The Role & Scope of the IETF “above the wire and below the application” IP, TCP, email, routing, IPsec, HTTP, FTP, ssh, LDAP, SIP, mobile IP, ppp, RADIUS, Kerberos, secure email, streaming video & audio, ... but wires are getting fuzzy MPLS, GMPLS, pwe3, VPN, ... generally hard to clearly define IETF scope constant exploration of edges |