Ubuntu Networking :: DNS For Temporary Internal LAN Only?
Dec 6, 2010
I am currently working with a cloning project using FOG on Ubuntu 10.10 (Desktop). While there is certainly a learning curve, all seems to be going well.
For the initial project, I have this "cloning network" isolated completely. Meaning, it is not connected to my main network/domain switch - FOG is handling the DHCP, I have a dedicated managed switch handling the routing between the FOG server and the client clones.
The main problem I am having is that Ubuntu is not able to resolve the hostnames of the client computers.
I know this is because I do not have DNS setup on my Ubuntu PC.
What is the best route to take in order to resolve this? Can I use bind9 to take care of it, or is that too complicated for what I need it to do?
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Feb 14, 2011
I have builded a svn server using apache before. But recently I can not check out from the svn server,and error code is as follows:
svn: Can't find a temporary directory: Internal error
I have searched in the google,they said no space on the server.But my server have much space.
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 49G 22G 24G 48% /
tmpfs 220M 0 220M 0% /dev/shm
/dev/sdb1 917G 867G 3.8G 100% /mnt/md0
/dev/hda1 151G 129G 15G 91% /mnt/meego
The server is at the /dev/hda1 partition.
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Aug 12, 2009
I am attempting to setup a network to network VPN tunnel between our main office and a temporary location. This location need full VPN access back to the main office's network.Anyhow we have spent about 3 solid days attempting to make this work without any great success. Here is our network scheme for these two devices.
Network A (Main Office) (OpenBSD using isakmpd)
Network: 172.16.8.0/24
External IP: 1.1.1.1 (obviously not the real IP)[code].....
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May 31, 2011
CLIENT A - 10.10.10.2
|
ROUTER - eth0 - 10.10.10.1
ROUTER - eth1 - 10.10.20.1
[Code]....
Everything is working fine and CLIENT A can talk to CLIENT B and vice versa, with only one problem - CLIENT A cannot ping 10.10.30.1.
I checked routing several times, there is no NAT and firewall is disabled on the SERVER.
CLIENT B can ping and access any device in the diagram. CLIENT A can ping and access any device in the diagram too, however cannot ping eth1 of SERVER (10.10.30.1). ROUTER can ping any device in the diagram except eth1 of SERVER (10.10.30.1).
If I launch 'ping 10.10.30.1' from CLIENT A and run tcpdump on SERVER eth0 I see no hits at all. If I launch 'ping 10.10.30.1' from CLIENT A and run tcpdump on SERVER eth1 I see ICMP requests coming from CLIENT A but no replies.
It doesn't look like a routing problem because clients A and B can communicate with each other. Also, we have around 20 similar installations but this is the first time CLIENT A cannot ping internal interface of SERVER.
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Jan 14, 2010
How can i build an internal dns server for my network, but don't use the top level domain, e.g:. mycat.com. I want to use mycat.kgn. And I want to put a mycat.kgn mail server on the network for internal uses.
My setup:
dns mx mail2.mycat.com (my server)
mx mail.mycat.com (godaddy)
inet-gateway & firewall & mailserver:
centos 4, mail2.mycat.com
nic1 - internet
nic2 - 192.168.0.1
kerio email server 6
All workstation & server uses:
ip: (below)
netmask: 255.255.255.0
gateway: 192.168.0.1
dns: 192.168.0.1
Workstations:
windows & linux
nic1 - (192.168.0.20 - 192.168.0.199)
Printers:
HP laserjet
jetdirect (192.168.0.211 - 192.168.0.249)
Data server:
1. ubuntu 8.04 LTS, nic1 - 192.168.0.8
2. redhat AS 2.1, nic1 - 192.168.0.10
3. xenserver 5.0, nic1 - 192.168.0.11
- windows 2003 terminal server, xen-nic1 - 192.168.0.210
- winxp sp3 accpac, xen-nic2 - 192.168.0.2
- win2000 sp4, xen-nic2 - 192.168.0.200
Config: I need a dns server with:
dns mx zimbra.mycat.kgn 192.168.0.127
A mycat.kgn 192.168.0.1
A samba.mycat.kgn 192.168.0.128
A www.mycat.kgn 192.168.0.1
NS ns1.mycat.kgn 192.168.0.129
All workstation and servers:
ip: (same as above)
netmask: 255.255.255.0
gateway: 192.168.0.1
dns: 192.168.0.129
ldap all machine to zimbra.mycat.kgn for login info and password.
