Created on 06-21-2011 05:51 AM Edited on 04-08-2022 11:37 AM By Anonymous
Description
Error: 789 "The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer".
Scope
All FortiOS users with Windows 7 clients
Solution
Windows 7 quick mode implementation requires that the lifetime proposal matches the locally configured values. The default values on a Windows 7 OS for the lifetime proposal are 3600s/250000kbps.
To match this with the FortiGate, the following parameters in the IPSec phase 2 settings must be configured:
config vpn ipsec phase2
edit "dialup_lt2p_phase2"
set keylife-type both
set keylifekbs 250000
set keylifeseconds 3600
next
end
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