Routing between 2 interfaces?

Brian1 · 03-07-2006, 04:27 PM

Then I would try the following.
eth0
IP 192.168.0.1
Subnet 255.255.0.0
Gateway 192.168.0.160
DNS IP ***.***.***.***

ra0
IP 172.16.0.1
Subnet 255.255.0.0
Gateway No Gateway defined

Brian1

m4rk0 · 03-07-2006, 05:34 PM

Hello everyone.

Now after cleaning iptables, routes and everything else, this setup working fine.

Code:

ifconfig eth0 192.168.0.1 netmask 255.255.0.0 up
ifconfig ra0 10.0.0.1 netmask 255.255.255.0 up

route add default gw 192.168.0.160

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

iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -j MASQUERADE

Brian1 · 03-07-2006, 06:36 PM

Glad to see you have it going there m4rk0

Brian1

win32sux · 03-08-2006, 01:08 AM

Quote:

Originally Posted by m4rk0

Hello everyone.

Now after cleaning iptables, routes and everything else, this setup working fine.

Code:

ifconfig eth0 192.168.0.1 netmask 255.255.0.0 up
ifconfig ra0 10.0.0.1 netmask 255.255.255.0 up

route add default gw 192.168.0.160

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

iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -j MASQUERADE

that works, but here's a couple changes i think you should make:

Code:

echo "1" > /proc/sys/net/ipv4/ip_forward
echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter

iptables -F FORWARD
iptables -X FORWARD

iptables -F -t nat
iptables -X -t nat

iptables -P FORWARD DROP

iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT

iptables -A FORWARD -i ra0 -o eth0 -s 10.0.0.0/24 \
-m state --state NEW -j ACCEPT

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE