Suppose you want your firewall to block all incoming Telnet connections but to allow outbound Telnet connections.
Question:
Suppose you want your firewall to block all incoming Telnet connections but to allow outbound Telnet connections. One approach would be to block all inbound packets to the designated Telnet port
(23).
(a) We might want to block inbound packets to other ports as well, but what inbound TCP connections must be permitted in order not to interfere with outbound Telnet?
(b) Now suppose your firewall is allowed to use the TCP header Flags bits in addition to the port numbers. Explain how you can achieve the desired Telnet effect here while at the same time allowing no inbound TCP connections.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Related Book For
Computer Networks A Systems Approach
ISBN: 9780128182000
6th Edition
Authors: Larry L. Peterson, Bruce S. Davie
Question Posted: