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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!news.wildstar.net!cancer.vividnet.com!hunter.premier.net!news1.erols.com!howland.erols.net!newsfeed.internetmci.com!in1.uu.net!news.gtn.com!klemm.gtn.com!usenet From: andreas@klemm.gtn.com (Andreas Klemm) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Port definitions Date: 22 Sep 1996 13:03:46 GMT Organization: FreeBSD makes fun Lines: 26 Message-ID: <523dfi$kjq@klemm.gtn.com> References: <51vl49$nfh@juliana.sprynet.com> NNTP-Posting-Host: klemm.gtn.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Newsreader: knews 0.9.8 In article <51vl49$nfh@juliana.sprynet.com>, change@sprynet.com writes: > I am a new computer junkie, who cannot find the answer to this > question. What are ports exactly? Port 21 is the FTP port on a TCP/IP > network, and I have heard the term "ported software" but I do not > understand it. Does anyone know of a resource for this information, or > can anyone recommend a journal or textbook on the subject (and others, > of course). Porting Unix public domain software means to make existing free software run on another flavour of Unix. TCP IP has different "channels", such channel are as well references as port numbers. It's needed to distinguish network packets. "Give all ftp related stuff the program that handles ftp sessions", "Give all telnet related stuff the program that handles telnet sessions", ... So the port number of a single network packet marks it for a special service. Go and get some O'reilly books on that topic ;-)) -- andreas@klemm.gtn.com /\/\___ Wiechers & Partner Datentechnik GmbH Andreas Klemm ___/\/\/ Support Unix -- andreas.klemm@wup.de pgp p-key http://www-swiss.ai.mit.edu/~bal/pks-toplev.html >>> powered by <<< ftp://sunsite.unc.edu/pub/Linux/system/Printing/aps-491.tgz >>> FreeBSD <<<