Black Box LR11xx Series Router Configurations Guide

Blackbox/configure> system licenses vpn_plus_firewall

Enter Security Upgrade License key: 024f3bc296b4ea7265

10.2Firewall Configuration Examples

10.2.1Basic Firewall Configuration

Figure 18 illustrates the basic elements of a firewall. Refer to this illustration in the configuration example below.

Figure 18 Basic Firewall Configuration

Remote

www.yahoo.com

Web server

User

 

Forward PAT

Internet

Reverse NAT

 

10.2.1.0/24

 

CORP

DMZ

 

 

10.3.1.0/24

 

FTP Server

A typical and basic firewall implementation is one which protects traffic to and from a network, a server farm, and the Internet. In this example, the firewall features in the Black Box router will protect the CORP network and the server farm in the DMZ from unauthorized access from the Internet.

To create this basic three-armed firewall configuration, complete these steps:

Step 1:Configure the Ethernet interfaces and the WAN interfaces with IP addresses:

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Black Box LR1112A-T1/E1, LR1114A-T1/E1, LR1104A-T1/E1 manual Firewall Configuration Examples, Basic Firewall Configuration