The Bradmark Surveillance web client is typically hosted on the Central Alerter Server (CAS), in an enterprise environment, or on the server being monitored.
The default web client port number is 12410. So, for example, you would access the URL:
http://mycas.example.com:12410
If Bradmark Surveillance is running on a custom port (i.e. 12900), then the web client will be available on that port + 7 (i.e. 12907).
The web client is available via TLS (HTTPS), which encrypts communication. By default, going to the HTTP URL will automatically redirect you to the HTTPS URL.