We have a strange situation at one of our customers.
There is a C2S connection on a BM3.9 server. There are 2 PC running XP in the remote location. This setup runs properly since 2-3 years.
Yesterday a new PC, Windows 7 ()32bit) was installed in the remote office. Tried to do VPN connection with VPN client 3.9.2 from the Windows & machine, but we got error (Failed to get DH public value). But after this the old XP machines were also unable to connect.

After a server restart the windows XP machines are able to login again.

1)Is there any kind of defense mechanism in the BM server? So could it block the whole IP address of the remote office, after the new machine tried to connect?
2)Anyone else have issues with Windows7?