whitepapers
Your data is encrypted. So what? Are you using SSL, AES, 3DES, or something else? Can your data be compromised with a cryptographic attack? What key length are you using? This paper attempts to shed a bit of light on the myths and misconceptions when dealing with encryption.
A very interesting article by Razorpoint's Director of Security Research (and former NSA cryptologist) about cracking a confederate code from the Civil War. This story is one of intrigue, history, and cryptography. A compelling read dealing with real world security, albeit 137 years after the fact.
Think you're secure? Gaining access to your most valuable systems may be as easy as cracking (or, simply guessing) a password. Be sure you have a well chosen password.
A comprehensive list of TCP/IP ports (TCP and UDP), including both legitimate and illegitimate (hacker/cracker) ports.
Keep on top of network security terminology with this extensive white paper.
While nothing is ever "completely secure," and there is no magic product to make every organization immune from unwanted attackers,this Razorpoint document outlines 10 keys to consider seriously regarding effective network security.
This helpful guide illustrates CIDR decimal representations for easy VLSM (Variable Length Subnet Mask) usage.