Computer Networking


A Logical Approach to Computer Security: Today's virus scanners are easy to fool. 'Malware writers obfuscate their code so that a signature that works today won't work tomorrow for what's essentially the same virus,' says Professor Sanjit Seshia of UC Berkeley. So he and collaborators have developed programs that analyze the semantics of code to separate malware from benign payloads. 'We're trying to develop a more behavioral definition of what it means to be malicious,' he says. 'Perhaps it deletes files on your hard drive or duplicates itself and emails copies to everyone in your address book.' Although technically 'undecidable', the professor claims that 'a good encoding of the problem enables the algorithm to run reasonably fast so we can think of eventually putting it into commercial tools.'

Firewall Forensics (What am I seeing?)

" This document explains what you see in firewall logs, especially what port numbers means. You can use this information to help figure out what hackers are up to. This document is intended for both security-experts maintaining corporate firewalls as well as home users of personal firewalls."

802.11 (WiFi)

Introductory, News, General

Good (or Unwitting) Neighbors Make for Good Internet Access: By Amy Harmon

The Corner Internet Network vs. the Cellular Giants: By John Markoff

PersonalTelco: "To promote and build public wireless networks through community support and education."


Rob Flickenger's book: Wireless Hacks looks quite interesting - and here's a nice little review.

Standards from IEEE

Do-it-yourself: Homemade antennas, etc.

Deep Dish Cylindrical Parabolic Template: Home-made high-gain antenna for any WIFI access point with a dipole (rod - like most of them) antenna.

Security, Network Discovery

Wireless hacking bust in Michigan: "In a rare wireless hacking prosecution, federal officials this week accused two Michigan men of repeatedly cracking the Lowe's chain of home improvement stores' nationwide network from a 1995 Pontiac Grand Prix parked outside a suburban Detroit store."

iStumbler for Mac OSX: "iStumbler is a free, open source tool for finding 802.11b & 802.11g wireless networks. iStumbler combines a compact Aqua user interface with visual feedback of signal strength and encryption." Only works with Apple's Airport card.

Community Network List

Nice list of links: related to securing your network.

GAWD: is a search engine that allows you to find your nearest wireless access point.

A Survey of 802.11a Wireless Security Threats and Security Mechanisms: A Technical Report to the Army G6.

Sandia's WiFi fingerprinting research


"Networking and the BSD Sockets API" : on Mac OSX

Internet Connectivity Matrix