Was ich komisch finde ist das in der FritzBox folgendes steht:
Adresse im Internet 255.255.255.255
Die Conifg dazu:
/* * C:\Users\cw\AppData\Roaming\AVM\FRITZ!Fernzugang\berlin_selfip_biz\fritzbox_berlin_selfip_biz.cfg * Fri Jan 04 10:40:54 2013 */ vpncfg { connections { enabled = yes; conn_type = conntype_lan; name = "remote.treesoft.ag"; always_renew = no; reject_not_encrypted = no; dont_filter_netbios = yes; localip = 0.0.0.0; local_virtualip = 0.0.0.0; remoteip = 0.0.0.0; remote_virtualip = 0.0.0.0; remotehostname = "drytek dns"; localid { fqdn = "fristzbox dns"; } remoteid { fqdn = "drytek dns"; } mode = phase1_mode_aggressive; phase1ss = "all/all/all"; keytype = connkeytype_pre_shared; key = "5ea3cb$e28e4ac#ia88cfb4pf8e69196{"; cert_do_server_auth = no; use_nat_t = yes; use_xauth = no; use_cfgmode = no; phase2localid { ipnet { ipaddr = 192.168.178.0; mask = 255.255.255.0; } } phase2remoteid { ipnet { ipaddr = 192.168.0.0; mask = 255.255.255.0; } } phase2ss = "esp-all-all/ah-none/comp-all/pfs"; accesslist = "permit ip any 192.168.0.0 255.255.255.0"; } ike_forward_rules = "udp 0.0.0.0:500 0.0.0.0:500", "udp 0.0.0.0:4500 0.0.0.0:4500"; } // EOF