Editing Label Distribution Protocol (section)

===Authentication===

LDP sessions carried over TCP can be authenticated using the ''TCP MD5 Authentication Option''.  While the IETF considers the ''TCP MD5 Authentication Option'' deprecated in favor of the algorithm-independent ''TCP Authentication Option'', in practice the ''TCP MD5 Authentication Option'' is much more widely available in commercial routers as of July 2023.  Use of authenticated LDP-over-TCP helps provide strong integrity protection against misconfigured would-be LDP peers.{{cn|date=July 2023}}