pf and keep/modulate state on 6.2

James Seward jamesoff at
Mon Feb 26 09:17:31 UTC 2007

On 2/25/07, J.D. Bronson <jbronson at> wrote:
> I was noticing sporadic FTP transfers DOWN to my fbsd 6.2 machine
> over my DSL would go/pause/go/pause - just a bit, but
> overall slowed the transfers down quite a bit.
> I looked at my pf.conf file and changed MODULATE state to KEEP state
> in all places and my issues went clean consistent downloads.

Wow, this fixed my FTP-over-DSL-to-6.2 problem too. With modulate
state, I was getting ~30K/sec. With just keep state, I'm now getting
more like what my connection is capable of. This is between two 6.2
hosts on opposite sides of the Atlantic.

Ted, I use pf because I like the format of the configuration file, I
like the logging and pftop, and like how it's harder to lock yourself
out of a remote machine by accident :)


More information about the freebsd-questions mailing list