L2PT VPN maximum concurrent connections limit?
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We have recently had everyone start working from home, but we are having issues with people connecting to the L2TP VPN intermittently, which has always worked without issue in the past. I've looked over all the documentation I can find and cannot see anything configured incorrectly. So, is there a limit to the number of concurrent connections allowed to an L2TP VPN on pfSense?
We are using a Netgate SG-3100 and have 28 users configured and some of these need to connect 2 or 3 devices.
If there is a limit, is there a way to increase it?
Thanks.
Andrew.
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I'm not aware of any limits there but you might check the size of your remote address range. If the mask there is for a smaller network, change it to a larger network, as long as it doesn't overlap. Most people set VPN networks up as a /24 which should be good for ~250 clients but it depends on the VPN type and settings how many can actually connect.
There is some more general advice here: https://docs.netgate.com/pfsense/en/latest/vpn/scaling.html
Nothing on the page about L2TP since it's not a recommended configuration, but some of the general info still applies.
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If I recall correctly it is a protocol limitation to connect from one location multiple times.
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That is a limitation of transport IPsec (Used by L2TP/IPsec), no two from the same site could connect in at the same time. But that wouldn't limit the total maximum number of users connected.
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@andrewmso said in L2PT VPN maximum concurrent connections limit?:
have 28 users configured and some of these need to connect 2 or 3 devices
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Right, but that part of the behavior wouldn't have changed in most cases -- it never would have worked.
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Thanks, I will look into setting up OpenVPN instead.
