ya but....the NS takes it one step further allowing one single external IP to map to multiple IPs on the internal network based on the specific service.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Rod Dorman Sent: Thursday, March 07, 2002 11:17 AM To: [EMAIL PROTECTED] Subject: RE: [IMail Forum] Firewalls 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. -- [EMAIL PROTECTED] "Hangers on though you be friends be more humble when asking for seconds." Katsuhito Masaki (Grandfather); Tenchi Muyo Episode 7 Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