map drive g: to samba.mycat.kgn data-share (with users rights from ldap)
I tried to do this in virtualbox, but fail badly! I created 6 vm using ubuntu 804 and 910, but my dns was not getting any records with dig, so I found an howto on powerdns. But I had to use mycat.com and not mycat.kgn?
I will draw my network to be!
each machine:
ip: (sameas above)
gateway: 192.168.0.1
dns: 192.168.0.129
dns-nameserver 192.168.0.129
nameserver 192.168.0.129
and if the dns server does not find the info it forward it to the gateway 192.168.0.1
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Apr 16, 2010
Now I'm not too clued up about networking and IP addresses. However, I know that I have an IP address for my router (which is dynamic) and then all of my machines have internal address e.g.
192.168.0.2
192.168.0.3
etc...
My server, had the internal address of 192.168.0.4 but now has changed to 192.168.0.7 what causes this to happen? I have to change my port forwarding on my router to allow access to my server from outside my network.
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Aug 29, 2010
Basically, i want to be able to type a domain in my browser e.g. default.dev and it direct to the ../www/default folder on the Ubuntu Server on my network. The reason being is that as a web developer i have a number of sites that i'm working on locally and i'm getting tired of adding the domain to my hosts file and then creating a virtual host in Apache - i believe this can be done with BIND - is this right? If so what steps are required?
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Dec 28, 2010
If I try ping a host on my internal lan from my ubuntu notebook the host name never resolves, but if I ping www.domainname.xxx it will resolve because our dhcp server is setup as the dns server too. If I use the connect to server tool and select samba share and specify host by name, it can resolve that and the shares show up... same dns server, same machine, but different interface/program. My real reason behind this is because my synergy+ keeps falling over whenever the synergy servers dhcp lease expires and it gets a new I have to then specify the new address and change configs.
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Jul 10, 2011
It's been ages since I've been on here I've been messing around with BackTrack. I've come back to Ubuntu but seem to be having some problems getting my wireless network thingy working. Here are the specs of my system. Any advice on fixing this would be very very apprciated.
02:06.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller (rev 01)
02:08.0 Ethernet controller: Intel Corporation 82562ET/EZ/GT/GZ - PRO/100 VE (LOM) Ethernet Controller Mobile (rev 01)
10:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)
On another note I'm trying to run debain I've got no startx on there or anything like that it's feeling very basic atm. I want to keep startx outta there but I can't connect to the Internet and run apt-get install to grab handy things.
I'm hoping whatever I am gonna do to solve this on Ubuntu will let me connect up to my wireless network with the internal network thingy. However if it doesn't I'm guessin I can just connect up physically to the router. Any tips on doing this from the command line?
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Oct 6, 2009
I am not too knowledgeable on networks, however I think this should be possible.I have a computer at work, which is connected to the work network. I have files stored on the central server here and also my local computer.
At this place, computer support say "We do not offer this service". However they also say "The simplest way to do what you are asking is to install an ssh server on your actual workstation".I have done this, and it the openssh server is working because I can test from my workstation by doing ssh user@hostname and it works.What I want to do however, is to connect from outside the network. Firstly, is this possible, and secondly, what is the syntax for ssh in order to do it.
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Apr 1, 2010
I am running ubuntu 8.04 on a Fujitsu S6420 with internal HSDPA. Any idea how to activate HSDPA ?
