Ubuntu Networking :: Sharing Internet Connection Through Multihomed Computer?
Dec 2, 2010
I am in college and live in a dorm room. As a dorm resident, I have access to only one wired network connection and I am not allowed to connect it to a router. My primary computer is multihomed and I was hoping I could share network access (eth1) through eth0 to a router. Then I want to hook up my secondary system to the router. I am not using the WAN port on the router. I believe this makes it act like a switch, which seems to be what I want.Here is my /etc/network/interfaces file on my primary computer
Code:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
[code].....
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Feb 5, 2010
I am using Ubuntu 9.10 and trying to use Internet Connection Sharing through my Dell Mini 9 laptop.
The incoming internet is from wireless The outgoing internet is from Ethernet I am using a crossover cable as I have heard this is necessary I followed the 9.10 method on my Auto Eth 0 connection Here is a link to the Ubuntu Documentation I used The computer I am trying to share to does not pick up the internet being shared from the cable.
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Aug 4, 2010
I want to use the wifi card in my laptop to share my internet connection to my Android Phone.Android phones don't support Ad-hoc networks yet (maybe not ever) so I need to the shared network in Infrastructure mode not ad-hoc mode.Using Ubuntu 10.04, If I click on the NetworkManager Applet ( 0.8 ) and select Create new wireless network, it will create an ad-hoc network, I then tried changing this to infrastructure, but it didn't work.Is there some way of modifying this created network to make it appear as infrastructure, or alternatively create a shared internet connection in infrastructure mode?
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Mar 5, 2009
A friend of mine is trying to setup internet connection sharing in Ubuntu, which is something I've never dealt with before. Here's the situation:One desktop PC is dual-booting Ubuntu and Vista. This box is connected wirelessly to the router and can access the internet just fine. The desired setup is to have an xbox360 connected (wired) to the desktop PC, allowing it to share the internet connection.
1) A crossover cable would need to be used between the desktop PC and the xbox.
2) The xbox would still have the router's internal IP as the default gateway (I have zero experience configuring networking on an xbox... I hope these options are easily available).
3) The internal IPs can all be on the same network (i.e. router = 192.168.1.1 ; desktop = 192.168.1.100 ; xbox = 192.168.1.101)
4) IP forwarding would need to be enabled on the Ubuntu host
Is there anything I'm overlooking or just oversimplifying, or should that just about do it?
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Feb 5, 2010
At my home I am using firestarter to connect my XBOX 360 to the internet and it works perfectly, never crashes etc and I get a moderate NAT which I've never experienced any problems in having.
I have my devices set up like this
eth0 - ifconfig eth0 192.168.2.1 netmask 255.255.255.0 broadcast 192.168.2.255
XBOX - 192.168.2.10 netmask 255.255.255.0 broadcast 192.168.255 gateway 192.168.2.1
This configuration works perfectly on my router at my house which has the IP of 192.168.0.1
However at my friends house he has a router with the IP adress of 192.168.2.10 or 192.168.2.7*, I don't remember exactly but I'll find out tonight. I have tried changing my IP settings on my xbox and eth0 to no avail. I noticed instantly that the XBOX IP is the same as my friends router. what the new settings would be, or simply changing the router's IP.
However there is also an issue with the DNS servers. I can't find them anywhere on the router or on the router box itself. I heard that I could point it towards my default gateway however.
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Feb 18, 2010
How to share internet between two ubuntu PCs via bluetooth?
I have a Desktop and a Laptop. Their Configuration is as below:
Desktop:
Laptop:
Internet Connection: I want to use my desktop internet connection via blutetooth for this computer.
So the question is that how to share internet connection between these two Ubuntu computers via Bluetooth?
Remember that:
I've seem that HOWTO about connecting ubuntu PC to internet via mobile phone. I don't mean that!
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May 4, 2010
i have an evdo connection with which i connect to the internet. i have been trying to share this connection for quite a few days from my lucid machine to a windows 7 pc but have failed. i have tried dhcp3-server, firestarter, network manager's built in capabilities but have failed! today i manually configured da windows 7 pc to an ip address within da range which network manager ws assigning when 'shared to other computers' ws selected and it worked! Now da question is how do i do it automatically? dhcp3-server never starts, it always fails with the error 'not configured to listen' or sumthng like it! Plus i want the wireless of my laptop to make an ad hoc connection to my mobile fone, which is also no possible...i think its some problem with da dhcp server.
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Jun 20, 2010
I'm trying to share the internet connection of my Windows XP Virtual Machine (virtualbox) to Ubuntu. I know it sounds weird, but what happens is that i'm using a 3G modem to connect to the internet and 3G connections are still very unstable with ubuntu's network manager. Fortunately, the modem works a lot better with my Virtual Machine. I have already set up a "host only" network between my Windows XP guest and my Ubuntu host and i can they can ping each other but i still can't share the connection of my virtual machine. I already selected "share this connection" on win xp but i think i still have to configure something on ubuntu for it to work. The interface Ubuntu uses is vboxnet0 (not eth0).
This is the last thing to do before i can get rid of my Windows XP partition
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Jul 31, 2010
i have searched and searched for an answer but nothing i've found has worked for me what i have is an old computer with 2 network cards in it the 1 conected to the internet is eth1 one connected to the xbox via crossover cable is eth2, what i'm trying to do is share the internet connection to the xbox using ubuntu,i've tryed alreadyusing the network manager,using firestarter,ip tables,even nat,and all have failedi've been using ubuntu for 4yrs now, and i have always before been able to find answers to my problems by simply googling the answer. but this is one i can't seem to find an answer on.
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Nov 18, 2010
configuring Internet Connection Sharing from my Ubuntu 10.10 machine to a Windows XP machine. I've seen How To's but they didn't work, yet.
The Ubuntu machine connects to the Internet through a DSL USB modem that required packages not provided with the distribution, and specific instructions to configure it; so getting Internet working alone was difficult. As a result, I don't even use Network Manager, rather connect using the command pppoe-start. The machine is connected to the Windows PC through a simple cable, through the Ethernet card.
Some tutorials I've seen on ICS are for machines with two Ethernet cards, or for wireless connections; but I've seen none for a USB modem. However I once found one, years ago, and it worked, but I couldn't find it now. It was using iptables, and I didn't really understand what I was doing, but it worked. But then I had to format the disk, and now I can't find a way to get it working again.
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Dec 9, 2010
I have a laptop with Easy Peasy / Intrepid Ibex connecting to internet through wifi (firewalled VPN), a PC with Windows 7, and a crossed ethernet cable to connect them. How can I get Internet on the PC? I tried to connect them but I can't even ping each other!
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Jul 25, 2011
I have a modem connected to my router (pfsense on 192.168.1.1) which is then connected to a wireless AP (192.168.1.253). A number of PCs pick up the wireless and all is well.I've just received another broken PC that I've kicked into life and was going to run a FreeNAS box with it to back up a number of the PCs on the network. I've actually hooked this up via ethernet to my "server" PC (192.168.1.125 on its wlan NIC). Its all set up so that the server eth NIC (10.42.43.1) is connected to the FreeNAS box (10.42.43.2) and the FreeNAS box can ping both interfaces of the server, the router and the net, and any other box on the 192.16.1.x network. The problem is that I can't for the life of me get any of the 192 boxes to ping the FreeNAS box. I'm presuming its a routing / gateway issue with the server box but being pretty damn hopeless with these things I've been stumbling about breaking things.
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Mar 5, 2010
My ifconfig of RHEL 5 is
Code:
My windows ip config is ( DNS IS 172.31.1.30)
Code:
Ethernet adapter Local Area Connection:
I want to access internet on windows system through this RHEL system .
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Jan 30, 2009
I have an ubuntu 7.10 ICS server that works fine and I have routed my traffic using firestarter to my windows PC. my server's IP is 192.168.0.1 and my windows client is 192.168.0.2. now, I have bought another PC and I want to assign 192.168.0.3 to it and connect it to ubuntu server. in windows, all I needed to do was to connect the first client to first network card, second one to second network card, bridge two connections in my server, assign 192.168.0.1 to the network bridge in my server and 192.168.0.2 and 192.168.0.3 to my clients, then share my internet connection. I also could access shared files in any computer from all of them. can I have the same functionality with a linux server?
I'll make a list to make it easy if you don't wanna read the whole post:
things I want:
1. assign one ip address to multiple interfaces in linux, making them bonded.
2. sharing the internet connection with both clients.
3. ability to use all shared files over a network.
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Jan 23, 2010
i want to share the internet connection from Laptop to PC via LAN crossover cable
here's how i connect to the internet in laptop, and connected PC via LAN:
i need to share pppoe(ppp0) to (eth0) , that is what i've been doing in Windows before, but i dont know how to share in Linux, i tried to follow Ubuntu Help about ICS, but it doesn't work
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Jul 6, 2010
I have been using windows 7 for awhile now, and i was using connectify (an internet connection sharing program that turns your laptop into a wireless router), and i'm planning on completely switching to Linux from a dual boot, and i was wandering if there is a way to share an internet connection (mainly to my PS3) on Ubuntu 10.04 x64, and wirelessly if possible, though i wouldn't mind if it was through Ethernet.
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Aug 29, 2010
For the last 3 or so hours I have been trying in vain to simply give my mobile phone wifi internet access from my netbook. I have tried to google and follow some howto's and guides, but they're either too old or don't explain it very well. I'm fairly new to use of Linux and of wireless networks, but can handle setting them up in Windows. So basically, having said that, I believe I mostly understand how this whole thing is supposed to work theoretically but I just feel as though I lack the experience to jump the wireless hurdle AND the Linux hurdle at the same time. I have provided some information below.
- Setup is based on Lucid netbook remix install with a Maverick kernel update due to lack of driver support for wireless NIC - I can confirm wireless does work properly for connection purposes
- I followed [URL] and kind of followed [URL however I couldn't even tell how to run Network Manager, even though Synaptic tells me it is installed
- When I ran into problems trying to install ipmasq I found [URL] and followed what the response told me to which allowed me to restart the dnsmasq and the dhcp3-server at least
- I have restarted the entire netbook several times throughout the process.
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Nov 3, 2010
I am trying to establish an adhoc connection in my ubuntu 10.10 and share my cable internet throughout this connection with my Android phone. I have read some guides but I couldn't be successful. (I have another windows mobile, and it couldn't connect too). I have installed Firestarter in order to enable internet sharing. My main Problem is that, no one can obtain IP adress from the adhoc connection, whether Firestarter is active or not. What should I do in order to make the other devices gain IP address from this connection. If I have to set static IP what should I do exactly?
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Dec 1, 2010
I've got access to my LAN and the Internet via my wired ethernet connection. I'd like to share that access with my iPod Touch (device shouldn't really matter) via an Ad-hoc wi-fi network.
This tutorial in the docs seems to describe the right setup but is very out of date (7.04). Instead I found this tutorial and followed it to create the Ad-hoc wireless network. I was able to connect my touch to the resulting ad-hoc network without a problem, but I didn't have LAN/Internet access.What's the next step to get the clients on the ad-hoc network out to the Internet?I found this page in the docs that says I'd need to install dnsmasq-base and uninstalling dnsmasq. I checked and dnsmasq-base is already installed but dnsmasq is not. I do have dnsmasq in /usr/sbin but the package description makes it sound like this should come with dnsmasq. Is the page out of date? Will uninstalling dnsmasq cause other problems?
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Jan 30, 2011
Im living in a student-city where we get one internet-cable in the wall each, if we need more we are told to use a switch. But, since ive got some tech that depends on wifi, I was wondering if its possible to setup my ubuntu to work like a sort of wifi-switch?
Basically, Im not allowed to set up anything that resembles a router..(so no dhcp) all i need is what a switch would do, only wireless and wpa/wep would be very nice
Atm ive got my cabled network plugged into my onboard ethernet-port, and ive got a d-link DWA-556 (Atheros AR5008 I think) wifi card that i wanted to use to share my connection. is this doable?
