Subject: 'best' way to control traffic volume through a NetBSD box?
To: None <firstname.lastname@example.org>
From: Carl Brewer <email@example.com>
Date: 05/14/2003 11:45:59
I'm trying to work out the best way to throttle a
network through a NetBSD router/firewall, and
am not sure of what's available to do this, and am
wondering if the list can help?
I've got a firewall/router doing PPPoE over a DSL
link, with two networks behind the firewall :
ugly ASCII diagram follows :
Internet ---- PPPoE ---- NetBSD box ---- Network A
I want to be able to monitor network B, and when it
reaches a certain amount of traffic over a predetermined
period (1 month in this case) throttle it down to
56k or thereabouts (some arbitary speed) for its link out
through the DSL line. The firewall/router is also doing
NAT, as nets A & B are RFC 1918 addresses. Nets A & B are
10 or 100 Mb/s ethernet.
I was thinking of using IPF's "count" and a cronjob to
keep track of the traffic.
Is ALTQ good for this sort of throttling or do I need to look at some