SoftEther VPN User Forum

Hello!
I've installed SoftEther as L2TP/IPSec only server and it works perfectly.
But I'd like to prevent someone from access to administration of my server with VPN Server Manager.
Now it is secured only with password and as for me it looks weak. I've tried to close Listeners by firewall or disable (stop) them at all, but it doesn't help. Server Manager creates some kind of ICMP/DNS/UDP connection to server and works anyway.
(BTW, why do we need the Listeners if it can work without TCP)

Is there a way to disable remote administration at all? Or how to filter it?
Thank you!

Turn off unnecessary functions (openvpn, VPN over icmp/dns, remove unneeded ports) Maybe it will help. Or use password like "8tmpx)fumcjxw90fi)(M(hf hfeyf7n CGMFNh (F&gEN^ V*GCNSHf8nsyhgryhtgr89ytf"

Everything is disabled, except L2TP/IPSec. Looks like author created a way to prevent the users from a
"shoot in the foot" and disable admin access.
I do not think the password could be brut-forced, there are other ways to get it.

Use adminip.txt.
http://www.softether.org/4-docs/1-manua ... Source_IPs