ZyXEL Communications Parental Control Gateway HS100/HS100W - Manual (Page 255)

HomeSafe User’s Guide
25-8 NAT
25.5.2 Example 2: Internet Access with an Inside Server
The dynamic Inside Global Address is assigned by the ISP.
Figure 25-12 NAT Example 2
In this case, you do exactly as above (use the convenient pre-configured SUA Only set) and also
go to menu 15.2 to specify the Inside Server behind the NAT as shown in the next figure.
Figure 25-13 Menu 15.2.1 Specifying an Inside Server
25.5.3 Example 3: Multiple Public IP Addresses With Inside Servers
In this example, there are 3 IGAs from our ISP. There are many departments but two have their
own FTP server. All departments share the same router. The example will reserve one IGA for
each department with an FTP server and all departments use the other IGA. Map the FTP servers
to the first two IGAs and the other LAN traffic to the remaining IGA. Map the third IGA to an
inside web server and mail server. Four rules need to be configured, two bi-directional and two
unidirectional as follows.
Rule 1. Map the first IGA to the first inside FTP server for FTP traffic in both directions (1 : 1
mapping, giving both local and global IP addresses).
Rule 2. Map the second IGA to our second inside FTP server for FTP traffic in both directions
(1 : 1 mapping, giving both local and global IP addresses).
Rule 3. Map the other outgoing LAN traffic to IGA3 (Many : 1 mapping).
Rule 4. You also map your third IGA to the web server and mail server on the LAN. Type
Server allows you to specify multiple servers, of different types, to other computers
behind NAT on the LAN.
The example situation looks somewhat like this:
Menu 15.2.1 - NAT Server Setup
Rule Start Port No. End Port No. IP Address
---------------------------------------------------
1. Default Default 192.168.1.10
2. 0 0 0.0.0.0
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. 0 0 0.0.0.0
Press ENTER to Confirm or ESC to Cancel: