- What do you mean by "control"?
PF can block, pass, or shape traffic. If you intend to do any traffic shaping, your
unsupported release of OpenBSD used a very different traffic queuing mechanism than is used in more recent releases.
On September 1, OpenBSD 6.0 will be released, and only releases 6.0 and 5.9 will be supported.
- What do you mean by "streaming"?
PF manages network traffic by protocol, or, if using the TCP UDP protocols, by their origination and destination port numbers.
You must by able to identify the particular traffic in order to manage it.