https://app.knowbase.one/vault/rfc/docid/576
RFC0927: TACACS user identification Telnet option
Network Working Group Brian A. Anderson Request for Comments: 927 BBN December 1984 TACACS User Identification Telnet Option Status of this Memo...
https://app.knowbase.one/vault/rfc/docid/1671
RFC1492: An Access Control Protocol, Sometimes Called TACACS
Network Working Group C. Finseth Request for Comments: 1492 University of Minnesota July 1993 An Access Control Protocol, Sometimes Called TACACS Status of...