Historical Overview

• Born as a tiny proxy for Gopher (March 1994)

• Extended continuously

  • Coped with various protocols:
    -- Telnet,HTTP,FTP,NNTP,POP,SMTP,X,DNS,ICP,SSL,...

  • Ported onto various platforms:
    -- over 15 Unix variants, Windows and OS/2

  • Utilized for various purposes by various users:
    -- firewall, cache, routing, protocol gateway, ...

  • Applied for various Value-added services:
    -- conversion, translation, compression, encryption, ...

• Distributed over the world (6,800 sites in 82 countries)