1. Introduction Cisco AnyConnect Secure Mobility Client v4.x is a modular VPN client for remote access. Unlike its predecessor (IPsec-based Cisco VPN Client), AnyConnect is based on SSL/TLS and DTLS , with optional IPsec IKEv2 support. Version 4.x represents a mature release cycle, widely deployed before the transition to v5.x (which introduced NVM and expanded DART).

Client checks for DNS suffix, default gateway MAC, or file/registry presence. If matched → VPN not required (or auto-disconnect).