UBUNTU internet connection help...

getyourkarthick · 07-28-2009, 08:45 AM

To setup up a proxy server,i have instaled ubuntu 8.10 in a machine,i have 10 systems which has windows xp..and i have connected all these systems in 16port Dlink switch..the machine which i installed ubuntu has two lan cards,eth0 is connected to broadband router and eth1 is connected to switch..in xp we can easily share internet connection..but being a beginner i dont know how to share net connection in ubuntu...can some one guide me...

**wmorri** · 07-28-2009, 09:49 AM

Hi,

Why do you want to share the internet connection with the ubuntu computer. I thought that you were just settting up a proxy server on it. I would guess that you would be setting up a proxy similar to Squid. If I have got this wrong please fill in the blanks for me.

Cheers!

getyourkarthick · 07-28-2009, 10:46 AM

I have configured internet connection in ubuntu using pppoeconf...and now i want to share this internet connection to all of other 10 systems..

**wmorri** · 07-28-2009, 11:57 AM

Hi,

Ok you are going to need to setup Samba server. I have found a really good and comprehensive guide to setting it up here. A Samba server essentially tells all the windows boxes that your linux box is just another windows box and they can connect to it, because windows won't connect to linux boxes natively.

Cheers!

getyourkarthick · 07-29-2009, 12:56 AM

I have made a search on google and found this...Is this correct???

1. Start by configuring the network card that interfaces to the other computers on you network:

# ifconfig ethX ip

where ethX is the network card and ip is your desired server ip address (Usually 192.168.0.1 is used)

2. Then configure the NAT as follows:

# iptables -t nat -A POSTROUTING -o ethX -j MASQUERADE

where ethX is the network card that the Internet is coming from

# echo 1 > /proc/sys/net/ipv4/ip_forward

3. Install dnsmasq and ipmasq using apt-get:

# apt-get install dnsmasq ipmasq

4. Restart dnsmasq:

# /etc/init.d/dnsmasq restart

5. Reconfigure ipmasq to start after networking has been started:

# dpkg-reconfigure ipmasq

6. Repeat steps 1 and 2.

7. Add the line "net.ipv4.ip_forward = 1" to /etc/sysctl.conf

# gedit /etc/sysctl.conf

8. Reboot. (Optional)

**wmorri** · 07-29-2009, 11:32 AM

Hi,

I don't know that much about it. I have general knowledge on this topic. If that works for you then great, but I am not sure.

Cheers!

07-28-2009, 08:45 AM	#1 (permalink)
getyourkarthick Registered User Join Date: Nov 2008 Location: Chennai Posts: 75 OS: XP2 / Linux	UBUNTU internet connection help... To setup up a proxy server,i have instaled ubuntu 8.10 in a machine,i have 10 systems which has windows xp..and i have connected all these systems in 16port Dlink switch..the machine which i installed ubuntu has two lan cards,eth0 is connected to broadband router and eth1 is connected to switch..in xp we can easily share internet connection..but being a beginner i dont know how to share net connection in ubuntu...can some one guide me...

07-28-2009, 09:49 AM	#2 (permalink)
wmorri Moderator/Fedora Amb. Join Date: May 2008 Location: /pm/etc Posts: 2,826 OS: Window 7/Fedora 10 My System	Re: UBUNTU internet connection help... Hi, Why do you want to share the internet connection with the ubuntu computer. I thought that you were just settting up a proxy server on it. I would guess that you would be setting up a proxy similar to Squid. If I have got this wrong please fill in the blanks for me. Cheers! __________________ Linux Forever!

07-28-2009, 10:46 AM	#3 (permalink)
getyourkarthick Registered User Join Date: Nov 2008 Location: Chennai Posts: 75 OS: XP2 / Linux	Re: UBUNTU internet connection help... I have configured internet connection in ubuntu using pppoeconf...and now i want to share this internet connection to all of other 10 systems..

07-28-2009, 11:57 AM	#4 (permalink)
wmorri Moderator/Fedora Amb. Join Date: May 2008 Location: /pm/etc Posts: 2,826 OS: Window 7/Fedora 10 My System	Re: UBUNTU internet connection help... Hi, Ok you are going to need to setup Samba server. I have found a really good and comprehensive guide to setting it up here. A Samba server essentially tells all the windows boxes that your linux box is just another windows box and they can connect to it, because windows won't connect to linux boxes natively. Cheers! __________________ Linux Forever!

07-29-2009, 12:56 AM	#5 (permalink)
getyourkarthick Registered User Join Date: Nov 2008 Location: Chennai Posts: 75 OS: XP2 / Linux	Re: UBUNTU internet connection help... I have made a search on google and found this...Is this correct??? 1. Start by configuring the network card that interfaces to the other computers on you network: # ifconfig ethX ip where ethX is the network card and ip is your desired server ip address (Usually 192.168.0.1 is used) 2. Then configure the NAT as follows: # iptables -t nat -A POSTROUTING -o ethX -j MASQUERADE where ethX is the network card that the Internet is coming from # echo 1 > /proc/sys/net/ipv4/ip_forward 3. Install dnsmasq and ipmasq using apt-get: # apt-get install dnsmasq ipmasq 4. Restart dnsmasq: # /etc/init.d/dnsmasq restart 5. Reconfigure ipmasq to start after networking has been started: # dpkg-reconfigure ipmasq 6. Repeat steps 1 and 2. 7. Add the line "net.ipv4.ip_forward = 1" to /etc/sysctl.conf # gedit /etc/sysctl.conf 8. Reboot. (Optional)

07-29-2009, 11:32 AM	#6 (permalink)
wmorri Moderator/Fedora Amb. Join Date: May 2008 Location: /pm/etc Posts: 2,826 OS: Window 7/Fedora 10 My System	Re: UBUNTU internet connection help... Hi, I don't know that much about it. I have general knowledge on this topic. If that works for you then great, but I am not sure. Cheers! __________________ Linux Forever!