How do I monitor my PF based firewall?

[Falk Brockerhoff - smartTERRA GmbH]

Hello,

I like to monitor my firewalls using snmp and cacti. But I don't know  
how to get all the information about pf, states, etc. On the net I  
only found hints about older OpenBSD Versions (I use OpenBSD 4.4 - 
stable and the included snmpd). Can you please give me a hint into the  
right direction?

Regards,

Falk