DMZ Firewall Solution for the Express Router

Note The order of the NAT entries is important.

NAT entries are defined as follows:

Entry Function

1Directs all incoming HTTP requests to the Web server.

2Directs all incoming FTP requests to the Web server.

3Directs all incoming SMTP requests to the SMTP server

4Directs all incoming NNTP requests to the News server.

5Directs all other incoming traffic to the DMZ.

Settings

Mapping type:

Static Port (Single IP)

Internal address:

10.2.0.1

Internal port:

80

External IP address:

<IP address from ISP>

External port:

80

Mapping type:

Static Port (Single IP)

Internal address:

10.2.0.1

Internal port:

21

External IP address:

<IP address from ISP>

External port:

21

Mapping type:

Static Port (Single IP)

Internal address:

10.2.0.3

Internal port:

25

External address:

<IP address from ISP>

External port

25

Type:

Static Port (Single IP)

Internal address:

10.2.0.4

Internal port:

119

External IP address:

<IP address from ISP>

External port:

119

Type:

Network to single IP

Internal address:

10.2.0.0

External IP address:

<IP address from ISP>

3.3IP Filters Setup

This section describes the required IP filters for the LAN1, LAN2 and connection to the Internet.

3.3.1 LAN1 Filters

3.3.1.1 Receive (Rx) Filters on LAN1

Configure these receive filters for the LAN1 port, shown as they appear in Advanced Setup.

07-12-99

Version 1.0

7

Page 8
Image 8
Intel 9535, 9515, 9525 manual IP Filters Setup, Entry Function, Settings, Receive Rx Filters on LAN1