Single Packet Authorization with fwknop

Monday, 19 November 2007, 12:03 AM EST

Single Packet Authorization (SPA) using "fwknop" is probably one of the coolest recent innovations in server and network access control technology. Just what is SPA, you ask? SPA is a method of limiting access to server and network resources by cryptographically authenticating users before any type of TCP/IP stack access is allowed.

In itís simplest form, your Linux server can have an inbound firewall rule that by default drops all access to any of itís listening services. Nmap scans will completely fail to detect any open ports, and zero-day attacks will not have any effect on vulnerable services since the firewall is blocking access to the applications.

At Ubuntu.

[ Read more ]




Spotlight

New Zeus variant targets users of 150 banks

Posted on 19 December 2014.  |  A new variant of the infamous Zeus banking and information-stealing Trojan has been created to target the users of over 150 different banks and 20 payment systems in 15 countries, including the UK, the US, Russia, Spain and Japan.


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

Mon, Dec 22nd
    COPYRIGHT 1998-2014 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //