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Connecting fails from internal network behind UTM 9 to foreign UTM 9 via VPN


I have the following problem: if I try to connect from our internal network behind a UTM-9 to a foreign UTM-9 (or other firewall) via VPN, the connection fails with the following error:

Wed Apr 24 14:34:48 2019 TCP: connect to [AF_INET] failed, will try again in 5 seconds: The system tried to assign a drive with SUBST to a directory located on a drive mapped with JOIN.


Here is a small diagram of what I'm trying to achieve:


Does anyone know what settings I need to adjust?

Kind regards



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