When referring to IKEv2 with the MOBIKE extension that allows VPN reconnects in mobile roaming situations, no additional protocol or port requirements exist for this scenario. IKEv2 is a streamlined key management protocol for IPsec that is fully backward-compatible with IKEv1 and uses the same ports and protocols.
To learn more about IKEv2 read these resources:
- Understanding IPsec identity and authentication options
- VPN Reconnect: Powerful networking for when the network isn't powerful
This was first published in July 2012