Ubuntu Networking :: Setting Up Nat On 11.04?
May 7, 2011
I have built a server, installed Ubuntu 11.04 on it. I have two Nic cards. I am attached to the DSL modem thru the first card and am accessing the web on the server.
I attached a hub to the second port.
I have a Windows 7 client plugged into the hub.
"This setup was working on 2003 Server, now trying Ubuntu"
I followed the directions on the ubuntu site to setup Nat. GUI Method via Network Manager (Ubuntu 9.10 and up). I cannot connect.
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May 20, 2010
Somebody gave me an old Celeron 333MHz system w/ 96 MB RAM and I thought I would set it up as a little torrent server. So I installed Ubuntu server on it, but it does not see the NIC. I know the NIC functions because the person was using it hooked up to a network until a few days ago. Unfortunately, it's an ISA-based NIC and not PCI and my understanding is that I have to pass it IRQ and DMA settings to get it to work. Unfortunately, I wiped the windows 98 partition without thinking of snagging those settings. First of all, lspci does not show the hardware AT ALL. Here's the output I get:
Code:
00:00.0 Host bridge: Intel Corporation 440LX/EX - 82443LX/EX Host bridge (rev 03)
00:01.0 PCI bridge: Intel Corporation 440LX/EX - 82443LX/EX AGP bridge (rev 03)
00:04.0 USB Controller: OPTi Inc. 82C861 (rev 10)
[code]...
The machine is an old 'Compaq Presario 5050' with a really crappy BIOS that doesn't really offer any help. I read a post somewhere that trying to load the 'ne' driver should work, so I tried:
sudo modprobe ne
and it came back saying "no such device".
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Jul 7, 2010
I want to do is make an old computer of mine that I use for web development be accessible to anyone within my LAN only.
so in a nutshell i don't want the world wide web to be able to access this server since I use it for development work only and i do most of my actual development work on another system since most of the applications i use requires windows.
I know you can block incoming traffic to all IPs or add individual IPs to allow in, but how can i make the firewall only accept incoming traffic from those within my LAN network?
if you wish to know what I'm using to configure my firewall, I'm using firestarter on this server
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Jul 23, 2010
I tried to setup a Ubuntu Wired Router according to the manual but found a problem.
At the end of the doc page it says:
Code:
The problem though is that I don't have a wireless connection and what do I put at the end?
It says "bridge-ports eth1 wlan0" so should I change that to "eth1" twice or just leave "wlan0" out or how do I fix this?
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Apr 17, 2011
I want to login to my university server, in windows i used Putty and rdp.the setting in putty (download to my ubuntu and runnig) SSH-> tunnels
destination: 2.bgu.ac.il:3389
source port:7000
on local
session SSH type 1.bgu.ac.il port:22
so far so good i logged in and i can see the files on the 1.bgu the next step is to open RDP and ask him to login localhost:7000Not Working, i use Gnome-RDP and Remmina Remote Desktop Client no luck on both.
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Apr 18, 2011
I was trying to set up my computer as a wireless AP/router. I am using a D-Link wireless dongle for the wireless network. I have ensured it can be put in the master mode. I followed the instructions on [url] and steps seemed to have been completed without a problem.
However, the wireless signal is not being broadcasted. I cannot see it on my phone or my laptop. The only difference I see is that my Ubuntu installation is the desktop version instead of the server edition. However, I don't think that should be the issue!
The ip addr command produces
Quote:
I suspect this down state to be an issue but the command ip link set wlan1 up is not doing anything
Quote:
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Aug 27, 2011
I'm not the greatest with linux in general, I mean I know my way around it okay but theres still a ton to learn, and 11.04 is the first version to work on my custom PC without messing up after I update it so I'm left with natty. Anyway I bought my PC with an Asus U8B-N13 Wireless adapter. The disc it came with has the program to install the drivers in Windows, Mac, and Linux, but the Linux drivers need to be compile and I'm yet to have luck doing so. I've tried to somewhat follow an older guide here: [URL].. but I made it as far as extracting the .tgz, then running the make command and got a couple errors. Here is that attempt:
Code:
dom@NZXT:~$ cd Desktop
dom@NZXT:~/Desktop$ tar -xvzf DPO_RT3070_LinuxSTA_V2.3.0.2_20100422.tgz
DPO_RT3070_LinuxSTA_V2.3.0.2_20100422/
DPO_RT3070_LinuxSTA_V2.3.0.2_20100422/iwpriv_usage.txt
DPO_RT3070_LinuxSTA_V2.3.0.2_20100422/LICENSE ralink-firmware.txt
DPO_RT3070_LinuxSTA_V2.3.0.2_20100422/Makefile
[Code]...
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Jan 28, 2010
I just got a new printer (photosmart premium) and I have tried to set it up in the printing config but the listed printers do not include mine..do I have any other options?
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Feb 13, 2010
how to set up a static IP from Ubuntu... Secondly, on some of the tutorials I read, there was something about changing the DNS server IP adresses. I do know what a DNS server is (Courtesy of www.howstuffworks.com ) but I don't understand why the DNS servers must be changed simply because I chose to use a static IP address.. (My PC connects to the internet via a router.. )
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Feb 21, 2010
I have 4 machines 2 running Ubuntu 9.10, and one running windowsXP, and the forth will be Windows XP,only because some of my printer functions I can only get to work with windows, previous to upgrading to Ubuntu 9.10, I had everything working fine, my windows could see my Ubuntu's and my Ubuntu could see my windows, at that tine only had 1 ubuntu, now windows cannot see ubuntu and ubuntu cannot see ubuntu, my plan is to switch to mythbuntu , when I get things working, because I plan on adding 3 more machines, I have Gadmin-Samba installed on my ubuntu machines, do I need anything else. after upgrading to ubuntu 9.10, I had a system crash and had to start all over, this is just a home network with only one user.
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Feb 23, 2010
I have a problem with ssh, in that it's extremely slow when using putty to connect from Windows. A bit of googling suggested that I should use -u0 as a startup option since there's no DNS entry for this machine.
So, at the risk of sounding stupid, how do I put this options in to the /etc/init.d/ssh file? I tried adding it in the the "set" part but got an error, tried adding another "set" line and got an error and tried adding it to the first command there, but also got an error! Where does it go?
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Apr 20, 2010
I'm trying Ubuntu for the first time; it's actually the first time I've messed with Linux at all-- and, well, it's kind of intimidating. One of my hobbies is playing with dead computers, and long story short, I have Ubuntu installed to a partition on an external drive connected to an older Dell desktop with no internal storage to call its own. The only network adapter I have to spare right now is the rather wimpy USB one that came with said desktop. I have the CD with the drivers to it, but I think the Linux drivers on it are for a different distribution. Am I going to need to scrounge up another network card or adapter, or am I going to have to start sheepishly asking ridiculous questions regarding basic operation of the command console?
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Apr 28, 2010
I have two laptops with Ubuntu 9.10
I want to connect them with a wireless router. phillips snb5600 router.
So I can go online and share files with both laptops
My LG E500 laptop to function as a modem with a connection to the internet with a 3g usb modem.
There are built-in wireless LG E500.
My other laptop is an old webtech without wireless built in, but I have a wireless USB thing fully with snb5600 Router. Ubuntu can find the wireless USB thing. so it's not a problem.
Both laptops can also connect with the router with cable.
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Jul 18, 2010
I've been trying to set up a music server and running into some difficulty.
I want to be able to stream music and video to my network and over the internet.
From what I've read so far ampache is what I would like to use but I've yet to find a user friendly guide on how to set it up. I've never set up a server before so all of the guides and documentation have just confused the heck out of me.
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Aug 1, 2010
I just installed Ubuntu 10.04 and am very excited about using it for the first time. I am very new to computers and stuff though so I don't have much of a clue as to what I'm doing. Although it installed fine, for my wireless connection it says "device not ready". What does this mean and how do I connect to the internet?
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Oct 1, 2010
I am trying to connect to an existing VPN server that I have been using for years now. I am moving my develpment environment over to a Ubuntu box and I must have openvpn working in order to access SVN. It has been a few years since I have been setting up linux boxes. And networking is a soft spot for me. But
The server has been running without problem for a LONG time. A windows computer I have been using connects to it fine and I can access the network on this machine. I am setting up a new computer, but when trying to connect openvpn starts the initialization sequence completes but I cannot ping the network I am trying to connect to.
I use a second VPN connection to connect to an alternative network and it works fine. The difference between these two is that the working vpn connection is a routed IP tunnel and the one that is not working is a bridged connection.
The VPN that is working on this box brings up tun0 while the bridged connection connects but does not bring up a network tun device. The server logs look normal, it just looks like the client is not setting itself up to use the network once connected. (The key/cert pair work find when on a windows box) Just not on this new ubuntu build.
My current client config
Quote:
cert eric@home.crt
key eric@home.key
client
dev tap
[Code]....
The server is using tap, as well as the working windows client uses "dev tap"
It has been a long time since I have been maintaining linux boxes but its coming back slowly.
Do I have to bring a device up manually ?
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Oct 12, 2010
I have installed Ubuntu 10.04 Server on an older desktop with the intent of making it into a firewall box. What I would like to do is hook one nic into the modem, and the other nic into my router. I'm not sure if I want to setup the 2 nics as bridged.
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Oct 15, 2010
I am currently trying to set up my Tenda W311U USB WiFi Dongle under Ubuntu 10.04 (64-bit) on either my Latitude D620 laptop or Optiplex 745 desktop to act as an access point for me to use to connect my DS Lite & DSi (and let ONLY those two devices connect to it) to my network.
I have previously managed to do such under XP Pro by using the Windows drivers and control program along with bridging the dongle with the ethernet, but am unable to use that same method withing 10.04.
For those interested - I have no idea what drivers are running the dongle, only that it seems to let me TRY and access any wifi APs nearby, but won't let me set it up to act as an AP itself.
Edit @ ~5:50oam AEDT; I've been reading another thread which deals with the RALink 2800/2870 drivers (for the chipset in dongles like the Tenda W311U) and how to prevent the 2800 drivers from conflicting with the 2870 and followed the instructions so only the 2870 drivers are left. I've downloaded and unpacked the files for the 3070 drivers, but haven't tried installing them yet.
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Oct 18, 2010
I have spent the last 24 hours trying to work a wireless bridge (a D-Link DAP-1522) into my network configuration. It would connect to our gateway here at home (some 2WIRE piece of garbage AT&T hands out, but I digress), and two computers (an Ubuntu Desktop and an Ubuntu Server) would connect via the bridge.
The bridge SEEMS to connect to the router, and indeed, the Ubuntu Desktop PC is able to access the internet. The server, however, is not, and neither computer can communicate with the other (ping, SSH, etc.) furthermore, the router recognizes the presence of these two computers on some level, but does not seem to know their IP addresses (I assume this is related to the computers' inability to communicate).
Before I get too far into this, here are a few links/items for the sake of clarity. The first is a shoddy diagram of my (proposed) network topology, for all of you out there who, like myself, understand things visually:[url]
This is the output from running "ifconfig eth0" on the Ubuntu Desktop PC, which sits behind the bridge. The PC is connected, and can ping hosts across the Internet, but can only ping the router locally (that is, it can't ping any other device in the house, on either side of the bridge):
Code:
The router uses wireless encryption, not MAC addresses, to restrict access/traffic, and all wireless devices (including the bridge) have been provided with the proper credentials. There shouldn't be any devices being denied access on account of their MAC address. In fact, the router's control panel lists the PC and the Server among the recognized devices (even lists their MAC addresses), but provides no IP address and always considers the two computers to be "offline." And yet, I am writing this very post from the Ubuntu PC. Sigh.
I am very comfortable with computers, and reasonably comfortable with Ubuntu/Linux and the Linux command line -- I've been using the operating system for just over a year now -- but networking issues have always been perched right on the edge of my understanding. In short, it's likely this issue has more to do with me than it does with the hardware itself (although the more forums I browse, the more I start to doubt this bridge...).
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Jan 1, 2011
I installed 10.10, I'm using a HP tower with a cisco usb ae1000 modem. I have been on Linux all of 12 hours. I had installed on a old laptop, and hard wired to the router. I really liked the OS. And Long short I killed the laptop, literally.
So I partitioned the family tower, but I cannot connect wirelessly. And to run hard wire to the router would mean a complete tear down of my desk and set up in the living room area, and that will not help out the marriage long/short term.
on the internet connection and I gone through the panels trying to set up the connection but no luck. I'm running Vista and Ubuntu 10.10. I using vista to post here now.
How do I get it to find the wireless router and set up my connection without being hardwire to the router itself.
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Jan 12, 2011
I set up a static IP address yesterday, following the instructions at the top of this page and since my machine no longer connects to the internet (although all other machines are connecting fine, so I know it's a result of this change).
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Jan 29, 2011
Got 4 onbards nics and would like to bond them into a single 4GB pipe. It is running a number of VM's. I can set up a link in my switch but I am stumped on ubuntu side. I think I have to make a file with entries but not sure where or how.
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Feb 1, 2011
At home, I am running Ubuntu 10.04.1 LTS with openssh server OpenSSH_5.3p1 Debian-3ubuntu5 In my office, we are using CentOS 5.5 with openssh OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 Both my /etc/ssh/sshd_config at home and my ~/.ssh/config has X forwarding enabled.When I log in to my home machine from my office with ssh -X -vv host, I got the following:
Code:
debug2: x11_get_proto: /usr/bin/xauth list :0.0 2>/dev/null
debug1: Requesting X11 forwarding with authentication spoofing.
debug2: channel 0: request x11-req confirm 0
But once I log in, I get:
Code:
home:~>echo $DISPLAY
DISPLAY: Undefined variable.
I tried setting DISPLAY to localhostx.0 (xx from 0 to 10) but none of that works. I have also tried ssh -Y but the result is the same.
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Feb 12, 2011
I recently installed ubuntu on one of my computers and am trying to get all my sharing worked out so I can access stuff with my windows machine. I'm still very stupid when it comes to linux.
Setting up sharing with Samba, I got my /home/user/media folder to share just fine. However I made a folder located on my second drive that I would like to share.
