VNC and NAT

Scott "The Axe" O'Bryan axeman "at" dwarf.org
Tue, 19 Mar 2002 15:27:24 +0000


Yes, but if the lease is up and the computer goes down or network
connectivity is spotty, it does change.  My service changes me all the
time and even my DHCP behind my firewall switches me from time to time,
unfortunately.  Nonetheless, it is worth a try, you are 100% correct on
the DHCP lease policies, I just found them to be unreliable in my
application.

-----Original Message-----
From: owner-vnc-list "at" uk.research.att.com
[mailto:owner-vnc-list "at" uk.research.att.com] On Behalf Of Beerse, Corni
Sent: Tuesday, March 19, 2002 1:30 AM
To: 'vnc-list "at" uk.research.att.com'
Subject: RE: VNC and NAT

> -----Original Message-----
> That is correct, but as we know, the DHCP MAY change at the most
> inconvienient times.  You can set up your DHCP server to assign

That's not true! IF a DHCP server has leased an IP address to an other
machine, there is a lease time and a lease period. During the lease
time,
the client can alwasy extend the lease with the lease period. The DHCP
server must accept this extend. Hence: once you got an IP address, you
can
use it forever as long as you keep extending the lease within the lease
period.

> addresses only within a certain range and then fix the IP of the VNC
> server outside of that range.  For instance, my network topology looks
> like this:
>
> Other network systems:
> Router:   192.168.1.1
> DHCP:     192.168.1.100 - 192.168.1.254
>
> VNC Server:
> IP Address:  192.168.1.10
> Gateway:	 192.168.1.1
> DNS:		 The DNS for your ISP.
>
> This always works if you have access to your DHCP configuration.  If
> not, well then there is nothing you can do.
>
> Also, if your DHCP is due to your ISP on some sort of Broadband
> connection, then I suggest TZO (www.tzo.com), they will fix an IP
> Address to an ISP's DHCP.  But make sure that you have some sort of
> firewall in place.
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