Firewall ports for VPN Traffic

Firewall ports for VPN Traffic


The following Protocols/ Ports need to be opened on the firewall to allow VPN traffic
For PPTP : TCP port 1723 and Protocol 47 (GRE)
For IKE/IPSEC : UDP port 500 and Protocol 50 (ESP)
For L2TP : UDP port 1701
For VPN NAT traversal: UDP port 4500
Cisco VPN Clients : TCP or UDP port 10000
SSL VPN : TCP port 443