--On Dienstag, 03. Juni 1997, 00:53 -0700 "Tony Rall"
<trall @
almaden .
ibm .
com> wrote:
>
>>Could someone explain the difference between Network Address Translation
>>and IP Masquerading. Which is better to use? What firewall products
>>offer which?
> NAT supports hiding n internal addresses behind m external addresses,
where n is
> usually less than m.
>
> IPMasq is a subset of NAT where n=1.
>
> One of these is likely available on a number of products; IBM's Firewall
(nee
> SNG) supports NAT.
>
> Tony Rall
>
With Linux, IP masquerading hides n internal addresses behind (normally) 1
external address; n usually is at least 2 (one network interface on the
masquerading box and at least one client on the internal network). The
xternal address can also be a dynamic IP address, so you can connect a LAN
to the Internet with a dial-up IP connection ...
Willi Kraml
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