RHEL 4 as a Router?

deepclutch · 08-29-2005, 10:08 AM

Hai
How can we configure Linux system(RedHat) as a router ?
Somebody Knows?

acid_kewpie · 08-29-2005, 10:56 AM

just as a router? well there's loads of things that a "router" can do, but gernally that's a waste of a full server distro. instead you might prefer ipcop or smoothwall. the answer to whatever you want is most likely in the lartc (linux advanced routing and traffic control) howto at tldp.org. if you require more specific help, you need to tell us what functionality you desire.

deepclutch · 08-30-2005, 10:57 AM

But...can i experiment as
below:
1st machine:192.168.0.141
2nd machine:10.0.0.10.
How can I route one machine to other?I doubt some files like
/etc/sysconfig/ifcfg-eth0 copied to /etc/sysconfig/ifcfg-eth0:0
edit /etc/sysctl.conf
net.ipv4.ip_forward=1
and edit gatway addrsss as reversed IPs of 1st and 2nd machines?Help Plsssss

ie,
#vi /etc/sysconfig/ifcfg-eth0
ipaddr=10.0.0.10
S/N mask=255.0.0.0
gateway=192.168.0.141
AND,
#vi /etc/sysconfig/ifcfg-eth0:0
ipaddr=192.168.0.141
S/N mask=255.255.255.0
gateway=10.0.0.10
what2do?what2do?what2do?what2do?

acid_kewpie · 08-30-2005, 11:09 AM

so you want one machine connecting these two? that'd be a case of having ip forwarding enabled on that machine and just having a functional NIC for each connected LAN involved. pretty simple.

deepclutch · 08-30-2005, 11:40 AM

PLEASE CAN YOU EXPLAIN IN BRIEF

acid_kewpie · 08-30-2005, 02:41 PM

don't shout, and say please... and I'd just suggest you look at the ip forwarding howto at tldp.org or an one of a thousand other suitable documents that are already out there. You may want to just use a generic firewall builder like firestarter to configure it for you.

deepclutch · 08-31-2005, 03:35 AM

Hey,I'm not shouting anyway

Solved..
In My RHEL 4 WS , But...I experimented as
below:
1st machine:192.168.0.141
2nd machine:10.0.0.140
In 1st machine,
/etc/sysconfig/ifcfg-eth0 copied to /etc/sysconfig/ifcfg-eth0:0,
A virtual IP with value=10.0.0.10
edit /etc/sysctl.conf
net.ipv4.ip_forward=1(IP forwarding enabled)
and edit gatway addrsss as reversed IPs on 1st machine.
ie,
#vi /etc/sysconfig/ifcfg-eth0
DEVICE=eth0
ipaddr=192.168.0.141
S/N mask=255.255.255.0
gateway=10.0.0.10
AND,
#vi /etc/sysconfig/ifcfg-eth0:0
DEVICE=eth0:0
ipaddr=10.0.0.10
S/N mask=255.0.0.0
gateway=192.168.0.141
then #service network restart
While in 2nd machine,
#vi /etc/sysconfig/ifcfg-eth0
DEVICE=eth0
ipaddr=10.0.0.140
S/N mask=255.0.0.0
gateway=10.0.0.10
save
service network restart
and
#ping 192.168.0.141
It Will work!