Peter N. M. Hansteen has put an updated version of the Firewalling with PF manuscript which he presented in Oslo last week. His document (lecture) talks about firewalls and related functions, with examples from real life with the OpenBSD project’s PF (Packet Filter). He discusses pf firewall configuration on various BSDs – FreeBSD, OpenBSD and NetBSD. The document is a work in progress, he plans on updating it periodically.
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