Several years back I’ve been concerned in an exciting discussion focusing on NTP authentication and whether or not you can actually put into action it reliably on Cisco IOS. What I received out of it (apart from a doing work instance) was the sensation that NTP and it is implementation in Cisco IOS was beneath-comprehended and below-documented, so I wrote an write-up about it. Of system the net model received shed in the mists of time but I continue to keep my archives handy.

Previous weekend I migrated that write-up to blog.ipSpace.web. I hope you are going to nevertheless uncover it practical though it is very old, the fundamentals haven’t altered in the meantime.