Firewalls: Firewall Misconfiguration
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Firewall Misconfiguration 1.
1. Configuring the console computer:
1. Log-in or continue the session.
2. Type in the following commands.
>delete filter ether1.in
>add filter ether1.in
>set filter ether1.in 1 permit icmp
>set filter ether1.in 2 deny icmp
>set ether1 ifilter ether1.in
>save filter
2. Question: On the client computer can you
1. Open the FTP connection __________
2. Open the telnet connection __________
3. PING to the server __________
3. Configuring the console computer.
1. Log-in or continue the session.
2. Type in the following commands.
>delete filter ether1.in
>add filter ether1.in
>set filter ether1.in 1 deny icmp
>set filter ether1.in 2 permit icmp
>set ether1 ifilter ether1.in
>save filter
4. Question: On the client computer can you
1. Open the FTP connection __________
2. Open the telnet connection __________
3. PING to the server __________
4. Discuss the results from the two different
configurations.
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