So I’ve reached an interesting situation with a client. They are currently running a Cisco ASA 5505 running version 8.2 with no ability to upgrade because of a memory limitation. From what I’ve gathered from on-site techs this device doesn’t support IKEv1 and must use ISAKMP for the phase 1 build of the tunnel. Is this information accurate and if so, what solutions could I present to them to get a tunnel setup in Azure. They have no interest in upgrading the 15 year old router as well as upgrading the memory which I don’t see as a viable option with the age of the device.