I use IPCop v1.9.14 and I have 2 VPN IPSec.
The VPN were OK, but I changed a settings and all went wrong.
I just changed the Grouptype ESP from "Phase 1 Group" to "MODP-1014", saved the settings and restarted the VPN and I got an error : "packet from xxx.xxx.xxx.xxx:500: initial Main Mode message received onyyy.yyy.yyy.yyy :500 but no connection has been authorized with policy=PSK"
So I restarted the IPCop Box and it was worst. Both of my IPSec VPN were down and the error was : "can not load config '/etc/ipsec.conf': /etc/ipsec.conf:46: syntax error, unexpected STRING [pfsgroup]"
So I switch the Grouptype ESP to "Phase 1 Group" and the IPSec WPN were OK.
So I think there is a bug in the IPSec VPN and the "Grouptype ESP" settings ...