Using multiple WAN IPs

This article relies on the following:

Introduction

  • Some users get from their ISP more than one routable public IP address.
  • Assume that the WAN IPs are 100.64.0.2/29, 100.64.0.3/29, etc.

Goals

  • Utilize multiple WAN IPs on the same interface.
  • Use a specific WAN IP for a specific LAN host.

Command-line instructions

1. Network

Create an alias for the WAN interface. 

uci -q delete network.wan3
uci set network.wan3="interface"
uci set network.wan3.proto="static"
uci set network.wan3.device="@wan"
uci set network.wan3.ipaddr="100.64.0.3/29"
uci commit network
/etc/init.d/network restart

2. Firewall

Configure destination and source NAT firewall rules. 

uci -q delete firewall.dnat3
uci set firewall.dnat3="redirect"
uci set firewall.dnat3.name="DNAT3"
uci set firewall.dnat3.src="wan"
uci set firewall.dnat3.src_dip="100.64.0.3"
uci set firewall.dnat3.dest="lan"
uci set firewall.dnat3.dest_ip="192.168.1.3"
uci set firewall.dnat3.proto="all"
uci set firewall.dnat3.target="DNAT"
uci -q delete firewall.snat3
uci set firewall.snat3="nat"
uci set firewall.snat3.name="SNAT3"
uci set firewall.snat3.src="wan"
uci set firewall.snat3.src_ip="192.168.1.3"
uci set firewall.snat3.snat_ip="100.64.0.3"
uci set firewall.snat3.proto="all"
uci set firewall.snat3.target="SNAT"
uci commit firewall
/etc/init.d/firewall restart
This website uses cookies. By using the website, you agree with storing cookies on your computer. Also you acknowledge that you have read and understand our Privacy Policy. If you do not agree leave the website.More information about cookies
  • Last modified: 2023/05/17 11:57
  • by vgaetera