dave.marchette wrote:
> Ya the NS is a nice box because it can do virtual IP. Example. You were a
> slacker and set your DNS up in such a way as to not separate the entry for
> pop.mail.com and smtp.mail.com. With the Netscreen, you can actually have
> one external IP for both of these, then redirect port 110 to one ip (and
> server) on your internal network, and then direct smpt on port 25, incoming
> to another box on your internal net(like an Imgate box, AV, whatever).
This is usually known as Network Address Translation (NAT) or
sometimes as Port Address Translation (PAT). Most devices with
routing capabilities nowadays have this capability.
> This saves you from having to require all of your clients change their
> outgoing mail server setting to something else because you never separated
> them out in the first place.
If they were referencing it via name instead of using an IP address
it would also remove the need for client changes.
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