Eric:
I'm setting up a NAT pool on a firewall. I think I understand now that
the netmask is independent of the starting address for the network it is
masking. Just to make sure my understanding is correct, if my network
starts at, say, 192.168.1.80, I can't very well have a netmask of anything
smaller than 80, right? This would mean I was trying to set up an IP
range large than 255.
- Mike
On Tue, 8 Feb 2000, Eric Sisler wrote:
> Michael J. McGillick <[EMAIL PROTECTED]>
>
> >I'm trying to understand how netmasks work. We want to set up a small
> >pool of IP Addresses, and the only thing we can do is specify the network
> >and the netmask. They want the pool to start at 192.168.1.85, and have 5
> >usuable IP Addresses. What do I specify for the netmask, and more
> >importantly, why? I understand about setting up a network range, when the
> >network is specified at 0, but this 80 is throwing off my thinking.
>
> This won't answer your netmask question, but what are you planning on using
> the small pool for? Are you trying to subnet a larger range so that you
> can have them on different sides of a router (or physical network or
> LAN/WAN) or for some other purpose? There used to be a pretty good subnet
> calculator on Cisco's website, but I haven't looked for quite some
> time. You could tell it what class (A, B, or C) of address you had to work
> with and how many subnets or hosts you wanted to create and it would figure
> out the network address, subnet mask, # of networks and # of hosts per
> network for you.
>
> If you just want to set aside a specific pool of addresses within a larger
> range, what about using DHCP?
>
> -Eric
>
>
> Eric Sisler
> Library Computer Technician
> Westminster Public Library
> Westminster, CO, USA
> [EMAIL PROTECTED]
>
> Linux - don't fear the Penguin.
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> Visit http://gromit.westminster.lib.co.us/linux
>
>
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