I have this entry for it in my smb.conf
Code:
[80GBshare]
comment = /media/Sifl_80GB/Shared/ folder share
path = /media/Sifl_80GB/Shared
[Code].....
the second drive is mounted on /media/Sifl_80GB and it was formatted as ext4.
My windows machines see the 80GBshare entry but I get the error "network path not found" when I try to open the folder. Does this mount need to be listed in my fstab for this to work correctly? I'm noticing something in the comments of the smb.conf for auto-mounting a cdrom drive when a cdrom drive is accessed by adding a fstab entry, so I'm wondering if this needs to be done with my second drive?
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Mar 28, 2011
I recently purchased an hp 3050 printer because of it's wireless functionality. I found this (click me) where someone got it working. I tried to follow it step by step, but I couldn't get the ad-hoc network to work reliably.
I used the network manager to locate the printer's ad hoc network (it correctly identified it as ad-hoc) I then edited this connection, made it a "Link-local only" network in the ipv4 tab and then connected.
Usually what happens is that networkmanager claims that it has connected. I get a signal strength and everything, but I can't actually communicate with the printer. I entered the ip address (into firefox) given to me by asking the printer to print it's network settings, and I don't get a response.
Notice that I said "usually". I've tried this many times, and one time, I actually connected to the printer, got the browser interface, tried to use the interface to connect the printer to my wireless router, and failed (then the browser interface didn't work anymore [which of course would make sense if the printer tried to connect to the router, but I don't even know if I got far enough into the process for that to be the problem]). The printer does not show up as a device on my wireless router (my router has a list of all devices that are logged into it), so it failed somehow. I have never been able to duplicate that "success" again in spite of the fact that I've used the printers control panel to reset network defaults.
It seems that the people who were on the questions forum had no problem connecting the ad-hoc network. I kind of suspect that there is something wrong with the printer's wireless device.
PS: I noticed that hp-setup has an option to plug a wireless printer in via USB, set it up then it should work wirelessly, however, I couldn't get that to work with this printer.
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Mar 29, 2011
I try setting up Privoxy but I keep getting this error and I don't know how to fix it. I try downloading other network programs and at the end of the download Ikeep getting this error.
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Apr 23, 2011
I can communicate to Windows perfectly (Internet sharing, file sharing, printer sharing, etc), but Windows controls everything, and I can't access any other Ubuntu PC, or host a printer or Internet connection. I have been fighting Samba for quite a long time, and I finally am able to access Windows shares from Ubuntu, but I want to host the shared folders (and everything else) on Ubuntu instead, because I have a bigger HD on it, and it is just a faster computer.
I tried personal file sharing and shared folders, but it doesn't work. I am also not able to access other Ubuntu PCs in the network, for printing, remote desktop, or file-sharing. All the computer are connected to the same Ethernet router. I'm using XP Home SP3, Ubuntu 10.04 x64, and a laptop running 11.04 beta 2.
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Apr 30, 2011
I'm using Ubuntu 11.04 and bluetooth turn/off is not possible. However, with 2.6.37 kernel it is possible. Now i have gathered whole info about the device(mac adress, usb port etc) from 2.6.37 and what i need is to somehow use those info in kernel 2.6.38 so that bluetooth works.
lsusb in 2.6.37 (while bt is on)
Code:
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 002: ID 1241:1603 Belkin Keyboard
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 002: ID 09da:8090 A4 Tech Co., Ltd
[Code]....
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May 23, 2011
I have 4 computers at home: 1 XP, 1 Laptop w/ Win7, 1 Mac, and 1 Ubuntu (hey, I like to try most everything). Anyway, I'm wanting to set up a home server to save everything on so that I don't have 3-4 copies of one file floating around. I was planning on using Ubuntu because I've always heard that Linux is a good system for a server and that Ubuntu is one of the easiest to work with.
Anyway, I just installed the Ubuntu OS, and the only software that I installed with it was Samba (I don't have a printer hooked up to this computer). Is samba the best software to use for this, or is there any other option that would be easier to use? I've heard that with samba there are a lot of things you have to change using the CLI (something about chmod, whatever that is, and others like it), which doesn't bother me, I've used CLI since the years before Windows, good ol' DOS.
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Jun 10, 2011
i have a question, it ought to be a simple task for most but im as noob as they get. In ubuntu 11.04 desktop, how do i change the hostname as well as setting the new domain name?. Temporarily its easy with hostname and domainname in terminal, but i want it to become persistant. Lets say i want the machine name to become computer01 and domain to become homenet.lan. Then i would change the /etc/hostname to contain computer01 only. But what i cant figure is how the new /etc/hosts is supposed to look, the old one is:
127.0.0.1 localhost
127.0.1.1 current_computer_name
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
But how is the new /etc/hosts supposed to look if hostname is to be computer01 and domainname homenet.lan?,
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