We are using ASA 5510 boxes in active/standby-stateful to serve internet connectivity to about 2500-3000 users, the normal CPU usage of the ASA is about 15-18%.
Now we are planning to set up Cut-through -proxy for all users with Cisco ACS (v 4.0, Server hardware: Intel XEON, 2 GB RAM). Also we require that all http sessions be Accounted in the ACS.
I read there are issues with the ASA authenticating more that 16 users simultaneously using https authentication.
Are there any such kind of issues with http authentication?
What will be the impact on the ASA CPU authenticating all these users and sending accounting information to the ACS about all the sessions.