Re: How to edit /etc/init.d/network?
Paul Nathan Puri wrote:
>
> So that my computer will apply the ipchains commands, the ipforward
> command in echo, the ifconfig, etc... at boot?
I'm definitely not a networking guru, but I'll take a shot at it.
First of all, if you haven't already, take a look at the recently
updated IP Masq HOWTO found at the link below. It explains most
everything you need to know including what's needed for 2.2.X vs 2.0.X
kernels.
http://www.tor.shaw.wave.ca/~ambrose/ipmasq-HOWTO.html#toc3
As a simple example, here's my /etc/init.d/network for the gateway
machine on a 2 computer home network. I'm using the plip device
(parallel port cable) instead of network cards, but it's the same idea.
I'm using kernel 2.2.3 now.
--------------------------------------------------------------------
#! /bin/sh
ifconfig lo 127.0.0.1
route add -net 127.0.0.0 netmask 255.0.0.0 dev lo
ifconfig plip0 192.168.1.1 pointopoint 192.168.1.2 up
route add -net 192.168.1.0 netmask 255.255.255.0 dev plip0
echo "1" > /proc/sys/net/ipv4/ip_forward
ipchains -P forward DENY
ipchains -A forward -s 192.168.1.0/24 -j MASQ
# these were used with kernels 2.0.XX instead of ipchains
# ipfwadm -F -p deny
# ipfwadm -F -a m -S 192.168.1.0/24 -D 0.0.0.0/0
---------------------------------------------------------------------
You also have to set the default route on the machine(s) that will be
using the gateway machine to access the Internet or whatever. Here's how
I have the /etc/init.d/network file set up on my other machine:
-------------------------------------------------------------------
#! /bin/sh
ifconfig lo 127.0.0.1
route add -net 127.0.0.0 netmask 255.0.0.0 dev lo
ifconfig plip0 192.168.1.2 pointopoint 192.168.1.1 up
route add -net 192.168.1.0 netmask 255.255.255.0 dev plip0
route add default gw 192.168.1.1
--------------------------------------------------------------------
Tom
--
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