What UDP Port is Used for IKE Traffic From VPN Client to Server?
If you use a VPN client, you may be wondering which UDP port is used for IKE traffic. We’ll answer that question and explain what IKE is used for.
Checkout this video:
Introduction
VPN clients use the IKE protocol to establish a connection with the VPN server. IKE uses UDP port 500 for traffic between the VPN client and server.
The UDP Port Used for IKE Traffic From VPN Client to Server
The UDP port used for IKE traffic from VPN client to server is 500. IKE uses UDP port 500 for both phase 1 and phase 2 traffic.
The IANA Assigned Port Number for IKE
The IANA has assigned the port number 500 for IKE traffic.
The Wireshark Display Filter for IKE
The Wireshark display filter for IKE is “ip.version == 4 and udp.port == 500”. This will show all IKE traffic between a VPN client and server.
Conclusion
In conclusion, the UDP port used for IKE traffic from VPN Client to Server is 500.