erstmal vorweg: Ich habe die Suche benutzt, aber mit keinem bisherigen Thread konnte ich mein Problem lösen

ich hoffe ich bekomme eure Hilfe auch, wenn ich hier absolut neu bin

Ich versuche hier eine VPN-Verbindung über einen LANCOM 3550 Wireless Router zu einem Clavister SS51G aufzubauen.
Habe den Setup Assistenten benutzt, um die VPN Verbindung einzurichten. Leider bekomme ich jetzt immer folgende Fehlermeldung:
Zeitüberschreitung während IKE- oder IPsec-Verhandlung [0x1106]
Das gibt mir Telnet aus:
[VPN-Status] 1900/01/01 01:09:39,300
VPN: connecting to BENNINGEN (213.182.3.164)
[VPN-Status] 1900/01/01 01:09:39,300
VPN: installing ruleset for BENNINGEN (213.182.3.164)
[VPN-Status] 1900/01/01 01:09:39,330
VPN: ruleset installed for BENNINGEN (213.182.3.164)
[VPN-Status] 1900/01/01 01:09:39,330
VPN: start IKE negotiation for BENNINGEN (213.182.3.164)
[VPN-Status] 1900/01/01 01:09:39,360
VPN: rulesets installed
[VPN-Packet] 1900/01/01 01:09:39,360
for send: 172.23.56.1->172.16.1.11 84 ICMP ECHOREQUEST
[VPN-Packet] 1900/01/01 01:09:39,360
no sa available: give up, should be retransmitted
[VPN-Status] 1900/01/01 01:09:39,370
IKE info: Phase-1 negotiation started for peer BENNINGEN rule isakmp-peer-BENNIN
GEN using MAIN mode
[VPN-Packet] 1900/01/01 01:09:40,330
for send: 172.23.56.1->172.16.1.11 84 ICMP ECHOREQUEST
[VPN-Packet] 1900/01/01 01:09:40,330
no sa available: give up, should be retransmitted
[VPN-Status] 1900/01/01 01:09:40,850
IKE info: The remote server 213.182.3.164:500 peer BENNINGEN id <no_id> negotiat
ed rfc-3706-dead-peer-detection
[VPN-Status] 1900/01/01 01:09:40,850
IKE info: Phase-1 remote proposal 1 for peer BENNINGEN matched with local propos
al 1
[VPN-Packet] 1900/01/01 01:09:41,330
for send: 172.23.56.1->172.16.1.11 84 ICMP ECHOREQUEST
[VPN-Packet] 1900/01/01 01:09:41,330
no sa available: give up, should be retransmitted
[VPN-Status] 1900/01/01 01:09:41,710
IKE info: unexpected cleartext message received from peer unknown and dropped in
phase-2
[VPN-Status] 1900/01/01 01:09:41,710
IKE log: 010941 Default dropped message from 213.182.3.164 port 500 due to notif
ication type INVALID_FLAGS
[VPN-Status] 1900/01/01 01:09:41,710
IKE info: dropped message from peer unknown 213.182.3.164 port 500 due to notifi
cation type INVALID_FLAGS
[VPN-Packet] 1900/01/01 01:09:42,330
for send: 172.23.56.1->172.16.1.11 84 ICMP ECHOREQUEST
[VPN-Packet] 1900/01/01 01:09:42,330
no sa available: give up, should be retransmitted
[VPN-Packet] 1900/01/01 01:09:43,330
for send: 172.23.56.1->172.16.1.11 84 ICMP ECHOREQUEST
[VPN-Packet] 1900/01/01 01:09:43,330
no sa available: give up, should be retransmitted
[VPN-Packet] 1900/01/01 01:09:44,330
for send: 172.23.56.1->172.16.1.11 84 ICMP ECHOREQUEST
[VPN-Packet] 1900/01/01 01:09:44,330
no sa available: give up, should be retransmitted
Kann da jemand was mit anfangen?
MFG