How do I enable TUN/TAP forwarding?
Posted
by
rafal
on Server Fault
See other posts from Server Fault
or by rafal
Published on 2011-06-07T18:20:46Z
Indexed on
2012/10/21
23:06 UTC
Read the original article
Hit count: 411
I have a program which writes packets (destination address 10.3.0.2) to the TUN/TAP interface.
Network:
host1|tun0----eth1(10.3.0.1)|-------------------host2|eth1(10.3.0.2)|
Wireshark captures these packets from interface tun0 but they are not forwarded to interface eth1.
Commands:
sysctl -w net.ipv4.ip_forward=1
sysctl -p
iptables -A INPUT -i tun+ -j ACCEPT
iptables -A FORWARD -i tun+ -j ACCEPT
iptables -A INPUT -i tap+ -j ACCEPT
iptables -A FORWARD -i tap+ -j ACCEPT
/etc/init.d/networking restart
/etc/init.d/openvpn restart
© Server Fault or respective owner
