Cisco Systems RV320K9NA, RV325K9NA Setting Up One-to-One NAT

Setup

Setting Up One-to-One NAT

38 Cisco Small Business RV320/RV325 Administration Guide

To add or edit an entry on the Service list:

STEP 1 Click Service Management. If the web browser displays a warning about the

pop-up window, allow the blocked content.

STEP 2 To add a service, click Add in the Service Management table.

To edit a service, select the row and click Edit. The fields are open for

modification.

If the web browser displays a warning about the pop-up window, allow the

blocked content.

STEP 3 You can have up to 30 services in the list:

•Service Name—Short description.

•Protocol—Required protocol. Refer to the documentation for the service

that you are hosting.

•External Port—External port number.

•Internal Port—Internal port number.

STEP 4 Click Save.

Setting Up One-to-One NAT

One-to-one NAT creates a relationship that maps a valid WAN IP address to LAN IP

addresses that are hidden from the WAN (Internet) by NAT. This protects the LAN

devices from discovery and attack.

For best results, reserve IP addresses for the internal resources that you want to

reach through one-to-one NAT.

You can map a single LAN IP address or a range of IP addresses to an external

range of WAN IP addresses of equal length (for example, three internal addresses

and three external addresses). The first internal address is mapped to the first

external address, the second IP internal IP address is mapped to the second

external address, and so on.

To open this page, select Setup > One-to-One NAT in the navigation pane.