Netopia CLI 874 manual IP Network Address Translation NAT Commands, Overview

2-110 Command Line Interface Commands Reference

IP Network Address Translation (NAT) Commands

IP Network Address Translation (NAT) Commands

ip nat public tag dynamic from-address to-address

ip nat public tag static pub-from-address pub-to-address

ip nat public tag pat { pub-address 0.0.0.0 } [from-port to-port]no ip nat public [ tag ]

ip nat map list-tag priv-from-address priv-to-address pool-tag no ip nat map [ list-tag ]

show ip nat map list-tag

ip nat server list-tag priv-ip-addr pub-ip-addr { port-name pub-start-port [ pub-end-port ] }

{both tcp udp } priv-start-port

no ip nat server [ list-tag] show ip nat server list-tag

show ip nat translation

Overview

Network Address Translation (NAT) makes use of five basic structures:

■“public” or externally visible address ranges

■“map” rules that bind an interior, private address range with a public address range

■“map-lists”, which are ordered lists of maps

■“servers”, which define a mapping between a private IP address and port and a public IP address (and the same port)

■“server-lists” which are lists of servers.

ip nat public tag dynamic from-address to-address

This command allows you to allocate a dynamic range of exterior, public addresses for use by Network Address Translation. This range of addresses will be associated dynamically with private addresses you will define when you create a map. tag is the name you assign to the range, and it can contain up to 16 characters.

Example:

The following creates a dynamic public range of 8 addresses starting at 163.176.12.1:

ip nat public "my second range" dynamic 163.176.12.1 163.176.12.8