From owner-freebsd-net@FreeBSD.ORG Wed Aug 6 08:25:07 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 94AC837B401 for ; Wed, 6 Aug 2003 08:25:07 -0700 (PDT) Received: from lariat.org (lariat.org [63.229.157.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id AEF3343FB1 for ; Wed, 6 Aug 2003 08:25:06 -0700 (PDT) (envelope-from brett@lariat.org) Received: (from root@localhost) by lariat.org (8.9.3/8.9.3) id JAA07305 for net@freebsd.org; Wed, 6 Aug 2003 09:25:04 -0600 (MDT) Date: Wed, 6 Aug 2003 09:25:04 -0600 (MDT) From: Brett Glass Message-Id: <200308061525.JAA07305@lariat.org> To: net@freebsd.org Subject: Port mapping services X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Aug 2003 15:25:07 -0000 I'm doing some research on port mapping services -- services that map protocol and program names to IP port numbers -- and have come up with a question I'm having trouble answering. What is the difference between the "portmap" service (generally offered on TCP port 111) and the "loc-srv" (or "epmap") service that many machines seem to offer on TCP port 135? Are they merely the same service offered on different ports? Is the service offered on port 135 an enhanced or proprietary version of the one offered on 111? --Brett Glass