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[2003-10-20] NetCat Security
Netcat is a utility that is able to write and read data across TCP and UDP network connections. If you are responsible for network or system security it essential that you understand the capabilities of Netcat. Netcat can be used as port scanner, a backdoor, a port redirector, a port listener and lots of other cool things too. It's not always the best tool for the job, but if I was stranded on an island, I'd take Netcat with me. During this tutorial I'll demonstrate a complete hack, using Netcat only, just to point out how versatile it is.

[2003-10-15] Looking for Trouble: ICMP and IP Statistics to Watch
During the US/Canada road show this past two years, I've had the opportunity to share many of my favorite tools, tricks and techniques for network troubleshooting and cybercrime detection and testing.

[2003-10-13] Restricting Access by Time of Day
Problem You want a service to be available only at certain times of day.

[2003-10-09] Encrypting Backups
Problem You want to create an encrypted backup.

[2003-10-09] Combining Log Files
Problem You want to merge a collection of log files into a single, chronological log file.

[2003-10-08] Intrusion Detection Foundations
The number of internet attacks is dramatically increasing. Vulnerabilities, configuration problems and different type of attacks are discovered daily.