% \copyright, \texttrademark, $^\circ$ (degree sign)
\clearpage

% Use \cite{Ziegler} to reference
\begin{thebibliography}{Ziegler}	% <---- Widest Label to be put here

\bibitem[Ziegler]{linuxFirewalls}
Robert L. Ziegler, {\em Linux\reg Firewalls}, Second Edition, 
New Riders Publishing (2002).

\bibitem[Admin]{admin}
Evi Nemeth, Garth Snyder, Scott Seebass, Trent R. Hein, {\em Unix\reg System Administration Handbook}, Third Edition, 
Prentice Hall (2001).

\bibitem[Kurose and Ross]{compNetworking}
James F. Kurose, Keith W. Ross, {\em Computer Networking: A Top-down Approach Featuring the Internet},  
Addison Wesley (2001).

\bibitem[Anonymous]{maxLinuxSec}
Anonymous, {\em Maximum Linux\reg Security},  Second Edition,
Sams Publishing (2001).

\bibitem[Parker and Sportack et. al.]{tcpipUnleashed}
Anonymous, {\em TCP/IP Unleashed},
Sams Publishing (2000).

\bibitem[Toxen]{realWorldLinuxSec}
Bob Toxen, {\em Real World Linux\reg Security: Intrusion Prevention, Detection and Recovery},
Prentice Hall (2001).

\bibitem[Kufman and Perlman et. al.]{cryptoBook}
Charlie Kaufman, Radia Perlman, Mike Spencer, {\em Network Security --- Private Communication in a Public World},
Prentice Hall (2002).

\end{thebibliography}