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Jan 13, 2010
I have recently installed Fedora 12 and want to share my internet connection with other pc's at my home including windows pc. My linux machine is connected to internet via DSL connection.
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Mar 8, 2009
I have no internet in Linux due to my only way to get internet is through my blackberry curve phone sharing ( I think some call this tethering) internet to the pc. It works fine in winblows of course with the provided winblows software, so I booted over to Linux, fired up VMware workstation 6.5, set up the internet in it, and I have internet in my guest os in vmware which is 32 bit xp media center. I right clicked the connection from "network connections" and went to share this connection. Now I'd like to share it to my host os, 64-bit Ubuntu 8.10 in Raid 0. Do I need to be using NAT or Bridged. I've set up internet sharing before but not virtually.
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Jun 9, 2011
I am fairly new on CentOS and am in the process of setting up a small home office network that shares Internet access through the Linux (CentOS) box.I have two network interface cards The Linux box is also the DHCP server. My challenge is to get the client machines to access the Internet! I have a PPP connection to the ISP. Essentially I followed these Instructions CENTOS REDHAT Internet Connection Sharing. Pretty straight forward but I am still not able to get clients to access the Internet. I defined the DNS server through DHCP (196.44.x.y). I assumed it has to do with default gateway and it is set as follows: on the Linx box the gateway is my ppp0 link. DHCP uses eth1 (LAN card) fixed IP as the gateway. All clients are reflecting this information. The firewall (iptables) is reflecting the FORWARDING and POSTROUTING rules as advised.
Is there a step I mioght have missed to get this working? I tried to Google but its not getting me far.
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Mar 4, 2011
I am wanting a computer with an external dialup modem (ppp0 modem through a com port /dev/ttys1) to act as a gateway to the internet, forwarding internet traffic through ethernet (eth0 is set to static 192.168.2.2) to a router (the router is 192.168.2.1) where it will be broadcast to other wireless computers like my laptop (192.168.2.3). I've had this setup until recently when the gateway computer (the one with the modem) died. Now I'm replacing that machine with another box and an install of Ubuntu 10.10 but so far things aren't working for me.
Success so far:I have dialup access working on the new box. Took me a while to work out the configuration for getting dialup working, though the IP address is Dynamic (or it won't stay connected), "Check carrier line" is off, and "Ignore Terminal Strings (stupid mode)" is on in order to successfully connect and stay connected to my ISP. I also had to make my normal (non-root) user "lancer" a member of the "pid" group (the reboot) in order to use gnome-ppp as non-root. The laptop (192.168.2.3) is successfully connecting to the router (192.168.2.1) as I can see the router configuration page when I type http://192.168.2.1 into the laptop's web browser. This setup is unchanged from how I had it before when this was previously working and I don't want to change how the router itself is set up. What I want is to know what to fix in the new box in order to get it connected to the router (through ethernet) and bridging the internet through.
My problem is that whenever I plug in the eth0 from the gateway (192.168.2.2) to the router (192.168.2.1), Ubuntu's automatic plug-me-in network detection kicks in and I find my dialup no longer working through some kind of IP conflict (at least that's what I think it is). Maybe I don't have the "gateway" correctly assigned? (in the gateway computer for the ethernet connection, I had it pointing to itself as I don't know what to put for "gateway IP" as that is automatic So, just to check my connection, here I am pinging google (from the gateway computer which has the dialup modem) once a dialup connection has been made.
Code:
lancer@lancer-desktop:~$ ping www.google.com
PING www.l.google.com (74.125.237.17) 56(84) bytes of data.
64 bytes from 74.125.237.17: icmp_req=1 ttl=55 time=179 ms
64 bytes from 74.125.237.17: icmp_req=2 ttl=55 time=176 ms
64 bytes from 74.125.237.17: icmp_req=3 ttl=55 time=158 ms
[Code]...
What do I need to do in order to make Ubuntu of my gateway computer stay connected to my dialup but also simultaneously share an ethernet LAN to my wireless router and feed traffic to the other computers from there? I have googled this but some of the most promising instruction (e.g. http://www.ubuntugeek.com/sharing-in...in-ubuntu.html) call for packages like dnsmasq or ipmasq which seem defunct now in Ubuntu 10.10. Other pages seem to suggest dual-networks "can't be done" in Ubuntu [URL].. (what!?! I had it before my other gateway died)
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Feb 26, 2010
I was connected to internet by wired connection in my home. I was able to share my Internet connection to other computer by proxy using squid. My question is, Can I share my internet connection to mobile device by WiFi? I'm using ubuntu 9.10 in my laptop.
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Jan 16, 2011
I just want to use Internet Connection Sharing (ICS) to connect to the internet. I have done a massive amount of troubleshooting, but some of it seems to contradict itself, and the only two things that I know for sure are that it used to work, and that my Ethernet cable is not the problem. When I use Terminal utilities like ifup and dhclient it seems that it can not determine IP information, but when I try to put it in manually, the "Apply" button grays out right after I finish typing it in. When I try to connect normally, in KDE or GNOME, the icon acts like it's connecting, then instead of having the connected icon, I receive a notification that "the network has been disconnected", and it goes back to the disconnected icon.
Oh, and by the way, I know that I could probably find a workaround, but I have limited resources, and this used to work. The Linux is a Dell desktop with Fedora 12 and the Windows is a Windows 7 HP laptop.EDIT: I hope that I didn't mess something up, but I accidentally used system-network-config to try putting in the IP address there, and ended up changing it back to the original settings, but the computer is now calling it Auto Ethernet in the taskbar icon, although sudo iwconfig in the terminal still calls it eth0.
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Dec 27, 2010
I have two computers:
- one is my desktop, running ubuntu. it has two NIC's one is wired (eth0), the other is wireless (wlan0).
- the other is my laptop, running archlinux. two NIC's as well (eth & wlan).
I would like to connect my desktop to my router via eth0 and connect my laptop to my desktop via wlan0, providing internet access to my laptop. i would like both computers to be able to use the internet simultaneously (not all packets would be forwarded).
Any manner of doing this would be ok, but if this is a simple enough task to do it by simply configuring some files (e.g. /etc files) rather than installing some unnecessarily big application, then that would be wonderful!
Also, not really as high a priority but if possible, i would like this to perhaps not be limited to my laptop. connecting any device (a psp or pda for example) to the internet this way (making it a hotspot in a sense) would be super! encrypting the connection (WEP for instance) would be ultra-mega!
Miscellaneous info:my desktop uses dhcp to connect to the router.
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Oct 14, 2010
How do I tell the shared connection that it has a static IP and that I dont want a DHCP on the network?Do I have to set up DHCP on the box with the shared connection, even if that box only runs DHCP for a single IP address being the eth0 that is shared?Or can I tell the shared connection that it has a static IP and still allow network manager to run the shared connection?Or should I specify static IP's for all clients and the shared network manager and install say firestarter on the gateway to run the NAT for the eth0 out to eth1.
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Sep 22, 2010
plz can any one help me in configuring linux server 5.0 to share the internet connection to thinclient and the steps reqiure at client side and server
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Jan 4, 2011
I am setting up a Beowulf Cluster using CentOS 5.5. I have the head node with two NIC devices eth0 and eth1. eth0 is the one that is connected to the WAN while eth1 provides the internal LAN connection. I am trying to configure internet connection sharing with the slave nodes on the network so that I can update/install software as needed via ssh sessions using yum. I have set up the master node with the requisite changes to iptables to enable IPv4 forwarding. From my slave nodes I can ping ip address from the terminal, but my domain name resolution is not working. i.e. if I ping [URL] it can not resolve, but if I ping 74.125.224.50 (one of google's IP's) I can communicate with the machine without a problem. I also ran the configuration tool provided in the README section of the forum on the slave node and the master node. The links are:
[URL]
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