Typical interfaces....

[Bas ON5HB]

In case you are looking for the different interfaces:

Standard port = Uber own interface, mine Heppen is set to port 80
Kiwi port = 8073
Websdr.org port = 8901
Hermes P2 port = 1234

So example:

https://websdr.heppen.be

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http://websdr.heppen.be:8901

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http://websdr.heppen.be:8073

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For port 1234 you need xxxHPSDR software, but I do not know how many users at the same time.