Port scanning with nmap

Mitja — Thu, 23 Oct 2008 10:31:40 +0000

Nmap is an useful tool for checking the security of a server. Since I don’t use it very often I’ve made a list of useful resources to check when in need.

The first advice, also praised by nmap authors, I got from Trinity from The Matrix Reloaded film.

nmap -v -sS -O 10.2.2.2

-v – verbose output (try -vv for even more verbose)
-sS – “the default and most popular scan option for good reasons”*
-O – OS discovery

Since my server is behind (hope) a good firewall I had to add -P0 option.

nmap portscanner howto

Describing the basic nmap scans

Nmap – Free Security Scanner For Network Exploration & Security Audits

Nmap official page

Nmap reference guide

Nmap manual

Insecure.Org – Nmap Free Security Scanner, Tools & Hacking resources

News and links

BackTrack Security Audit LiveCD

Mitja — Tue, 24 Jun 2008 07:10:42 +0000

Image via Wikipedia

I’ve came across BackTrack today on linux.com RSS feed. I’ll give it a try this summer when I plan to thouroughly test my servers security.