service prioritization

[badguy]

if i implement an openbsd PTP VPN connection is it possible to give priority to a specific traffic (say SSH) over the PTP VPN, if it is, How?

[jggimi]

Setting outbound packet priority / packet scheduling / packet queueing is generically known by the phrase, "Traffic Shaping." With OpenBSD, this is done via the pf(4) facility. The particulars are described in the PF User's Guide (www.openbsd.org/faq/pf/index.html) in the chapter titled: "Packet Queuing and Prioritization". Here's a link to that chapter: http://www.openbsd.org/faq/pf/queueing.htm

----

By "PTP", do you mean the Microsoft PPTP protocol? There are two 3rd party packages:

net/pptp -- the PPTP Client (sourceforge)
net/poptop -- a PPTP Server (poptop.org)

Note that Microsoft PPTP has significant security flaws. See http://www.schneier.com/pptp.html for details.