Re: DHCP and HOST files

[Rick Stevens <rstevens vitalstream com>]

Mugleston, Brad wrote:
> Thanks Rick, my question is more to my home network which now has everyone
> on DHCP.  Should I just get rid of the HOSTS-DOT files or do they still
> function with everyone on the network using DHCP.  
>
> Again just a question for knowledge, not a problem.

Well, if you're trying to limit access from other machines on the DHCP'd
network, be aware that the addresses from those systems might change if
they get a new DHCP lease.  If you're trying to protect the system from
access from the outside, then I wouldn't change them.

All I'm trying to say is that the hosts-dot files permit or deny access
based on the remote system's IP address.  If the remote systems are on
a DHCP network, their addresses can change whenever they get a new
lease from the DHCP server (either by a lease expiration or a reboot
or because someone decided to repump them).

> -----Original Message-----
> From: Rick Stevens [mailto:rstevens vitalstream com]
> Sent: Friday, January 03, 2003 2:34 PM
> To: redhat-install-list redhat com
> Subject: Re: DHCP and HOST files
>
>
> Mugleston, Brad wrote:
>
> > I'm actually talking about the HOST series of files (HOSTS, HOSTS.DENY,
> > HOSTS.ACCEPT - I think those are the main names).  I know without the
>
> HOSTS
>
> > file I can't ping by computer name (on my home network).  It also seems to
> > help out in other network things.  In these files (HOSTS mainly) you put
>
> in
>
> > the IP address, short name and complete name.  Using DHCP the IP can
>
> change
>
> > from boot to boot.
> >
> > I was just wondering about the setup on these files.  I just changed to
>
> DHCP
>
> > and haven't noticed any problems, just trying to avoid some.
>
>
> They're called the "hosts-dot" files ("hosts.allow", "hosts.deny", etc.)
> and they specify external hosts to permit or deny access to.  The fact
> that YOU are on DHCP doesn't matter, as long as the remote hosts don't
> change IPs.
> ----------------------------------------------------------------------
> - Rick Stevens, Senior Systems Engineer     rstevens vitalstream com -
> - VitalStream, Inc.                       http://www.vitalstream.com -
> -                                                                    -
> -      The moving cursor writes, and having written, blinks on.      -
> ----------------------------------------------------------------------
>
>
>
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--
----------------------------------------------------------------------
- Rick Stevens, Senior Systems Engineer     rstevens vitalstream com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-            The gene pool could use a little chlorine.              -
----------------------------------------------------------------------