Apr 20

Internet Connection Sharing (ICS) in Ubuntu/Debian

Scribbled on Sunday, April 20th, 2008

  • Posted by T
Updated on: 03 Feb, 2009 at 5:41 AM IST

Long time back when I installed Ubuntu Fiesty Fawn, I wondered how do I get to enable intenet connection sharing to other computer connected in LAN with mine (on which ubuntu/debian is installed).

Here is one easy solution to do this, thought it would help someone as I was half mad setting up things for internet connection sharing.

Software Required:

  • Firestarter (Its basically a GUI frontend to linux built-in firewall)

Arrangement:

  • One PC(lets say Server) having installed Ubuntu and is connected to Internet using one Ethernet card (IP address is 192.168.1.2) and other Ethernet card(IP address is 192.168.0.1) is used to connect to the PC (let say its Client) having installed Windows in LAN.
  • configuration:

Ubuntu/Debian PC:

Ethernet card eth0(connected to internet): IP address- 192.168.1.2, subnet- 255.255.255.0, gateway- 192.168.1.1, dns- 208.67.222.222 and 208.67.220.220

Ethernet card eth1(connected to LAN): IP address- 192.168.0.1 subnet- 255.255.255.0

Windows PC:

Ethernet Card(connected to LAN): IP address- 192.168.0.2 , subnet- 255.255.255.0, gateway- 192.168.0.1, dns- 208.67.222.222 and 208.67.220.220

  • Now you want to share the internet connection to the Client PC whose IP address is 192.168.0.2

Steps to follow:

  • Install Firestarter from synaptic

OR

Enter this command in Terminal:

sudo apt-get update && sudo apt-get install firestarter
  • Now run it from System > Administration > Firestarter

  • Ready for the first startup configuration..huh :)

  • Select the Ehternet card which is connected to internet, in my case it is eth0

  • Check the Enable internet connection sharing option, and now select the Ethernet Card which is connected to the LAN

  • Check the option Start firewall now, and then hit Save button

  • Firewall is up running :D

  • Now go to Edit > Preferences in the Firestarter menu, check both options under System tray icon to enable tray mode and when u hit the close button it will be minimized to the tray instead of actually exiting

  • And under Policy check on Apply policy changes immediately

  • Now enjoy the web without any hassles


Enjoyed this post? Subscribe to Full Feeds or by Email and receive free daily updates on this Blog.

No related posts.

Related posts brought to you by Yet Another Related Posts Plugin.

  1. 9 Responses to “Internet Connection Sharing (ICS) in Ubuntu/Debian”

  2. 1

    great article!

    “linux firewall” == iptables?!

    By LMZ on Mon 21st Apr, 2008

  3. 2

    great article!!!
    but i need more help, i still can’t connect to another laptop..
    mine is ubuntu 8.10 connected to internet while the other is xp
    my idea is i want have connection trough wireless or most commonly it said peer2peer/ad hoc or something..
    Thanks for your help..

    one more thing if xp which connected to internet, how my computer connect to xp use wireless too. my computer have xp and ubuntu. when i use xp the connection easily established. but when i use ubuntu it can’t connect to the xp who belong to my friend.

    thank once again.. sorry if my grammar make you terrible..(my native language is not english)

    By Purwanto S on Thu 27th Nov, 2008

  4. 3

    thanks for your help

    By Purwanto S on Thu 27th Nov, 2008

  5. 4

    hi! i’m new to linux, can anybody guide me on how to set-up ubuntu as host and windows as client with ICS.

    i have adsl modem and d-link des-1008d switch.

    heres my setup and it is wired:

    sysunit1

    NIC0 is directly connected to ADSL model
    IP: the one that provided by my ISP via DHCP

    NIC1 is connected to d-link des-1008d switch
    IP: 192.168.0.1

    sysunit2
    IP: 192.168.0.2
    subnet: 255.255.255.0
    gateway: 192.168.0.1
    dns: ISP server IP
    dhcp server: do i need to setup this?

    sysunit3
    IP: so on so forth

    my sysunit1 is configured to DHCP (coz my ISP never gave me static IP).

    am i need to use my ISP server IP as DNS server?
    do i need to supply dhcp IP server in client units?
    is my setup correct?

    please help!

    thanx in advance!

    By Jose on Fri 03rd Apr, 2009

  6. 5

    @Jose

    Yes the configuration looks right. Just fill in the DNS: 208.67.222.222 and 208.67.220.220 or if your ISP has provided specifically DNS server address then use that one.

    You do not need to setup anything in dhcp server.

    Here is the configuration for sysunit2
    IP: 192.168.0.2
    subnet: 255.255.255.0
    gateway: 192.168.0.1
    dns: 208.67.222.222
    dns: 208.67.220.220

    Thats it !

    By T on Wed 08th Apr, 2009

  7. 6

    i’ll do it.

    thanx T!

    By Jose on Thu 09th Apr, 2009

  8. 7

    Hi, nice tutorial

    I’ve been using firstarter to share my internet connection for my nome network, it working fine, but I get a little problem here that I cannot share my file over the network anymore unless I stop firestarter. and ofcoure when i stop firestarter I cannot share my internet connection.

    I use ubuntu interpid as gateway and vista homw premium as client.

    Its look like firestarter block file sharing on my network.
    Any idea to solve this problem?

    Thank you

    By alvin on Sat 09th May, 2009

  1. 2 Trackback(s)

  2. May 15, 2008: Internet Connection Sharing (ICS) in Ubuntu/Debian « A Bittersweet Life | blog
  3. Dec 11, 2008: links for 2008-12-10 - ArcIris- Web Design in Spain, Remote Support | Diseño Web y Soporte Remoto · Arc Iris

Post a Comment

April 2008
M T W T F S S
« Mar   May »
 123456
78910111213
14151617181920
21222324252627
282930  
Entries (RSS) and Comments (RSS). Theme by Bob. Tweaked by T. Hosting by Whost.in. Decolonized Pagan is powered by WordPress.