Search Again: Re: DNS and DHCP From: Len Conrad Date: Wednesday, February 6, 2002 Time: 4:21:08 pm >I'd >like to set up a DNS server for the internal network (BIND on an OS X machine) ok, the DNS box of course should have a fixed ip, as should all the servers. DHCP is for managing desktop ip space, not servers. >so that we can refer to the various hosts by name. This is more for my own >enlightenment and amusement than as a necessity. With the help of DNS & BIND, >I'm sure that I can get an internal name server going without too much >problem we here could probably help :)) >, but there is one thing I'm not sure about. Since the internal >addresses assigned via DHCP are, well, dynamic, and since computers >occasionally leave and re-join the network (a.k.a. the iBook goes for a >ride...) and/or get rebooted, etc., the internal addresses get shuffled >around occasionally. hmm, you can give "infinite" leases that never expire (as someone else mentioned ip-mapped-to-MAC), which is how an ADSL provider in France gave us a "fixed" ip on our ADSL line (we needed fixed ip at our remote admin office so we could apply ip-based ACL's at our tech center) >The machine at 10.0.1.2 today may or may not be the same machine >at that address tomorrow. As far as I can find from the meager Airport docs >there are no configuration options for its DHCP server other than 'on' and >'off,' so there's not a way to get the Airport always assign the same >address to a given machine. Is there a workable strategy to deal with this >so that a >given host name in the internal DNS always resolves to the same machine, even >if that machine's IP address may change occasionally? Can it be done with >BIND sure, but the DHCP server needs to know how to send updates to the BIND server. I'm guessing your little router doesn't support DDNS?? (OT: and afaik, only w2k and xp workstation know how to do updates (or futz around with SRV records). >, or would I need to find some other name server that can do dynamic DNS? stop the DHCP of the router, and run the ISC.org DHCP server on *nix. :)) Like with BIND and its RFC's, their DHCP server is meant to the "reference" implementation of all the DHCP-related RFC's. (you'll be amazed at how much diverse info a full-blown DHCP server can pass out vs. MS's handful of info) On BIND, all you have to do for your private zone is to make is a dynamic zone with the allow-update { match_list | acl | key ;}; ... substatement in its zone statement. see: http://www.isc.org/products/BIND/docs/config/zone.html Since this "enlightenment and amusement" time, don't run ip-based update ACL but run TSIG. :)) Len ___________________________________________________________________ Men & Mice: QuickDNS - DNS Expert - DNS Training - DNS Consulting DNS Classes: Maidenhead, 01/21-23/02, Frankfurt 02/13-14/02 http://www.menandmice.com/8000/8100_course_schedule.html

Messages In This Thread: DNS and DHCP by Alan Ordway on Oct 8, 2001 at 8:56:30 am Re: DNS and DHCP by Frank Laszlo on Oct 8, 2001 at 9:14:28 am Re: DNS and DHCP by Men & Mice Support on Oct 8, 2001 at 10:30:14 am Re: DNS and DHCP by Len Conrad on Oct 8, 2001 at 11:39:24 am DNS and DHCP by Global Homes Webmaster on Feb 6, 2002 at 11:39:13 am Re: DNS and DHCP by Steffan A. Cline on Feb 6, 2002 at 12:08:02 pm Re: DNS and DHCP by Global Homes Webmaster on Feb 6, 2002 at 12:38:29 pm Re: DNS and DHCP by Warren Michelsen on Feb 6, 2002 at 3:34:01 pm Re: DNS and DHCP by Global Homes Webmaster on Feb 6, 2002 at 3:41:26 pm Re: DNS and DHCP by Men & Mice Support on Feb 6, 2002 at 3:49:45 pm Re: DNS and DHCP by Global Homes Webmaster on Feb 6, 2002 at 4:04:25 pm Re: DNS and DHCP by Len Conrad on Feb 6, 2002 at 4:21:08 pm Re: DNS and DHCP by Global Homes Webmaster on Feb 7, 2002 at 9:58:09 am