Route basic reference, nullrouting, gateway, bridge | Linux | Cli

Print kernel IP routing table :
route
Add a default gateway :
route add default gw 192.168.1.10
Kernel IP routing cache :
route -Cn

3 methods to Reject a host (nullroute):
route add -host 192.168.1.51 reject
route add 65.21.34.4 gw 127.0.0.1 lo
ip route add blackhole from 202.54.5.2

3 methods to Reject a network (nullroute):
route add -net 192.168.1.0 netmask 255.255.255.0 reject
route add -net 65.21.0.0/16 gw 127.0.0.1 lo
ip route add blackhole 202.54.5.2/29

Add a route for a network :
ip route add 172.1.0.0/16 via 10.0.0.25

Sow the routing table :
ip route show

Adding a bridge :
ip link add name bridge_name type bridge
Set up :
ip link set bridge_name up
Set eth0 as master :
ip link set eth0 master bridge_name
Unset eht0 as master :
ip link set eth0 nomaster

Auteur : Harlok

2019-05-13 16:55:26