Eicon Networks DIVA T/A ISDN Modem Podręcznik Użytkownika Pobierz pdf (Strona 124)

Chapter Nine: Advanced Installations IP filters

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When done, the filter stack should look like this:

Allowing incoming traffic only from a specific network

This example shows how to allow the DIVA LAN ISDN Modem to only receive incoming data from a specific

network (112.111.212.0) on the Internet. Data from all other networks is dropped. However, outgoing traffic is

not affected.

This requires defining two filters. Since these filters are applied against data from the Internet, they are defined

for the ISP profile.

1st filter

Define the 1st filter to forward only incoming traffic from 112.111.212.0. Place this filter in the third position

in the stack.

2nd filter

Define the 2nd filter to forward all outgoing traffic. The easiest way to do this is to edit the existing filter that is

set to “Forward all datagrams being sent from anywhere that contain any protocol.” Change it to “Forward

outgoing datagrams being sent from anywhere that contain any protocol.”

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Eicon Networks DIVA T/A ISDN Modem Podręcznik Użytkownika Strona 124