With SSL VPN in UTM, you will be disconnected, NO MATTER WHAT, efter 8 hours, this is default. Even if your are transfering data you will be kicked off 🙂
This can be changed, by modifying this parameter in UTM:

Here changed to 10 hours = 36000secs:

After that, press APPLY and all new connections will timeout after 10hours now 🙂



