Zalip CDM532AM, Руководство пользователя

Страница: 32 / 68

32
3.1.2. NAT
In this section, you can configure Virtual Server, Special AP, and DMZ settings.
3.1.2.1 Virtual Server
This product’s NAT firewall filters out unrecognized packets to protect your Intranet, so all hosts
behind this product are invisible to the outside world. If you wish, you can make some of them
accessible by enabling the Virtual Server Mapping.
A virtual server is defined as a
Service Port
, and all requests to this port will be redirected to the
computer specified by the
Server IP. Virtual Server
can work with
Scheduling Rules
, and give
user more flexibility on Access control. For the details, please refer to
Scheduling Rule
.
For an example, if you have an FTP server (port 21) at 192.168.123.1, a Web server (port 80) at
192.168.123.2, and a VPN server at 192.168.123.6, then you need to specify the following virtual
server mapping table:
Service Port Server IP Enable
21 192.168.123.1 V
80 192.168.123.2 V
1723 192.168.123.6 V
Click on “Save” to store your settings or click “Undo” to give up the changes.