TCP
Click on the red underlined text to get to the source
... of a firewall (commercial or homegrown) requires a significant amount
of skill and knowledge of TCP/IP. Both types require regular
maintenance, installation of software patches and updates, and
regular monitoring. When budgeting for a firewall ...
... As an aside, building a "home grown" firewall requires a significant
amount of skill and knowledge of TCP/IP. It should not be trivially
attempted because a perceived sense of security is worse in the long
...
... S. Bellovin, "Security Problems in the TCP/IP Protocol Suite", Computer Communication Review, Vol 19, 2, pp. 32-48, April 1989. ...