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Top Forums UNIX for Advanced & Expert Users [DNS] Reverse Lookup for 2 IP Addresses Post 302232962 by BOFH on Friday 5th of September 2008 04:17:26 PM
Old 09-05-2008
[DNS] Reverse Lookup for 2 IP Addresses

Originally I had the server at home and on Comcast so I used dyndns.org for DNS.

Once the server got a bit more popular, I leased a server at a colo facility. They set up the server name in their DNS so I didn't really have any reason to manage my own DNS. DynDNS was managing the domains and I had a reverse lookup for the server so mail was being delivered.

Recently I upgraded server to a more powerful server and this time they didn't add the server to their DNS. When I asked them about it, they offered to manage my DNS for me for a few bucks per domain or they'd delegate it to me.

I checked DynDNS and they'll manage the reverse lookup but it's a few extra bucks. May as well have the ISP manage it as it's a few bucks less if I go that way.

But I've administered bind in the past for entire address ranges so rather than pay someone else to manage it, I'd rather do it myself. Both to save a few bucks but also to keep my fingers in DNS management.

So I got my domain files set up without a problem but I'm not sure how to set up a reverse lookup file for a single or two addresses. I want to make sure it's right before I flip the switch so I thought I'd drop a quick note here and see what sort of response I get Smilie

Code:
# cat 172.111.65.in-addr.arpa
$ORIGIN .
$TTL 86400      ; 1 day
172.111.65.IN-ADDR.ARPA IN      SOA ns1.youreadumbass.org. hostmaster.schelin.org. (
                                1               ; serial
                                10800           ; refresh (3 hours)
                                3600            ; retry (1 hour)
                                604800          ; expire (1 week)
                                3600            ; minimum (1 hour)
                                )
                IN      NS      ns1.youreadumbass.org.

$ORIGIN 172.111.65.IN-ADDR.ARPA.
167             IN      PTR     youreadumbass.org.
168             IN      PTR     youreadumbass.org.

Ultimately I believe I'd have the same two PTR records for each of the domains. And I'll contact the ISP to delegate the two IP's to my control with them as my secondary or maybe DynDNS.

So, opinions? Suggestions? Go read the Cricket book? Smilie

Thanks.

Carl
 

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desproxy-dns(1) 						   User Commands						   desproxy-dns(1)

NAME
desproxy-dns - DNS for dynamic connections SYNOPSIS
desproxy-dns dns_server proxy_host proxy_port OPTIONS
None DESCRIPTION
If you have direct DNS access then you don't need to do anything else. You know you have direct DNS access if you can resolve host names to IP addresses. NOTE: as desproxy-dns listens in port 53 (which is less than 1024) you may need administrator privileges to exec desproxy-dns (in fact if you are running UN*X, you actually have to run desproxy-dns as root). OK, so you have a dns server accessible now. But your computer doesn't know anything about that. You must configure your network accordingly (again, need to be root in UN*X). Edit /etc/resolv.conf and add the line "nameserver 127.0.0.1". You don't have to restart anything. Just test ping and see if it works. ENVIRONMENT
None. FILES
None. SEE ALSO
dnsproxy(1), ping(1) AUTHORS
This manual page was written by Jari Aalto <jari.aalto@cante.net>, for the Debian GNU system (but may be used by others). Released under license GPL v2 or any later version. desproxy-dns 2012-03-26 desproxy-dns(1)
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