GlobalProtect uses both OpenSSL and native system APIs
to perform SSL handshakes. Operations such as the GlobalProtect
gateway latency measurement (used by GlobalProtect to select the
best gateway), gateway logout, and HIP check message and report
transmission are performed over SSL sessions that are set up using
OpenSSL library. Operations such as gateway pre-login, login, and
get-config are performed over SSL sessions that are set up using
the native system API.