There was some lack of depth in my review of ACL's in general, so wanted to jump on my lab to demonstrate some output and concepts for on the job and the exam room. If you read absolutely nothing else in this post, jump down to the bottom where a chaotic looking IPv6 ACL line … Continue reading TSHOOT – IPv6 ACL configs, quirks, and must know IPv6 subnetting for exam day!
The graphic above shows a VPN Tunnels two modes (Transport and Tunnel), along with how their payloads differ when configured with AH (Authentication only) and ESP (Encryption) on the tunnel, and what protocols correlate with all of it. The basics of GRE and IPSec Tunnel Modes and Packet Formats Basic GRE tunnel configuration has absolutely … Continue reading TSHOOT – GRE DEEP DIVE!!! MTU / Fragmentation / TCP-MSS / PMTUD / Recursive Routing / Interface States / must know information for exam day!