ZyXEL Communications 10, 50 Step, Step, Step, IP Address, End Port No, End Port No, Start Port No, Figure 9-10Menu 15.2 — NAT Server Setup

ZyWALL 10/50 Internet Security Gateway

Step 2. Enter 2 to go to Menu 15.2 - NAT Server Setup.

Step 3. Enter a port number in an unused Start Port No field. To forward only one port, enter it again in the End Port No field. To specify a range of ports, enter the last port to be forwarded in the End Port No field.

Step 4. Enter the inside IP address of the server in the IP Address field. In the following figure, you have a computer acting as an FTP, Telnet and SMTP server (ports 21, 23 and 25) at 192.168.1.33.

Step 5. Press [ENTER] at the “Press ENTER to confirm …” prompt to save your configuration after you define all the servers or press [ESC] at any time to cancel.

Menu 15.2 - NAT Server Setup

Rule Start Port No. End Port No. IP Address

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1.	Default	Default	0.0.0.0
2.	21	25	192.168.1.33
3.	0	0	0.0.0.0
4.	0	0	0.0.0.0
5.	0	0	0.0.0.0
6.	0	0	0.0.0.0
7.	0	0	0.0.0.0
8.	0	0	0.0.0.0
9.	0	0	0.0.0.0
10.	0	0	0.0.0.0
11.	0	0	0.0.0.0
12.	1026	1026	RR Reserved

Press ENTER to Confirm or ESC to Cancel:

Figure 9-10 Menu 15.2 — NAT Server Setup

NAT 9-15