dtp remote job entry file transfer protocols handshake error control transaction types data transfer network mail

networking protocols handshake routing is-is

standards supplemental data security authorization protocols handshake tls authentication

client-server ssl security protocols handshake encryption key-management tls authentication

client-server ietf protocols handshake data frames tcp standards track websocket two-way communication security model

security x25519 ecdsa certificates cryptography handshake tls private keys key exchange authentication