P100IH ISDN Router

Menu 15.2.1 - Multiple Server Configuration

Port #

IP Address

-------------------

1.Default

192.168.1.10

2.0

0.0.0.0

3.00.0.0.0

4.00.0.0.0

5.00.0.0.0

6.

0

0.0.0.0

7.

0

0.0.0.0

8.

0

0.0.0.0

9.

0

0.0.0.0

10.

0

0.0.0.0

11.

0

0.0.0.0

12. 1025

RR Reserved

Press ENTER to Confirm or ESC to Cancel:

Figure 4-18 Specifying an Inside Sever

4.6.3Example 3 – General Case

In this example, we have 3 IGAs from our ISP. We have many departments but two have their own FTP server. All departments share the same router. We want to reserve 1 IGA for each department with an FTP server and the other IGA is used by all. We want to map the FTP servers to the first two of our IGAs and the other LAN traffic to the remaining IGA. We also want to map out third IGA to an inside web server and mail server. We need to configure 4 rules, 2 bi-directional and 2 one directional as follows.

Rule 1. We map our first IGA to our first inside FTP server for FTP traffic in both directions (1: 1 mapping, giving both local and global IP addresses).

Rule 2. We map our 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. We map our other outgoing LAN traffic to IGA3 (Many : 1 mapping).

Rule 4. We also map our third IGA to our web server and mail server on the LAN. Type Server allows us to specify multiple servers, of different types, to other machines behind NAT on the LAN.

Our situation looks somewhat like this:

NAT

4-17

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ZyXEL Communications 1001H manual Example 3 General Case, Specifying an Inside Sever