SNAT rule settings in iptables rules

A NAT classification

 

 

Two SNAT Scenario Simulation

 

 

Three SNAT configuration rules

Configure the following two steps on the repeater

1. Open the kernel parameters

[root@localhost ~]# sysctl -w net.ipv4.ip_forward=1

[root@localhost ~]# sysctl -a|grep ip_forward

net.ipv4.ip_forward = 1

net.ipv4.ip_forward_use_pmtu = 0

2. Rule configuration

[root@localhost ~]# iptables -t nat -A POSTROUTING -s 10.10.177.0/24 SNAT --to 10.10.188.232

Configure the default route on the client

 

 

Four tests