I am trying to establish a Site to site tunnel from Cisco ASA 5510 TO Watch Guard 500E & iam getting the below error in the logs on the ASA
Header invalid, missing SA payload! (next payload = 4)
IP = x.x.x.x, Can't find a valid tunnel group, aborting...!
Group = x.x.x.x, IP = x.x.x.x, Removing peer from peer table failed, no match!