> Don't think good penetration testers (and malware writers, alas) don't already... | Hacker News

Hacker Timesnew | past | comments | ask | show | jobs | submit

kalleboo on Oct 20, 2013 | parent | context | favorite | on: This is a valid ipv4 address

> Don't think good penetration testers (and malware writers, alas) don't already know about this trick.

This was also a popular trick among kids at my high school to work around the web content filter and get on social networks

serf on Oct 20, 2013 [–]

yeah, some years back there was also some C code in an issue of 2600 (or maybe a bash script? I cant remember) that obfuscated URLs in this manner. The article that the script was attached to actually used school URL filtering as the example case use.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact