For IPSec VPN, the following ports are to be used: Phase 1: UDP/500. Phase 2: UDP/4500.

Change the default port of IPSec VPN | Fortinet Technical Jan 27, 2019 VPN Pass-Through Setup | DrayTek 1. Disable the VPN service on the router: Go to VPN and Remote Access >> Remote Access Control Setup, un-check the VPN protocol that you want to forward to the router's LAN. 2. Go to NAT >> Open Ports, and open the required port to the IP address of the VPN … Layer 2 Tunneling Protocol - Wikipedia The process of setting up an L2TP/IPsec VPN is as follows: Negotiation of IPsec security association (SA), typically through Internet key exchange (IKE). This is carried out over UDP port 500, and commonly uses either a shared password (so-called "pre-shared keys"), public keys, or X.509 certificates on both ends, although other keying methods

Set Up an IPSec Tunnel

linux - Which ports for IPSEC/LT2P? - Server Fault

The Cisco VPN client is the client side application used to encrypt traffic from an end user's computer to the company network. IPSec is used to encrypt the traffic. When using standard IPSec, IKE is used for the key negotiation and IPSec to encrypt the data. IKE uses UDP port 500 and IPSec uses IP protocol 50, assuming ESP is used.

About Mobile VPN Volume Licenses To use your client software, you need the serial number and license key you received when the purchase was completed. The license is released by the activation code sent via the Internet to the client on the endpoint. For more information, see the What's New in IPSec Mobile VPN Client presentation. See Also. WatchGuard IPSec Mobile VPN Activation