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Appendix E: Firewall Example (Page 2 of 2)
Step 2
Under the Rules tab we need to create two new rules. A rule to enable Host A access to the Remote Management Port
(TCP Port 80), and another to access the device attached the to serial port (WAN TCP Port 20001).
After each rule is created be sure to click the
ADD Rule button, once both rules are created select the Submit button to
write the rules to the IPn4G. The Firewall Rules Summary should look like what is shown below.
Step 3
Test the connections. The IPn4G should only allow connections to the port specified from the Host A. An alternate
means to limit connections to the IPn4G to a specific IP would have been to use the MAC-IP List Tool. By using Rules,
we can not only limit specific IP’s, but we can also specify ports that can be used by an allowed IP address.
Rule 1
Rule 2