In addition to Liberty Young's comments, I would like to say two things:
1.  There is no such thing as a secure computer when there is physical access 
to it.
2.  Lock down a Linux box procedure: 
<http://www.georgetoft.com/linux/security/locking/checklist.shtml>

George


Quoting Steve Hasz <steve@roatanet.com>:

> Dear PLUG Members,
> 
> Hello to the people I know on the list.  I attended a couple of meetings,
> although I'm not in Phoenix as often as I was.
> 
> I'm doing a volunteer project with some guys using an Open Source mapserver
> tool to show changing environmental conditions in Central America.
> 
> We have a brand spanking new server and install of Redhat, including an IP
> to the machine and a domain set up in DNS.  It's setting at a University
> and
> will be used as the server for the mapserver app which will be served up on
> the web to those interested. It will be a dual use machine to get people in
> the department interested in Linux as a workstation as well, but won't see
> too much use in that regard.  I'm able to SFTP and SSH in to look around.
> I'm about 5,000 miles away, but there is a set of hands there with the
> server.
> 
> I'm somewhat familiar with FreeBSD, since I run a VPS at Verio, so
> understand the basics of using the command line and Apache and config
> files.
> My question is about security.  We want to get the server secure before we
> open it up as a webserver.  Is there a pointer where I can get a detailed
> walkthrough about disabling services, which to disable, what to lock down
> and how?
> 
> Best,
> Steve
> www.roatanet.com - Visitors Guide to Roatan and the Bay Islands
> www.travel-to-honduras.com - Your Travel Guide to Honduras
> 
> 
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