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Re: Forcing specific IP address with DHCP



On Thu, 17 Apr 2008 15:12:22 -0400
Celejar <celejar@gmail.com> wrote:

> On Thu, 17 Apr 2008 11:36:53 -0500
> Michael Shuler <michael@pbandjelly.org> wrote:
> 
> > On 04/17/2008 09:31 AM, Celejar wrote:
> > > I find myself in a bizarre networking predicament.  I need to have
> > > a server (henceforth 'edith') accept incoming connections (e.g. ssh)
> > > from the Internet.  edith is behind a home gateway / router / switch
> > > ( Trendware / Trendnet TEW-452BRP [0] - henceforth 'gwen').  gwen will
> > > forward specific ports to specific private, internal IP addresses, but
> > > bizarrely, it seems to provide no facility for ensuring that a specific
> > > host will be assigned, via DHCP, a particular IP address.
> > 
> > Not such a bizarre thing - I do this for several servers running behind 
> > a Debian router/firewall server for my home connection.  I don't know 
> > about the particular router you are using, but if it does not allow 
> > MAC->IP mapping, I think assuming that it has no dynamic DHCP client is 
> > fair  :P
> 
> I don't quite follow you here.  What's a dynamic DHCP client?  gwen has
> both a DHCP server for the LAN, as well as a client for getting its own
> external IP address from the ISP.  Can you elaborate?

[Michael clarified:]

>> bleh.. s/DHCP/DNS/  I meant dynamic DNS there..

gwen actually does have a dynamic DNS client, with support for DynDNS,
No-IP and EasyDNS, but I am still using ddclient on edith.

Celejar
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