News Group Posts

h2n for DNS

From: Brent Bolin <brent@dspi.com>
Newsgroups: comp.unix.sco.misc
Subject: Re: SCO DNS
Date: Wed, 10 Nov 1999 14:14:46 -0600
Message-ID: <3829D236.210E2739@dspi.com> 
References: <80cdct$7og$1@spk-news1.nwnexus.com> 

There are a number of DNS utilities to make life easy.  I like to use a perl
script named "h2n".  It builds the whole deal including multiple name spaces if
you like.  Also secoundary setups.

It works on a single configuration file.  I call it h2n.conf.

Syntax of the file:

-s server_name    (DNS server name)
-d domain_name  (Domain name)
-n network           (Network 1)
-n network           (Network 2)
-n network           (Network 3)
-y                         (Create serial number)
-M                       (Don't create MX record, there a better ways to deal
with this)

I would suggest NOT using the /etc/hosts file for DNS.  It is  not cached nor do
I think "nslookup" works with it.

Don't use it.

SCO has an option used in /etc/resolv.conf that allows search sequences i.e.
/etc/hosts bind nis.  Similiar to Solaris nsswitch or BSD /etc/hosts.conf

The h2n perl scipt uses the /etc/hosts file for data by default.
Don't forget to setup /etc/resolv.conf

The h2n script creates all its data in the directory it was executed.  I would
suggest A symbolic link of the named.boot file

ln -s /etc/named.d/named.boot /etc/named.boot

This h2n scripts works fine for OSR5.0.5 also(bind 8).

Search the net for the script.  I won't post to the newsgroup but if you can't
find it I will forward it.

Tom Fuchs wrote:

> I have a SCO 5.0.0 Unix Server on an NT network.  I am trying to configure
> DNS on the SCO box.  All addresses on my internal network have the same
> subnetmask.  I have one router that acts as the gateway between my internal
> network and the internet.  I would like to configure DNS on the SCO box to:
> 1) Resolve names on the local network via the /etc/hosts file.
> 2) Direct names that cannot be resolved out through my gateway.
> Can someone tell me what I need to do?  I have tried configuring DNS several
> times and each time I have 1) either not been able to ping hosts on my local
> network or 2) I have not been able to resolve names that are not on my local
> network.  I get 1 when I don't use resolv.conf, and I get 2) when I do use
> it.

4 comments

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Tue May 10 00:11:11 2005:   dwm


It would be really helpful if the download site for the variant of h2n you reference were documented. I have found many different programs sharing the same name. This is the only description I've found which implies that multiple domains can be generated from the same /etc/hosts file. Since that is the core of what I need ....



Tue May 10 09:48:22 2005:   TonyLawrence


A google for "h2n perl" turns it up in numerous places.





Wed May 11 16:25:45 2005:   dwm


The problem is that different variants turn up in many places. There is also documentation which seems to have features which don't match the h2n variations I've located.

In any case, I've written the code to do exactly what I need so I don't care except to point out the importance of complete documents if they are to be helpful.



Wed May 11 18:45:57 2005:   TonyLawrence


... there are different versions, so you choose what you want..

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