a filter table and a connection table for a stateful firewall that is
as restrictive as possible but accomplishes the following:
Allows all internal users to establish Telnet sessions with external
Allows external users to surf the company Web site at 184.108.40.206.
But otherwise blocks all inbound and outbound traffic.
internal network is 222.22/16. In your solution, suppose that the
connec- tion table is currently caching three connections, all from
inside to outside. You’ll need to invent appropriate IP addresses
and port numbers.
The following filter table is used to accepts all internal users to establish Telnet sessions with external hosts and accepts external users to surf the company Web site at 220.127.116.11, but locks all inbound and outbound traffic.
The following connection table is used to verify the connection table to know whether the packet is a part of an ongoing TCP connection or not. If the packet is not a part of connection, then firewall rejects the packet data.