I was setting up one of our Jr Engineers with a WRV200 (Dynamic IP) and attempted to create a L2L VPN to a Sonicwall TZ210. Under no circumstances could I get the tunnel to come up in Aggressive mode. I wound up having to sign up with DynDNS and bring the tunnel up in Main mode. The Sonicwall never even saw any attempted IKE/ISAKMP attempts from the Linksys, even with interesting traffic.
Has anyone else had any issues creating a tunnel to a site using Aggressive Mode?
