The Security Flag in the IPv4 Header

Tuesday, 1 April 2003, 11:36 AM EST

NOTE: This was an April Fool's joke :)

Firewalls, packet filters, intrusion detection systems, and the like often have difficulty distinguishing between packets that have malicious intent and those that are merely unusual. The problem is that making such determinations is hard. To solve this problem, we define a security flag, known as the "evil" bit, in the IPv4 header. Benign packets have this bit set to 0; those that are used for an attack will have the bit set to 1.

[ Read more ]




Spotlight

5 ways to stop the Internet of Things from becoming the Internet of Thieves

Attacks on the IoT can sound like the stuff of a movie thriller, but they are very real. The highly skilled and organized cybercriminals of today have the potential to tamper with a car’s firmware to kill its brakes.


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  
DON'T
MISS

Tue, Jun 30th
    COPYRIGHT 1998-2015 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //