An administrator added the following Ipsec VPN to a FortiGate configuration:
config vpn ipsec phase1-interface
edit "RemoteSite"
set type dynamic
set interface "port1"
set mode main
set psksecret ENC LCVkCiK2E2PhVUzZe
next
end
config vpn ipsec phase2-interface
edit "RemoteSite"
set phase1name "RemoteSite"
set proposal 3des-sha256
next
end
However, the phase 1 negotiation is failing. The administrator executed the IKF real time debug while attempting the Ipsec connection. The output is shown in the exhibit:

What is causing the IPsec problem in the phase 1?