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Black Box LR11xx Series Router Configurations Guide
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10.2 Firewall Configuration Examples
10.2.1 Basic 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
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:
Blackbox/configure> system licenses vpn_plus_firewall
Enter Security Upgrade License key: 024f3bc296b4ea7265
Internet
DMZ
Remote
User
www.yahoo.com
Web server
Forward PAT
CORP
Reverse NAT
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FTP Server