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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!spool.mu.edu!usenet.eel.ufl.edu!news.mathworks.com!EU.net!usenet2.news.uk.psi.net!uknet!usenet1.news.uk.psi.net!uknet!dispatch.news.demon.net!demon!arg1.demon.co.uk From: Andrew Gordon <andrew.gordon@net-tel.co.uk> Newsgroups: comp.unix.bsd.freebsd.misc,comp.unix.bsd.netbsd.misc,comp.unix.bsd.misc,comp.unix.questions Subject: Re: Need help with network configuration Date: Sat, 30 Nov 1996 00:24:24 +0000 Lines: 30 Message-ID: <329F7EB8.167EB0E7@net-tel.co.uk> References: <329F1D31.167EB0E7@gusw.dialup.fu-berlin.de> NNTP-Posting-Host: arg1.demon.co.uk X-NNTP-Posting-Host: arg1.demon.co.uk X-Mailer: Mozilla 3.01Gold (X11; I; FreeBSD 2.1.5-RELEASE i386) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:31758 comp.unix.bsd.netbsd.misc:4932 comp.unix.bsd.misc:1628 comp.unix.questions:92192 Gunther Schadow wrote: > I suspect that I made some mistakes using the 127 and the 0 bytes as > network addresses, since both are special. But which addresses are save > to be used in an unofficial network? From /etc/hosts on a fresh FreeBSD installation: # According to RFC 1597, you can use the following IP networks for # private nets which will never be connected to the Internet: # # 10.0.0.0 - 10.255.255.255 # 172.16.0.0 - 172.31.255.255 # 192.168.0.0 - 192.168.255.255 # > > Is ther a manual or tutorial teaching me how to set up small local > networks? > > How do I have to deal with netmasks? Ignore them for point-to-point links. For Ethernet links, choose them to show which bits select between different networks and which bits select between different machines on the same network. For example, a machine with an address of 192.168.0.1 netmask 0xfffffff0 is using bits 0-3 to select between machines and all other bits to select between networks. Hence the machines on this network are numbered 192.168.0.1 to 192.168.0.14.