rfc 123 exchange network working group comments connection initial connection protocol message ncp

client-server networking telnet standards sockets protocols icp data transfer initial connection protocol ncp

networking standards debugging measurement interoperability echo process initial connection protocol data transmission network protocols network connections

network working group debugging discard process measurement initial connection protocol

network working group rjep file transfer protocol network graphics protocol unified user level protocol telnet protocol network generic function telnet control code initial connection protocol quality of service

host-host protocol network working group message data type initial connection protocol rfc updates