link src 192.168.2.254 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.4 127.0.0.0/8 dev lo scope link default via 192.168.1.1 dev wlan0 What am I missing to make my desktop go through the laptop in order to access the router which provides access to the internet? Thanks

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• How to setup an Openvpn server with two gateways to internet

  - by fourat

  I have an openvpn server behind two wan interfaces: eth1 and eth2 where eth1 is the default gw and eth2 is where openvpn binds to. The problems my ovpn server is replying back to ovpn client via the default gw (through eth1) and the tcp negociation is lost before establishing any tunnel. Here's what's happening: wan client -----> eth2 ----> openvpn -----> eth1 ----> lost and not delivered back to client Is there a way to tell ovpn to stick on eth2 and consider it for all traffic ?

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• How to know that my IP is invalid

  - by PeterMmm

  I have a script running that will start up an interface with a new IP. If the script comes up with an IP that is already in use i am in trouble. Is it possible that the script set up the new Ip, detects that this IP is already in use and then check the next one, until it finds an ip that works ? B=192.168.1. I=1 while [ "$I" != "256" ] do ifconfig eth0:1 $B.$I # check here that IP is Ok ! let "I=I+1" done

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• What is your approach to draw a representation of your network ?

  - by Kartoch

  Hello, I'm looking to the community to see how people are drawing their networks, i.e. using symbols to represent complex topology. You can have hardware approach, where every hardware unit are represented. You can also have "entity" approach, where each "service" is shown. Both are interesting but it is difficult to have both on the same schema (but this is needed, especially using virtualization environment). Furthermore, it is difficult to have complex informations on such representation. For instance security parameters (encrypted link, need for authentication) or specific details (protocol type, ports, encapsulation). So my question is: where your are drawing a representation of your network, what is your approach ? Are you using methodology and/or specific softwares ? What is your recommendations for information to put (or not) ? How to deal with the complexity when the network becomes large and/or you want to put a lot of information on it ? Examples and links to good references will be appreciated.

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• I need to build a mini computer lab with 6 PCs

  - by chiurox

  Hello everyone, This weekend I need to build a mini computer lab with 5-6 PCs. The purpose is for a small computer class that will be taking place. They're mostly going to be doing office and daily kind of stuff, so nothing high performance. However, I hope it will last at least for 2 more years. I already have some parts for 2 PCs, one is a P4 3.0 and another is Celeron 2.4GHz, both socket 478. For the other 4 PCs, I'm wondering if I should buy individual parts and put it all together or get workstations like those Dell Optiplex with P4s. To put things into perspective, I am not currently in the US. I'm in South America and prices here are ridiculously. Another really important thing is that I need to share an internet connection between a total of 8 PCs at this place. Right now I only have a crappy wireless router, should I get another one? Or go with switch hub? I'm not experienced in this matter. Thanks guys!

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• Iptables - forward email ports?

  - by Emmet Brown

  im trying to open some local ports (LAN) and then re-direct them to another server (WAN) using iptables. Here is my config: #WAN allow-hotplug eth1 auto eth1 iface eth1 inet static #Tarjeta red WAN address 192.168.2.2 gateway 192.168.2.1 netmask 255.255.255.0 #LAN allow-hotplug eth0 auto eth0 iface eth0 inet static address 192.168.16.6 netmask 255.255.255.0 network 192.168.16.0 broadcast 192.168.16.255 I try this: iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 110 -j DNAT --to 200.40.30.218:110 iptables -A FORWARD -p tcp -i eth0 -o eth1 -d 200.40.30.218 --dport 110 -j ACCEPT iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 25 -j DNAT --to 200.40.30.218:25 iptables -A FORWARD -p tcp -i eth0 -o ethq -d 200.40.30.218 --dport 25 -j ACCEPT but, it did not work. i also try changeing eth0 to eth1 (and eth1 to eth0) but nothing happened. Starting Nmap 5.00 ( http://nmap.org ) at 2011-10-03 14:44 UYST Interesting ports on 192.168.16.6: Not shown: 997 closed ports PORT STATE SERVICE 22/tcp open ssh 111/tcp open rpcbind 8080/tcp open http-proxy Im running debian. Can u guys help me to check what is happening? edit: IPTABLES-SAVE # Generated by iptables-save v1.4.8 on Mon Oct 3 15:43:14 2011 *mangle :PREROUTING ACCEPT [139993:77867651] :INPUT ACCEPT [139385:77761761] :FORWARD ACCEPT [186:12071] :OUTPUT ACCEPT [173556:74341650] :POSTROUTING ACCEPT [173734:74352988] COMMIT # Completed on Mon Oct 3 15:43:14 2011 # Generated by iptables-save v1.4.8 on Mon Oct 3 15:43:14 2011 *nat :PREROUTING ACCEPT [1649:190626] :POSTROUTING ACCEPT [6729:339646] :OUTPUT ACCEPT [6697:337660] -A PREROUTING -i eth0 -p tcp -m tcp --dport 110 -j DNAT --to-destination 200.40.30.218:110 -A PREROUTING -i eth0 -p tcp -m tcp --dport 25 -j DNAT --to-destination 200.40.30.218:25 COMMIT # Completed on Mon Oct 3 15:43:14 2011 # Generated by iptables-save v1.4.8 on Mon Oct 3 15:43:14 2011 *filter :INPUT ACCEPT [138307:77066136] :FORWARD ACCEPT [168:11207] :OUTPUT ACCEPT [172288:73655708] -A FORWARD -d 200.40.30.218/32 -i eth0 -o eth1 -p tcp -m tcp --dport 110 -j ACCEPT -A FORWARD -d 200.40.30.218/32 -i eth0 -o ethq -p tcp -m tcp --dport 25 -j ACCEPT COMMIT # Completed on Mon Oct 3 15:43:14 2011 Regards

