Re: FortiGate IPSEC vs. Lancom IPSEC
Could be a NAT timeout on the Lancom if the tunnel is idling for a while. Try to increase either the NAT timeout or the session timeout for tcp/500, tcp/4500, on the Lancom router.
What a pity. The combination of "simple modem" (DSL, VDSL, cable) with a FGT is foolproof and has no drawbacks. Such as, the FGT will have trouble getting FortiGuard updates without a public WAN address...
Ede " Kernel panic: Aiee, killing interrupt handler!"