Cisco RV082 NAT Example

Cisco RV082 One To One NAT – Access Rules Example

Example:
Public IP Address: 75.75.75.75
Private IP Address: 192.168.1.10

In this example we will NAT 192.168.1.10 to 75.75.75.75 and open up TCP Port 23 (Telnet) to the inside host from outside.

– Login to the Cisco RV 082 through the browser
– On the left click on Setup then One-To-One NAT
– Click Enable One-To-One NAT. In the Private Range Begin: fill in192.168.1.10. In the Public Range Begin type 75.75.75.75. In theRange Length type 1. Click Add to List. Click Save.

Click on Firewall on the left.. Click Access Rules. Click Add.
For Action click Allow
For Service choose TELNET TCP 23-23
For Log: choose the option you want
For Source: choose the outside interface of the Router. In my case it isWAN 1
For Source IP: Choose ANY (if you would like it to be available to anyone on the Internet
For Destination: Choose the Inside IP address of the NAT 192.168.1.10 (NOT The Public IP Address)
Click Save

Now create a new rule to deny any other access to the NAT’d host:
Click on Firewall on the left.. Click Access Rules. Click Add.
For Action click Deny
For Service choose Any
For Log: choose the option you want
For Source: choose the outside interface of the Router. In my case it isWAN 1
For Source IP: Choose ANY (if you would like it to be available to anyone on the Internet
For Destination: Choose the Inside IP address of the NAT 192.168.1.10 (NOT The Public IP Address)
Click Save

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