Thursday, March 01, 2007

IP Obfuscation

The phishing blog PhishTank had the following article which was rather interesting:
http://www.phishtank.com/blog/2007/02/09/the-case-of-the-mysterious-hostname/


Basically, it reminds us that URLs (www.hostname.top) and IPs (123.123.123.123) are only formatted this way for human consumption...the computer can take the information in many forms. Take the following links:

www.phishtank.com
http://66.135.40.79/
http://1116153935/
http://0X42.0207.10319/
http://0102.8857679/

By taking the IP address out of base 10 numbers in octal organization...it makes it harder for humans and human made filters to pick-out.

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