Debian NAT configuration

Debian NAT configuration-Linux Release Technology-Debian information. For details, refer to the following section. My configuration content:
1. The first step is the PPPoE configuration. This is very simple. Run the pppoeconf command and follow the wizard step by step. After the configuration is complete, start the PPPoE command: pon dsl-provider (sometimes it is okay to directly enter pon ). Command to disconnect PPPoE: poff (or poff-).

2. Create/etc/init. d/nat. sh as follows:
#! /Bin/sh
Echo "Starting PPPoE ..."
/Usr/bin/pon dsl-provider
Echo "Enabling IP Forwarding ..."
Echo 1>/proc/sys/net/ipv4/ip_forward
Echo "Starting iptables rules ..."
# Refresh all chains
/Sbin/iptables-F-t nat
# Only trans package
# Note that the-s parameter in the following line needs to be modified according to your network conditions
/Sbin/iptables-t nat-a postrouting-s 192.168.0.0/24-o ppp0-j MASQUERADE

3. # chmod 755/etc/init. d/nat. sh

4. If you want to enable NAT automatically at startup, edit/etc/init. d/rcS and add the following content at the end of the file:
/Bin/sh/etc/init. d/nat. sh

Note: The above content is mainly copied from the dual debian installation note.

5. If you want to manually start NAT, run:
#/Bin/sh/etc/init. d/nat. sh

6. In fact, the machine sets the gateway to the eth0 IP address of Debian, and then sets the correct DNS server.

7. Get it done!