Compartilhe seu Speedy Home com apenas uma placa de rede

Colaboração: William da Rocha Lima

Data de Publicação: 20 de Outubro de 2003

Fonte: Linux Journal

# ------------------ begin nat.sh ----------------- 
#!/bin/sh 
## script to enable masquerading 
## must be run as root after the DSL connection is up 
## usage: sh nat.sh 
# 
# bring up alias interface eth0:0 : 
  
ifconfig eth0:0 192.168.1.1 netmask 255.255.255.0 \ 
 broadcast 192.168.1.255 up 
 
# Next, an iptables rule to enable masquerading: 
  
iptables -t nat -I POSTROUTING -o ppp0 -j MASQUERADE 
 
# Finally, enable ip forwarding: 
  
echo 1 > /proc/sys/net/ipv4/ip_forward 
 
# An optional rule to allow the laptop to talk to  
#  the desktop (otherwise denied by my firewall script) for ssh & samba 
  
iptables -I INPUT -s 192.168.1.2 -d 192.168.1.1 \ 
 -j ACCEPT 
# ------------------ end nat.sh -----------------