C-8 User’s Reference Guide

Add Exported Service

 

 

 

+-Type------Port--+

 

+-----------------+

Service...

ftp

21

 

telnet

23

 

smtp

25

Local Server's IP Address:

tftp

69

 

gopher

70

 

finger

79

 

www-http

80

 

pop2

109

 

pop3

110

 

snmp

161

 

timbuktu

407

 

pptp

1723

 

irc

6667

 

Other...

 

 

+-----------------+

ADD EXPORT NOW

 

CANCEL

Within exported services is a pop-up list of well-known TCP and UDP services that can be redirected to a single host on the Netopia R5000 Series Router’s LAN interface. There is also an Other... option that allows for manual configuration of additional TCP or UDP ports. You can define a total of 32 exported services.

When a particular type of service is redirected to an IP address, that service is removed from the pop-up list, since only one type of service can be redirected to a single host. However several different types of services can be redirected to a single or multiple hosts. For example, port 80 (WWW server) could be redirected to 192.168.5.3 on the Netopia R5000 Series Router’s LAN interface, and port 23 (Telnet) can be redirected to that same host.

Summary

NAT is a powerful feature of the Netopia R5000 Series Router and when used and set up properly can yield a secure network while only using one IP address on the WAN interface. Note that the addresses listed in this appendix are for demonstration purposes only. Do not use these addresses when configuring your local network.

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Netopia R5100, R5300, R5200 manual Summary