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Old 05-06-2009, 02:27 AM   #1
iofn
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Registered: Nov 2005
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routing in linux


I got the following ip block from my ISP.

202.51.177.0/29 (Here 202.51.177.1 is my gateway which is located in my ISP's Router, My useable ip is 202.51.177.2 - 202.51.177.6)

I have a linux pc with 2 NIC. I have putted 202.51.177.2/255.255.255.252 in my eth0 which is connected to my ISP And 202.51.177.5/255.255.255.252 in my eth1. My PC is directly connected to eth1. My pc ip is 202.51.177.6/255.255.255.252 and gateway is 202.51.177.5

I can't go to internet. What I have to do in linux box. ip_forward=1 is already enabled. Plz help
 
Old 05-06-2009, 03:34 AM   #2
datopdog
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It is possible that your ISP router does not have a route to 202.51.177.5/255.255.255.252 that is why the traffic is not coming back.
 
Old 05-06-2009, 04:38 AM   #3
arisnb
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I (Tukang Nggame) have idea. Your linux pc use network 202.51.177.0/29.


(202.51.177.1/29)ISP-----(202.51.177.2/29 gw 202.51.177.1)-eth0-Your Linux PC-eth1-(192.168.0.1/24)--Client PC (192.168.0.xxx gw 192.168.0.1)

ISP-----------------eth0--YOUR Linux PC--eth1---------Client PC

In Your Linux PC use NAT !

Last edited by arisnb; 05-15-2009 at 07:26 AM.
 
Old 05-06-2009, 06:05 AM   #4
Shamgeer
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Hi am Networking and linux newbie

Can some one help me to understand,

why do we need to add route in our system or gateway to connect to different network???

what is the concept of "add route -p" command

please help
 
Old 05-15-2009, 07:17 AM   #5
arisnb
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Simple network :
Please read this artcle http://www.linuxquestions.org/blog/a...g-nggame-1960/
-------------------------------------------------------
Routing :
You can add in /etc/network/interfaces

up /sbin/route add -net [network] netmask [netmask] gw [gateway]

exp

up /sbin/route add -net 205.164.219.150 netmask 255.255.255.0 gw 205.164.219.1

Last edited by arisnb; 05-15-2009 at 07:22 AM.
 
  


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