How do I configure NAT on Cisco router?

Steps to configure dynamic NAT using CLI.

1. Login to the device using SSH / TELNET and go to enable mode.
2. Go into the config mode.
3. Configure the router’s inside interface.
4. Configure the router’s outside interface.
5. Configure an ACL that has a list of the inside source addresses that will be translated.

How NAT works with example?

A. Network Address Translation (NAT) is designed for IP address conservation. NAT operates on a router, usually connecting two networks together, and translates the private (not globally unique) addresses in the internal network into legal addresses, before packets are forwarded to another network.

How can you determine if NAT is working properly?

Follow these steps to verify that NAT is operating as expected:

1. Based on the configuration, clearly define what NAT is supposed to achieve.
2. Verify that correct translations exist in the translation table.
3. Use the show and debug commands to verify that the translation is occurring.

What are the Nat commands for a Cisco router?

On Cisco Routers, the designation uses the commands ip nat outside and ip nat inside: interface fa0/0 ip nat outside interface fa0/1 ip nat inside interface fa0/2 ip nat inside In this example, we are designating fa0/0 as the Outside interface, and both fa0/1 and fa0/2 as the Inside interfaces.

How to configure static NAT on Cisco IOS router?

To configure Static NAT on a Cisco IOS router to match the translation depicted above, first designate the Inside and Outside interfaces, then apply the following command: This will create a permanent, bidirectional mapping between the Inside Local IP 10.2.2.33 and the Inside Global IP 73.8.2.33. The command above uses the following syntax:

How many IP addresses can a NAT router handle?

With the overload keyword, the Router will translate the source IP and Port as necessary to ensure every internal host will always have an external address they can use when speaking through the NAT router. Each IP address in the NAT Pool can allow approximately 65,000 connections from any number of internal hosts.

How to use the IP Nat outside source list?

This document provides a sample configuration with the ip nat outside source list command, and includes a brief description of what happens to the IP packet during the NAT process. You can use this command to translate the source address of the IP packets that travel from outside of the network to inside the network.