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• Parallels: How to see a Mac-hosted website from Windows?

  - by Jim Miller

  I'm traveling at the moment, and have moved one of the websites I'm working on to my MBP so I can work on it without a network connection. I've made an addition to the Mac's /etc/hosts file pointing the domain name to 127.0.0.1, and all's well. I now want to get into Parallels and check the site from Windows browsers. How do I get things so that the Windows browser will understand the domain name and access the site? The Windows image obviously doesn't recognize / can't find the Mac's /etc/hosts file, and references to 127.0.0.1 in the Windows hosts file just as obviously point to Windows, not the Mac. Any advice out there? Thanks!

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• Use LAN to interface Synergy while having WiFi connected to internet

  - by freonix

  Similar question and solution I have LAN and WiFi connection, with the WiFi connected to internet and the LAN is simply connected via an Ethernet cable between two computers. I need to get Synergy working without compromising the WiFi internet. I've tried the solution above but couldn't seem to work. Both of the computer are running Windows XP. Even setting the LAN IP to static and under the same subnet doesn't seem to work. Anyone with similar situation and got Synergy to work? edit : Refined the question for clarity. Also, the computer are able to ping each other. Remote desktop can be accessed as well. I suspect the problem lies in Synergy's configuration.

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• Configure server on network to analyze traffic

  - by Strajan Sebastian

  I have the following network: http://i.stack.imgur.com/rapkH.jpg I want to send all the traffic from the devices that connect to the 192.168.0.1 router to the 192.168.10.1 router(and eventually to the Internet), by passing through the server and an additional router. Almost 2 days have passed and I can't figure what is wrong. While searching on the Internet for some similar configuration I found some articles that are somehow related to my needs, but the proposed solutions don't seem to work for me. This is a similar article: iptables forwarding between two interface I done the following steps for the configuration process: Set static IP address 192.168.1.90 for the eth0 on the server from the 192.168.1.1 router Set static IP address 192.168.0.90 for the eth1 on the server from the 192.168.0.1 router Forwarded all the traffic from 192.168.0.1 router to the server on eth1 interface witch seems to be working. The router firmware has some option to redirect all the traffic from all the ports to a specified address. Added the following rules on the server(Only the following, there aren't any additional rules): iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE iptables -A FORWARD -i eth1 -o eth0 -m state -–state RELATED,ESTABLISHED -j ACCEPT iptables -A FORWARD -i eth0 -o eth1 -j ACCEPT I also tried changing iptables -A FORWARD -i eth1 -o eth0 -m state -–state RELATED,ESTABLISHED -j ACCEPT into iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT but still is not working. After adding the following to enable the packet forwarding for the server that is running CentOS: echo 1 /proc/sys/net/ipv4/ip_forward sysctl -w net.ipv4.ip_forward = 1 After a server restart and extra an extra check to see that all the configuration from above are still available I tried to see again if I can ping from a computer connected to 192.168.0.1/24 LAN the router from 192.168.1.1 but it didn't worked. The server has tshark(console wireshark) installed and I found that while sending a ping from a computer connected to 192.168.0.1 router to 192.168.1.1 the 192.168.0.90(eth1) receives the ping but it doesn't forward it to the eth0 interface as the rule tells: iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT and don't now why this is happening. Questions: The iptables seem that don't work as I am expecting. Is there a need to add in the NAT table from iptables rules to redirect the traffic to the proper location, or is something else wrong with what I've done? I want to use tshark to view the traffic on the server because I think that is the best at doing this. Do you know something better that tshark to capture the traffic and maybe analyze it?

