Firewalls using Linux
Tuesday June 25th 2002 at 7:00pm
College of DuPage, SRC 1450ab
Firewalls have evolved and diversified to the point that most users on the
are not only familiar with the concept, but are most likely using some type
firewall on a daily basis. From the standpoint of the systems administrator,
increasingly widespread use of firewalls poses both opportunities and pitfalls. The
purpose of this session will be to help users administer firewalls in a sane and efficient
The first part of the discussion will involve an introduction to the various
features available to users of firewalls. After a brief overview of the different
varieties of firewalls, the discussion will cover in depth some of the features
available in the new Linux firewalling software, iptables. We will also examine the
important distinction between firewalls that are stateful versus those that are
The second part of the session will focus on more advanced functions of
iptables firewalls, including network address translation and user-defined chains.
Finally, methods to coordinate the setup, monitoring, and testing of firewalls will be
Blair has been administering Unix systems since 1991, when an
IBM RS/6000 appeared in his research lab at the University of
Illinois. Discovering that his Fortran programs ran significantly
faster on that platform than on a PDP-11, Blair quickly adapted to the
new environment. After completing a Master's degree on the analysis
of EEG data, Blair began focusing more on using networks for information
exchange and collaboration. Blair's current projects involve building
firewalls using IPTables, and administering WebSphere and Jakarta
The next general meeting of UniForum Chicago will be:
June 25th, 2002
7:00pm to 9:00pm
College of DuPage
Building SRC, Rm 1450ab
22nd and Lambert
Glen Ellyn, IL 60137-6599
Take 355 to Butterfield Rd (Rt 56).
Take Butterfield West to Lambert Rd,
then Lambert Rd North to Circle Drive.
Turn right and look for Lot 8 or the Faculty/Staff parking lot (just north of Lot 8).
Walk to the SRC building, and enter through the south entryway.
Room 1450 is on the first floor, accessable through the cafeteria by walking through it to the far end.
All UniForum Chicago general meetings are open to the public free of charge.
Contact Scott Nemec at (630) 990-6265 for additional information.
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