(LinuxWorld) -- My last SysAdmin column was a modest attempt to bring some
basic awareness on Linux 2.4 firewalling. This week we will continue on the
security-focused path, bringing forth a plethora of knowledge for the
uninitiated. The topic: PortSentry from Psionic Software.
PortSentry is an easy-to-install application that is designed to assist a
Linux user in their attempts to stop those cold-hearted crackers from
breaching the mighty fortress that is your Linux machine. Specifically,
PortSentry runs as a daemon on the protected host. When running, it listens
to TCP/UDP ports that you specify. If it detects a port scan, it will block
the scanning IP from connecting to your machine.
Don't log in as root You should only log in as root when absolutely required.
If you... (more)
(LinuxWorld) -- In our most recent SysAdmin article I promised an overview of
Snort, the open source network intrusion detection system. I considered not
writing the article after seeing the volume of options available to users of
Snort, but decided that since I have received International Fame and
Recognition from my security series, that I would go ahead with the article.
The following... (more)
(LinuxWorld) -- My first article on LXP was essentially an introduction, and
a basic HOWTO on LXP as a whole. This article will detail the basics of
creating an actual application with LXP. However, before we get into that, I
would like to introduce you to a particular feature of LXP -- reserved
objects.
LXP, like PHP, implicitly creates a global variable in memory for each CGI
argument... (more)
(LinuxWorld) -- As a Linux consultant and programmer, I find many newcomers
to Linux have preconceived ideas of how Linux should work, which leads to
confusion and problems.
Whether they are former Macintosh or Windows users, Linux newbies are
accustomed to frequent crashes and rebooting. PC users often sport a
worldview where the expression of a computer's power is limited to the
softw... (more)
Over the past year, I have watched and written about various Linux technical
issues and gained invaluable experience within my own company, Command
Prompt. My experience and the revelations that I have had at the last two
LinuxWorld expositions have given me some insight into where Linux is going.
The August 2000 LinuxWorld Conference & Expo was crazy. The show had outgrown
the San Jose Co... (more)
Joshua Drake is the co-founder of Command Prompt, Inc., a PostgreSQL and Linux custom development company. He is also the current author of the Linux Networking HOWTO, Linux PPP HOWTO, and Linux Consultants HOWTO. His most demanding project at this time is a new PostgreSQL book for O'Reilly, 'Practical PostgreSQL'
Keith Bergelt
Gaurav Mantri
Aditya Banerjee
John Karamitsos
Kaj van de Loo
Bob Little
Alois Reitbauer
Chris Schin
Richard Gordon
Anil Parambath
