Active-Filter option in pppd

[Brian Witowski]

I have looked high and low for an example of the syntax to use this in my /etc/ppp/options file.  I have seen references to tcpdump, but that doesn't help because I don't know how to use that either.

My problem is I have fetchmail checking mail every 5 minutes.  However, it keeps my connection alive when nobody is using a workstation.  I would like to filter smb packets as well as pop3 and smtp ports.  In other words, it would only run fetchmail when there are active internet users.


Thanks,
Brian
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