Hab etwas gegoogelt, und da stand dann drin, dass man mal versuchen soll, über Ipsec over UDP reinzukommen, da kommt dann derselbe fehler nur mit Reason 412 (naja, wenigstens mal Abwechslung. ..), "the remote peer is no longer responding".
[Log-Auszug:]
79 16:21:18.234 04/26/06 Sev=Info/6 IKE/0x6300003B
Attempting to establish a connection with 141.78.127.210.
80 16:21:18.281 04/26/06 Sev=Info/4 IKE/0x63000013
SENDING >>> ISAKMP OAK AG (SA, KE, NON, ID, VID(Xauth), VID(dpd), VID(Nat-T), VID(Frag), VID(Unity)) to 141.78.127.210
81 16:21:18.437 04/26/06 Sev=Info/4 IPSEC/0x63700008
IPSec driver successfully started
82 16:21:18.437 04/26/06 Sev=Info/4 IPSEC/0x63700014
Deleted all keys
83 16:21:18.437 04/26/06 Sev=Info/6 IPSEC/0x6370002A
PPPoE Protocol has been detected.
84 16:21:23.421 04/26/06 Sev=Info/4 IKE/0x63000021
Retransmitting last packet!
85 16:21:23.421 04/26/06 Sev=Info/4 IKE/0x63000013
SENDING >>> ISAKMP OAK AG (Retransmission) to 141.78.127.210
86 16:21:28.421 04/26/06 Sev=Info/4 IKE/0x63000021
Retransmitting last packet!
87 16:21:28.421 04/26/06 Sev=Info/4 IKE/0x63000013
SENDING >>> ISAKMP OAK AG (Retransmission) to 141.78.127.210
88 16:21:33.421 04/26/06 Sev=Info/4 IKE/0x63000021
Retransmitting last packet!
89 16:21:33.421 04/26/06 Sev=Info/4 IKE/0x63000013
SENDING >>> ISAKMP OAK AG (Retransmission) to 141.78.127.210
90 16:21:38.421 04/26/06 Sev=Info/4 IKE/0x63000017
Marking IKE SA for deletion (I_Cookie=B3770B0661330391 R_Cookie=0000000000000000) reason = DEL_REASON_PEER_NOT_RESPONDING
91 16:21:38.921 04/26/06 Sev=Info/4 IKE/0x6300004A
Discarding IKE SA negotiation (I_Cookie=B3770B0661330391 R_Cookie=0000000000000000) reason = DEL_REASON_PEER_NOT_RESPONDING
92 16:21:39.015 04/26/06 Sev=Info/4 IKE/0x63000001
IKE received signal to terminate VPN connection
93 16:21:39.062 04/26/06 Sev=Info/4 IKE/0x63000085
Microsoft IPSec Policy Agent service started successfully
94 16:21:39.078 04/26/06 Sev=Info/4 IPSEC/0x63700014
Deleted all keys
95 16:21:39.078 04/26/06 Sev=Info/4 IPSEC/0x63700014
Deleted all keys
96 16:21:39.078 04/26/06 Sev=Info/4 IPSEC/0x63700014
Deleted all keys
97 16:21:39.078 04/26/06 Sev=Info/4 IPSEC/0x6370000A
IPSec driver successfully stopped
Bin echt überfragt, hab zur Sicherheit das Service Pack 2 nochmal installiert, hat aber nix an der Situation geändert. Wär schön wenn mir jemand von euch helfen könnte! Danke im Voraus!
Homer-Jay!