****** Linux net commands ******

*** Ver conf interfaces:

# ifconfig eth2
# ip link show eth2
# ip addr show eth2

# ifconfig -a
# ip addr show

*** Configurar interfaces:

# ifconfig eth2 10.0.4.1 netmask 255.255.255.0
# ip addr add 10.0.4.1/24 dev eth2
# ifconfig eth2 down
# ifconfig eth2 up

*** Quitar direcciones IP:

# ifconfig eth2 0.0.0.0
# ip addr del 10.0.4.1/24 dev eth2

*** Ver tabla de ruteo:

# route -n 
# netstat -nr
# ip route show

*** Ver / Conf parámetros de TCP/IP del Kernel:

# sysctl -a
# sysctl net.ipv4.ip_forward
# sysctl net.ipv4.ip_forward=1

*** Agregar/quitar rutas:

# route add default gw 10.0.1.2 
# route del default gw 10.0.1.2 

# ip route add 0.0.0.0/0 via 10.0.1.2
# ip route del 0.0.0.0/0 via 10.0.1.2

# route add -net 10.0.0.0/24 gw 10.0.1.2
# ip route add 10.0.0.0/24 via 10.0.1.2

*** ARP Ver:

# arp -an
# ip neigh show

*** ARP agregar / quitar:

# arp -s 10.0.1.2 00:1a:11:22:2f:63
# arp -d 10.0.1.2

# ip neigh add 10.0.1.2 lladdr 00:1a:11:22:2f:63 dev eth0
# ip neigh del 10.0.1.2 dev eth0