Probleme mit SSL Client (ausgehend hinter UTM)

Hallo,

ich habe das Problem, dass der SSL Client hinter einer UTM keine Verbindung mehr nach extern herstellt. 

Das Protokoll gibt folgendes aus:

Thu Jan 07 10:01:24 2021 OpenVPN 2.3.8 i686-w64-mingw32 [SSL (OpenSSL)] [LZO] [IPv6] built on Oct 30 2018
Thu Jan 07 10:01:24 2021 library versions: OpenSSL 1.0.2l 25 May 2017, LZO 2.09
Enter Management Password:
Thu Jan 07 10:01:24 2021 MANAGEMENT: TCP Socket listening on [AF_INET]127.0.0.1:25341
Thu Jan 07 10:01:24 2021 Need hold release from management interface, waiting...
Thu Jan 07 10:01:25 2021 MANAGEMENT: Client connected from [AF_INET]127.0.0.1:25341
Thu Jan 07 10:01:25 2021 MANAGEMENT: CMD 'state on'
Thu Jan 07 10:01:25 2021 MANAGEMENT: CMD 'log all on'
Thu Jan 07 10:01:25 2021 MANAGEMENT: CMD 'hold off'
Thu Jan 07 10:01:25 2021 MANAGEMENT: CMD 'hold release'
Thu Jan 07 10:01:31 2021 MANAGEMENT: CMD 'username "Auth" "Michael"'
Thu Jan 07 10:01:31 2021 MANAGEMENT: CMD 'password [...]'
Thu Jan 07 10:01:32 2021 Socket Buffers: R=[65536->65536] S=[65536->65536]
Thu Jan 07 10:01:32 2021 MANAGEMENT: >STATE:1610010092,RESOLVE,,,,,,
Thu Jan 07 10:01:32 2021 Attempting to establish TCP connection with [AF_INET]62.214.246.117:442 [nonblock]
Thu Jan 07 10:01:32 2021 MANAGEMENT: >STATE:1610010092,TCP_CONNECT,,,,,,
Thu Jan 07 10:01:33 2021 TCP connection established with [AF_INET]62.214.246.117:442
Thu Jan 07 10:01:33 2021 TCPv4_CLIENT link local: [undef]
Thu Jan 07 10:01:33 2021 TCPv4_CLIENT link remote: [AF_INET]62.214.246.117:442
Thu Jan 07 10:01:33 2021 MANAGEMENT: >STATE:1610010093,WAIT,,,,,,
Thu Jan 07 10:01:33 2021 MANAGEMENT: >STATE:1610010093,AUTH,,,,,,
Thu Jan 07 10:01:33 2021 TLS: Initial packet from [AF_INET]62.214.246.117:442, sid=8115449e 3bac9f86
Thu Jan 07 10:01:33 2021 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
Thu Jan 07 10:01:52 2021 read TCPv4_CLIENT: Connection timed out (WSAETIMEDOUT) (code=10060)
Thu Jan 07 10:01:52 2021 Connection reset, restarting [-1]
Thu Jan 07 10:01:52 2021 SIGUSR1[soft,connection-reset] received, process restarting
Thu Jan 07 10:01:52 2021 MANAGEMENT: >STATE:1610010112,RECONNECTING,connection-reset,,,,,
Thu Jan 07 10:01:52 2021 Restart pause, 5 second(s)
Thu Jan 07 10:01:53 2021 SIGTERM[hard,init_instance] received, process exiting
Thu Jan 07 10:01:53 2021 MANAGEMENT: >STATE:1610010113,EXITING,init_instance,,,,,

Auf der UTM (9.705-3) wird, lt. Protokoll, nichts geblockt. Wenn ich das Laptop über einen Hotspot betreibe funktioniert die Verbindung sofort. 

Woran könnte dies liegen ?

Danke. 

Gruß

Michael