I’m working on implementing a Simultaneous-Use check using the rediswho module in the FreeRADIUS 3.2 branch. The approach is inspired by the blog post “Preventing Fraudulent Logins with a Session Database” (which unfortunately appears to be offline). At this stage, I’m successfully writing accounting records into Redis through rediswho. However, I haven’t found any documentation or examples describing how to query Redis for Simultaneous-Use checking and verification — specifically, the equivalent of the simul_count_query and simul_verify_query mechanisms used in the SQL module If anyone has implemented this or can provide guidance on best practices for performing Simultaneous-Use checks with rediswho, I would appreciate any insights or references. Additionally, I noticed that the default rediswho configuration in both versions 3.2 and 4.0 uses the same insert operation for all Acct-Status-Type values. As a result, when querying the Redis, it’s not possible to distinguish between sessions that have terminated with an Acct-Status-Type = Stop and those that are still active. Nitzan