How many concurrent user could be connected via captive portal?

[mhbdr]

is there any limitation for concurrent users of captive portal?

[Gertjan]

When you create a captive portal instance, you'll find this setting:

Maximum concurrent connections [    ] per client IP address (0 = no limit)
This setting limits the number of concurrent connections to the captive portal HTTP(S) server. This does not set how many users can be logged in to the captive portal, but rather how many users can load the portal page or authenticate at the same time! Possible setting allowed is: minimum 4 connections per client IP address, with a total maximum of 100 connections.

So, the answer might be: its up to you.

Btw: examples on this forum show tens of thousands of user simultaneously connected to a portal.
If you have the hardware that follows the load ;)

[uaxero]

in this moment we have connected 11596 users , not all this users is online simultaneously.