(1) OpenBSD $ uname -a OpenBSD ultra5.localdomain 5.7 GENERIC#466 sparc64 $ cat ~/.lftprc set xfer:clobber true set ftp:ssl-auth TLS set ftp:ssl-force on set ssl:verify-certificate no $ lftp -d -u ag221-1 ftp.ncf.ca ---> AUTH TLS <--- 234 AUTH TLS OK. WARNING: Certificate verification: self signed certificate in certificate chain Certificate verification: subjectAltName: ‘ftp.ncf.ca’ matched <--- 150 Accepted data connection ============================== (2) Linux - Nyx nyx2:~> uname -a Linux nyx2.nyx.net 3.16.0-28-generic #38-Ubuntu SMP Fri Dec 12 17:37:40 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux nyx2:~> cat .lftprc set ftp:ssl-auth TLS set ftp:ssl-force on set ssl:verify-certificate no set xfer:clobber true $ lftp -d -u ag221-1 ftp.ncf.ca ---> AUTH TLS <--- 234 AUTH TLS OK. WARNING: Certificate verification: Not trusted: no issuer was found <--- 150 Accepted data connection ============================== (3) OpenSolaris @hipster:~$ uname -a SunOS hipster 5.11 illumos-81ad62f i86pc i386 i86pc Solaris @hipster:~$ lftp -d -u ag221-1 ftp.ncf.ca ---> AUTH TLS <--- 234 AUTH TLS OK. ---- Data connection established ---> LIST Certificate verification: subjectAltName: ‘ftp.ncf.ca’ matched <--- 150 Accepted data connection ============================== (4) NetBSD - SDF $ uname -a NetBSD faeroes 6.1_STABLE NetBSD 6.1_STABLE (SDF6.amd64) #0: Sun Dec 21 18:11:22 UTC 2014 root@bjork:/spare/netbsd/usr/src/sys/arch/amd64/compile/SDF6.amd64 amd64 $ which lftp $