Only 2 VPN connections from one renote ip address via IPsec and L2TP possible?

[Guest]

[Hannes W.]

Hello,

we have the endian utm virtual 3.0 running.
Road warriors can call in via VPN with IPsec and L2TP authenticating against LDAP/AD. This works pretty fine so far.
Except only 2 connections from one remote ip address are possible.
E.g. there are 3 colleagues in a hotel. The first 2 of them can establish a VPN connection to the endian.
Third colleague won´t have a chance of establishing a VPN connection until one of the first 2 colleagues disconnects.
Any hints?

Second thing is, we can see Usernames in Status -> VPN connections, but no Assigned IPs oder Remote IPs.
But this isn´t a big problem...

Kind regards!
Hannes

[dda]

Is Endian managing the authentication?  Or is it being forwarded to a windows server?

[Hannes W.]

Authentication is synchronized with LDAP / Active Directory.
But I think I tried with local users and the problem was the same.

[Hannes W.]

Interesting thing:
Only Windows clients are affected. That Apple devices don´t care, they always can connect to the endian utm via VPN.

Forgot to mention: We already tested with two different routers.

Nobody else experiencing a similar behaviour?