I like using nmap with the enum-ciphers script.
https://nmap.org/nsedoc/scripts/ssl-enum-ciphers.html
Most likely your old version only has TLS 1.0 (if that). The IPS are almost end of life.
The later software versions for them did introduce TLS 1.2 support but there was a cli work around you had to do to disable TLS 1.0 and 1.1. It was documented in a bugID work around but I can't find it at the moment.