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• DHCP server inside a virtual machine can't see other machines

  - by William

  Hi, I setup a private network from virtual machines and one of the machines is the DHCP server for the group. I want to specify a next-server for the DHCP server but I'm having trouble connecting to any of the machines that I lease IPs to. I'm just trying to do a simple ping/ssh to 10.0.0.252 (a machine with a lease) but it doesn't seem to respond. Any advice? I'm assuming I need to be able to connect to my next-server but maybe I'm wrong. Thanks.

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• How to configure multiple addresses on a single interface using Fedora 16

  - by cg.

  I upgraded from Fedora 14 to 16, recently. I had two static IP v4 addresses configured on my ethernet interface by creating two files in /etc/sysconfig/network-scripts: ifcfg-eth0 -> first address ifcfg-eth0:1 -> second address After the upgrade, this resulted in an error message during the boot process and in only the second address being successfully configured on the interface. So, what is the correct way to configure multiple addresses on a single interface on Fedora 16? I could not find anything on this subject in the documentation so far.

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• Would a switch be covered by a router's firewall

  - by Uh-yeah...

  So... Hopefully; this is the right place for this question. I need more Ethernet ports on my home network. Sadly, we already have an old router connected to the main router and we still need more ports. I feel dumb for asking; but, I just would like to double check. Would the devices connected to the switch be "protected" by the Main router's firewall? ? Up to this point I have assumed that was the case; but, a co-worker is convinced that is not the case [ I believe he is thinking of a situation in which the switch (un-managed) is before an access point]. [It would go modem to main router; main router then has the switch and old router connected to it.

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• Any consumer routers with Outgoing VPN support?

  - by Brian Lacy

  When I'm working at home, I need to be able to connect to three different outgoing VPNs, two of which happen to use the same internal IP addressing schemes (192.168.0.*). I also need a static address for my VirtualBox VM so I can connect to my testing web server. Are there any routers which will allow me to connect to multiple outgoing VPNs and assign different internal IP addresses through NAT? Is such a thing even possible, or are there alternate solutions available? Thanks!

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• ssh can't connect after server ip changed

  - by Kery

  I have a server with ubuntu installed. After I change the network configuration and restart server, ssh client can't connect server any more. But in the server I can use ssh client to connect itself and the netstat command shows that sshd is listening port 22. And in my computer (win7) ping command is OK to server's new IP. The configuration in /etc/network/interfaces is: auto eth0 iface eth0 inet static address 10.80.x.x netmask 255.255.255.0 gateway 10.80.x.1 I'm very confused about this. Hope somebody can give me some idea. Thank you in advance!!!

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• My computer gets hosted when using 3G

  - by WeaklyTyped

  I recently activated 3G(UMTS) connection on my cellular network. I use Nokia S60 phone as a modem while connecting from Scientific Linux 6. While I am able to access net pretty well, the problem is my computer gets hosted. By using ip-address in a web-browser, anyone can access my localhost (running apache), this never happens with my wireline (ADSL) connection. Furthermore, even the Shell prompt changes from: [mach2@localhost ~]$ to [[email protected] ~]$ where XX.XX.XX.XX is the IP of the 3G connection. The very thought of putting my machine 'in the wild' is disconcerting. How can I rectify the situation without disabling services like apache, sshd and others?

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• Ethernet cable unplugged after updating from windows 8.0 to 8.1

  - by Pehmolelu

  Yeah, so I went and updated my windows 8 pro to 8.1. Now everything else seems to work but the network. The Ethernet just says that Network cable is unplugged, even though it is plugged and I have tried different cord as well and I have tested that the router works. I have tried uninstalling the network drivers (Realtec PCIe GBE) and reinstall them with no success. After installing drivers the Device Management gives error for it "Device could not be started. Code 10" Before 8.1 update I had rt630x64.inf, after update it was netrt630x64.inf, and after installing the latest driver rt630x64.inf. With rt630x64.inf there isn't any error, but it's still not just working. New downloaded version: 8.020.0815.2013 (From Realtek website) The driver before: 8.1.510.2013 (After updating the windows to 8.1) I'm using Desktop PC, no VM. I dont have VirtualBox or Vmware installed. I have checked from BIOS that the card is enabled. I have booted in safe mode with network enabled. Says unplugged there as well. I have put the power off for few minutes and put back on, no effect. If anyone has any kind of suggestions, please tell.

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