There is no difference. SSL was invented by Netscape, when they brought it to IETF to get standardized Microsoft did not want to use a name Netscape has adverti

There is no difference. SSL was invented by Netscape, when they brought it to IETF to get standardized Microsoft did not want to use a name Netscape has advertised, so they forced a name change. Thus "SSL 3.1" (IETF update to SSL 3) was called "TLS 1.0". This was in 1999. TLS 1.1 uses version encoded in two bytes that should mean "SSL 3.2", TLS 1.2 uses bytes that should mean "SSL 3.3". TLS 1.3 pretends to be TLS 1.2 to pass through proxies but internally uses two bytes that should mean SSL 3.4 to indicate its version.