Symptom
SFTunnel will not establish between FTD & FMC after FTD is upgraded from 7.2.5 to 7.2.5.1.
Conditions
FMCv 7.2.5.1
FTDv 7.2.5 upgraded to 7.2.5.1
Workaround
In the SFTunnel configuration file on the FTD: /etc/sf/sftunnel.conf
Changed TLS line from: proxy_tls_version TLSv1.3;
to: proxy_tls_version TLSv1.2;
Restarted sftunnel and the connection was successfully established.
Further Problem Description