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Jun 5, 2010
I currently using Ubuntu 10.04 LTS
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Jul 13, 2010
I have an older laptop, a Toshiba Satellite Pro 6100 that has a switchable internal wireless connection. It will not connect to my router. I am using the 10,04 netbook remix. When I use lshw in terminal this is what I get:
*-network
description: Wireless interface
physical id: 1
logical name: eth1
[Code].....
Should it not be identified as wlan0? I know a whole lot about Ubuntu linux because I don't. I did a clean install over XP and am using this laptop as a learning tool for linux in hopes to divorce windows completely.
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Oct 8, 2010
My old G USB network stick died and I also cannot get my internal ethernet to pick up my router. I've tried installing ndiswrapper, but I keep getting prompted to insert the installation cd for ubuntu's Jaunt Jackalope, which is what I am currently operating. I don't have an installation disk. I installed this version a while ago via usb stick (which I no longer have). Is there any way I can install ndiswrapper without having to use a ubuntu installation disk? I'm hoping installing ndiswrapper will solve my inability to connect wirelessly to the net via either my ethernet card of the new NetGear N100 usb network stick I just purchased.
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Nov 11, 2010
I have a registered domain that resolves (via dyndns) xxx.mydomain.com to my external facing router -easy no issues there. Behind the router I have several machines (some VMs) running webservers, mail etc... What I want to be able to do is redirect the external traffic based on xxx to the relevant internal machine and serve the content back to the external world.
I have tried using a http rewrite of xxx.mydomain.com to the relevant machine an it works fine from within my network, however externally the re-direct fails as the master DNS servers have no record of internal DNS setup in my network (obviously).
So is there anything I can do to get xxx. recognized externally? I'm only just starting to get my head around how DNS, HTTP, TCP etc all hang together. Am I barking up the wrong tree with rewrite? Should I be looking at proxys?
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Apr 19, 2011
I've just installed ubuntu on my father's netbook hp 210 mini 3g with internal 3g modem. At the beginning everything was fine - system automatically detected modem and asked for PIN code. I was very surprised but during download some updates connection broke.. and since then ubuntu doesn't detect modem. I have even reinstalled system
In the broadband connection wizard there is no device detected. I'm on ubuntu 11.04, but on the 10.10 was the same problem.
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May 10, 2011
My Intel 5100 AGN adapter works horribly in Ubuntu. I want to disable it, so I can use a USB wireless adapter that works normally.
I cannot find a reliable way to permanently do this.
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Jan 28, 2009
cannot ping internal network
I am a new user to Linux but in the last couple of months gained some Idea about it,I am trying to set up a small network in my office having 3 windows xp PCs, two fedora10 PCsI have an adsl router with 4-port hub connecting to the internet, one switch (say sw1) and one linux PC (say linux1) is connected directly to the router, the three win xp PCs are connected to switch sw1.all the above is working fine, I am able to get connected to Internet In all the systems, and able to network among all the above four.Now I want to make the linux1 as a proxy server for, hence I added another network card into it connected it to another switch sw2, which is connected to another linux pc (say linux2).
I have tried a hundred things, and googled an equal no. and finally posting it here.In order to reduce confusion I have disabled DHCP in all machines, and given static ips insteadNetworkManager was not happy about it, hence to fix my static IP i disabled NetworkManager ('chkconfig NetworkManager off')
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May 11, 2009
I did a new install of Kubuntu 9.04. I use static ip addresses. In an attempt to resolve the issue with the network manger in 9.04, I removed the network manager. I am now able to set the ip addresses just fine and I get to the internet. However, for some reason, I can't get to my internal router. Has anybody encountered this or have a suggestion on what I may try?
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Mar 22, 2010
How to do NAT in Iptables? ..I am trying to NAT IP public:Port to Internal IP:Port (202.a.b.c SMTP to 172.16.1.169 SMTP) ..
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Dec 3, 2010
What i wanted to do was use a linux machine with a wireless and wired interface to act as a router. The wireless interface would be the outside and get its IP via DHCP from the wireless my landlord provides. The wired connection would be for my local pcs. I understand it would be slow having multiple pcs using a single wireless gateway.
