When attempting to start a VPN tunnel, in the logs the error "no proposal chosen" is seen numerous times. No other VPN-related entries are present.
Which phase of the VPN negotiations has failed?
A. IKE Phase 1
B. IPSEC Phase 2
C. IPSEC Phase 1
D. IKE Phase 2
Yes, A is correct
https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk114834#Scenario%201