AnyConnect 3.0，这些端口将允许的：
TLS (SSL);;;;;;;;;
– TCP 443
SSL Redirection;;; – TCP 80;; (optional)
DTLS;;;;;;;;;;;;;;
– UDP 443; (optional but
HIGHLY recommended)
IPsec/IKEv2;;;;;;; –
UDP 500, UDP 4500; (and the client
services port used for SSL)
Legacy IPsec IKEv1 -;
ESP mode – UDP 500, Protocol 50
IPsec/NAT-T; –
UDP 500, UDP 4500
IPsec/TCP; –
TCP XXX;;;;;;;;; (admin
definable)
IPsec/UDP;;
– UDP 500, UDP XXX ;;;;;; (admin
definable)
欲知更多信息，参考AnyConnect VPN客户端的端口信息。