Extensive experience in UNIX system administration on a variety of platforms and systems, as well as standard network information protocols, including DNS, HTTP, NIS, SMTP and SNMP. system accounting and security, access control, backup, and day-to-day operations.

Extensive experience in system administration, security, and software porting and installation on numerous Unix hardware and software platforms.

Experienced in system administration in a team environment, including change control and revision control with RCS, CVS, Changelog, and GNATS.

Experienced in the secure design and implementation of firewalls, web and mail servers on Unix and Windows.

In my consulting projects I have extensive experience with security issues, including designing and implementing authentication solutions, application firewalls and IP filtering.