Internet access through a NAT proxy with a fixed IP address in Linux

#/Bin/sh
Iptables-F
Iptables-x
Iptables-T nat-F
Iptables-T nat-x

Echo "1">/proc/sys/NET/IPv4/ip_forward

ARP-s 192.168.0.5 00: E0: 11: 01: Ce: BD
Iptables-a forward-s 192.168.0.5-M Mac -- Mac 00: E0: 11: 01: Ce: BD-J accept
Iptables-a forward-s 192.168.0.2-J accept
Iptables-a forward-s 192.168.0.6-J accept
Iptables-a forward-s 192.168.0.0/28-J Drop
Iptables-T Nat-A postrouting-s 192.168.0.0/28-O eth1-j snat -- to-source 58.1
6.172.2

Iptables-a forward-s 192.168.1.2-J accept
Iptables-a forward-s 192.168.1.0/25-p tcp -- dport! 80-J Drop
Iptables-a forward-s 192.168.1.0/25-p udp -- dport! 53-J Drop
Iptables-T Nat-A postrouting-s 192.168.1.0/25-j snat -- to-source 58.16.172.2
Iptables-T Nat-A prerouting-s 192.168.1.0/25-I eth0-P TCP -- dport 80-J red
Irect -- to-port 3128