This is my simple ubuntu gateway howto, it's probably not the best way but I'm a newb and this is what worked for me... please post a response on how it may be improved. ------------------------------------------------------------------------- install all nic cards specify custom at ubuntu install prompt ------------------------------------------------------------------------- post install: ------------------------------------------------------------------------- enable universe repository in /etc/apt/sources.list run: apt-get update ------------------------------------------------------------------------- edit /etc/hosts: # you can skip this step if you're not installing bind9 127.0.0.1 localhost.localdomain localhost myhostname 24.XXX.XXX.261 myhostname.com myhostname # external IP 192.168.1.1 myhostname.com myhostname 192.168.1.253 clientHostName.myhostname.com clientHostName
The following lines are desirable for IPv6 capable hosts
#::1 ip6-localhost ip6-loopback #fe00::0 ip6-localnet #ff00::0 ip6-mcastprefix #ff02::1 ip6-allnodes #ff02::2 ip6-allrouters #ff02::3 ip6-allhosts ------------------------------------------------------------------------- eth2 is my connection to the internet, eth0 to the LAN, modify accordingly edit /etc/network/interfaces:
This file describes the network interfaces available on your system
and how to activate them. For more information, see interfaces(5).
The loopback network interface
auto lo iface lo inet loopback
The primary network interface
auto eth2 iface eth2 inet dhcp
LAN
auto eth0 iface eth0 inet static address 192.168.1.1 netmask 255.255.255.0 network 192.168.1.0 ------------------------------------------------------------------------- run: /etc/init.d/networking restart run: apt-get install dhcpd ------------------------------------------------------------------------- edit: /etc/dhcpd.conf #
Sample configuration file for ISC dhcpd for Debian
#
$Id: dhcpd.conf,v 1.4.2.2 2002/07/10 03:50:33 peloy Exp $
#
subnet 192.168.1.0 netmask 255.255.255.0 { option routers 192.168.1.1; option subnet-mask 255.255.255.0; option domain-name "xx.rr.com"; # same as /etc/resolv.conf search value option domain-name-servers 24.31.195.65; # /etc/resolv.conf nameserver value range dynamic-bootp 192.168.1.16 192.168.1.253; default-lease-time 21600; max-lease-time 43200; } ------------------------------------------------------------------------- run: /etc/init.d/dhcp restart run: apt-get install bind9 # not necessary run: apt-get install dnsmasq ipmasq ------------------------------------------------------------------------- upon ipmasq default installation all ports are wide open! secure you server by applying the rules from this site - http://home.cfl.rr.com/aawtrey/ipmasq.html ------------------------------------------------------------------------- That's it, enjoy :)
p.s. reboot may be necessary