• Interconnections: Bridges and Routers, Radia Perlman. Addison-Wesley. Either first or second edition.
• Firewalls and Internet Security: Repelling the Wily Hacker, William R. Cheswick, Steven M. Bellovin. Addison-Wesley.

Additional Reading

• 802.11 Wireless Networks, The definitive guide, Matthew S. Gast. O'Reilly.