ZyXEL Communications VSG1432-B101 Series Manual Do Utilizador
VSG1432-B101 Series User’s Guide
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Network Address Translation
(NAT)
12.1 Overview
This chapter discusses how to configure NAT on the ZyXEL Device. NAT (Network
Address Translation - NAT, RFC 1631) is the translation of the IP address of a host
in a packet, for example, the source address of an outgoing packet, used within
one network to a different IP address known within another network.
Address Translation - NAT, RFC 1631) is the translation of the IP address of a host
in a packet, for example, the source address of an outgoing packet, used within
one network to a different IP address known within another network.
12.1.1 What You Can Do in this Chapter
• Use the Port Forwarding screen to configure forward incoming service
requests to the server(s) on your local network (
• Use the Applications screen to forward incoming service requests to the
server(s) on your local network (
• Use the Port Triggering screen to add and configure the ZyXEL Device’s
trigger port settings (
).
• Use the DMZ screen to configure a default server (
).
• Use the ALG screen to enable and disable the SIP (VoIP) ALG in the ZyXEL
Device (
• Use the Sessions screen to limit the number of concurrent NAT sessions all
clients can use (
12.1.2 What You Need To Know
Inside/Outside
Inside/outside denotes where a host is located relative to the ZyXEL Device, for
example, the computers of your subscribers are the inside hosts, while the web
servers on the Internet are the outside hosts.
example, the computers of your subscribers are the inside hosts, while the web
servers on the Internet are the outside hosts.