Michael Rash, Security Researcher

Tutorial on Single Packet Authorization with fwknop

Single Packet Authorization: The fwknop Approach One thing that has been requested a few times is a tutorial on how to use fwknop, so here it is: "Single Packet Authorization: A Comprehensive Guide to Strong Service Hardening with fwknop". This document attempts to cover most usages of fwknop to wrap an SPA layer around arbitrary services, though some less used scenarios such as SPA over Tor and SPA packet spoofing are covered as well. Please contact me if you find any errors, or if you would like to see material added on a particular fwknop use case. The complete table of contents appears below: