My client has an ASA 5505 firewall using the classic VPN client software. Cisco are dropping support for this client so we want to move to Anyconnect Essentials client software and we will upgrade the ASA to the latest versions of the OS (asa914-k8.bin) and ASDM (asdm-715-100.bin).
We would like to enforce a key length of 256 bits AES and 2048 RSA and the ASA should drop connection requests not meeting these standards. Is it possible to enforce this using the software mentioned?
My understanding of encryption is not the best.