ZyXEL Communications ZYWALL 1050 - V2.00 EDITION 1 Guide de l'utilisateur télécharger pdf (Page 109)

ZyWALL (ZLD) CLI Reference Guide

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CHAPTER 12

Virtual Servers

This chapter describes how to set up, manage, and remove virtual servers. Virtual server

commands configure NAT.

12.1 Virtual Server Overview

Virtual server is also known as port forwarding or port translation.

Virtual servers are computers on a private network behind the ZyWALL that you want to make

available outside the private network. If the ZyWALL has only one public IP address, you can

make the computers in the private network available by using ports to forward packets to the

appropriate private IP address.

12.1.1 1:1 NAT and Many 1:1 NAT

1:1 NAT - If the private network server will initiate sessions to the outside clients, use 1:1 NAT

to have the ZyWALL translate the source IP address of the server’s outgoing traffic to the

same public IP address that the outside clients use to access the server.

Many 1:1 NAT - If you have a range of private network servers that will initiate sessions to the

outside clients and a range of public IP addresses, use many 1:1 NAT to have the ZyWALL

translate the source IP address of each server’s outgoing traffic to the same one of the public IP

addresses that the outside clients use to access the server. The private and public ranges must

have the same number of IP addresses.

One many 1:1 NAT rule works like multiple 1:1 NAT rules, but it eases the configuration

effort since you only create one rule.

12.2 Virtual Server Commands Summary

The following table describes the values required for many virtual server commands. Other

values are discussed with the corresponding commands.

Table 57 Input Values for Virtual Server Commands

LABEL DESCRIPTION

service_object The name of a service. You may use 1-31 alphanumeric characters,

underscores(

_), or dashes (-), but the first character cannot be a number. This

value is case-sensitive.

profile_name The name of the virtual server. You may use 1-31 alphanumeric characters,

underscores(_), or dashes (-), but the first character cannot be a number. This

value is case-sensitive.

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ZyXEL Communications ZYWALL 1050 - V2.00 EDITION 1 Guide de l'utilisateur Page 109