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Jul 26, 2011
I have two boxes, 1- Centos router, 2- centos web/mail server..
When trying to receive mail using mail.xxx.xxx in the mail client server settings, it will not resolve to any machine on the internal network... I have to enter the internal IP address in the incoming and outgoing email settings..
Same with the website I host.. I have to enter the internal IP to get access..
It just will not resolve the DNS on the internal network.
Everything works as it should outside my network.
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Feb 27, 2010
I just recently installed a fresh copy of 9.10 server on an older machine I had laying around to use as a router and home server. Everything is setup and I'm on the net on it, except for some reason the Netgear GA311 I'm using for the internal network doesn't seem to be loading a driver. I've tried modprobing 8139 (which it says isn't found) as well as 8139too, 8139 too goes through ok, but it doesn't make any change, with lshw still claiming that it is "unclaimed". It seems that the Realtek chipset this card is based on is extremely compatible with Linux and I'm having trouble finding anyone with a similar issue with it.
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Jun 1, 2010
I want to ssh to a pc in our home network. It is a standard network in terms of a DSL router, dynamic IPs via DHCP, WPA2/PSK security, wireless network connection for all pcs except one which is wired to the router.I got the error "no route to host" from ssh. Openssh-server was already installed. It turned out later that the laptop I want to ssh to (namely the one which is connected by cable) cannot be pinged by any other laptop on the network.
The pc in question (lucid lynx with most recent updates) is online, can ping itself and the router, but cannot ping others in the network and cannot be pinged by them. I suspect a firewall setting of being the problem.
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Jul 13, 2010
I'm using ubuntu server 10.04. I need to create a second network to do some testing. Here's what it looks like so far: WAN > x.x.x.x/9 > router > 192.168.1.0/24 > LAN
I need to do this: WAN > x.x.x.x/9 > router > 192.168.1.0/24 > LAN > ubuntu server (LAMP, dhcp, dns via eth1) [eth0 192.168.1.138] > ubuntu server [eth1 10.0.0.1] The two networks should be transparent to one another. I've got everything working, except routing. Here is ifconfig:
[Code]...
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Dec 9, 2010
Im setting up a server thats connected to a large network. Now my external ip on the network is static and is 10.0.12.15. What I want is to create a dhcp network using the second port of my box. The first port eth0 goes to my network with the static ip 10.0.12.15 and my second port is connected to a switch with the static ip 192.168.12.1. Now dhcp works fine but none of the boxes that are connected to the internal ip cannot connect to the internet. Iv tried using squid and manual static ip routes. Im not using network manager or anything cause its a command line server.
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Dec 25, 2010
Disable internal wireless card & enable external? Can I do this really by network-manager or should I use some other program. If I plug-in external both are connected. If I disable internal by laptop button, I cannot enable wireless anymore in nm-applett (external on).
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Feb 1, 2011
I have a toshiba a15 s127. it didn't have a wireless card so i ordered one and installed it myself. however, my computer is not seeing the wireless card and i don't know what driver i need because the card itself didn't come to me in a box, so i am not sure what brand it is. All i know is that it is an original part.
On another note, when i go to network settings and try to config my wireless settings, i do not know what number to put in the BSSID field. (thinking i use the wireless card's MAC address, but ?) and don't know if i use the wireless card's MAC adress or the wireless router's MAC address or the Modem's MAC address in the actual field for the MAC address. ( i know, i know, i sound totally clueless--well, i am!) {note: the wired network works fine.}
How do i get my computer to see the wireless card and how do i configure my computer once it does see the card?
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Aug 6, 2011
I would like to turn off the internal wireless card since my external wireless card has better signal. Problem is if I turn of the internal card the external card turns off as well. My external card is an alfa awus036h 1000w. Laptop Gateway NV53. How would I disable the internal card and use only my external card?
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Jan 29, 2011
Where is the Temporary Internet files?
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