socks5 What is the difference between socks4 proxy and socks5 proxy?

[+ xiaobo]

Authentication mechanism: SOCKS4 only supports TCP protocol while SOCKS5 supports TCP/UDP protocol,

supports various authentication mechanisms, server-side domain name resolution, etc.

Although SOCKS4A also supports TCP/IP, it only supports username/password authentication.
Network protocol: SOCKS4 proxy only supports IPv4 protocol,

while SOCKS5 proxy supports both IPv4 and IPv6 protocols.

link:http://www.piaproxy.com/?utm-source=crackia&utm-keyword=?C01