Nagios check_ftp plugin alternative supporting TLSv1.2 and explicit/implicit TLS mode. Not implemented full feature, only we need.
Usage:
check_ftp2 [OPTIONS]
Application Options:
--timeout= Timeout to wait for connection (default: 10s)
-H, --hostname= IP address or Host name (default: 127.0.0.1)
-p, --port= Port number (default: 21)
-S, --ssl use TLS
--sni= specify hostname for SNI
--explicit Use Explicit TLS mode
-4 use tcp4 only
-6 use tcp6 only
--verify-ssl Verify SSL certificate, --sni must be specified
-v, --version Show version
Help Options:
-h, --help Show this help message