[1]   Oskar Andreasson. Iptables tutorial. http://iptables-tutorial.frozentux.net/iptables-tutorial.htm.

[2]   Renaud Deraison. Nessus Vulnerability Scanner. http://www.nessus.org/about/.

[3]   Joshua Drake. Linux Networking HOWTO. LDP (Linux Documentation Project), 2000.

[4]   R. Droms. Dynamic Host Configuration Protocol. http://www.ietf.org/rfc/rfc2131.txt, March 1977.

[5]   Behrouz Forouzan. TCP/IP Protocol Suite. McGraw-Hill, 2000.

[6]   IANA (Internet Assigned Numbers Authority), http://www.iana.org/assignments/port-numbers. The well known ports number.

[7]   Insecure.Org, http://insecure.org/nmap/. Nmap.

[8]   James F. Kurose and Keith W. Ross. Computer Networking: A Top-Down Approach Featuring the Internet (3rd Edition). Addison Wesley, 2005.

[9]   Bhagwandas Pannalal Lathi. Introducción a la Teoría y Sistemas de Comunicación. Limusa Noriega Editores, 1994.

[10]   Alan V. Oppenheim and Ronald W. Schafer. Discrete-time signal processing. Prentice Hall, 1999.

[11]   Alan V. Oppenheim, Alan S. Willsky, and S. Hamid Nawab. Señales y Sistemas (2a edición). Prentice Hall, 1997.

[12]   Rusty Russell. Linux 2.4 Packet Filtering HOWTO. http://www.netfilter.org/documentation/HOWTO/packet-filtering-HOWTO.html.

[13]   Claude E. Shannon. The Mathematical Theory of Communication. University of Illinois Press, 1963.

[14]   SSH Communications Security Corp, http://www.rfc-editor.org/rfc/rfc4251.txt. RFC 4251. The Secure Shell (SSH) Protocol Architecture, 2006.

[15]   SSH Communications Security Corp, http://www.rfc-editor.org/rfc/rfc4252.txt. RFC 4252. The Secure Shell (SSH) User Authentication Protocol, 2006.

[16]   SSH Communications Security Corp, http://www.rfc-editor.org/rfc/rfc4253.txt. RFC 4253. The Secure Shell (SSH) Transport Layer Protocol, 2006.

[17]   SSH Communications Security Corp, http://www.rfc-editor.org/rfc/rfc4254.txt. RFC 4254. The Secure Shell (SSH) Connection Protocol, 2006.

[18]   William Stallings. Comunicaciones y Redes de Computadores (7a Edición). Prentice Hall, 2004.