On May 4, 2004 11:50 am, Chuck Swiger wrote:
> The Jetman wrote:
> [ ... ]
>
> > Wes: I've used a couple of Internet speed tests, at different times,
> > but always w/ the same configs. Neither config has been modified. All
> > of the results are the same. I use ADSLGuide and DLSReports as my speed
> > tests, which are in different continents, but both report the same
> > speeds. I use different browsers, but Java is what does the deal.
>
> If you're using a DSL provider like Verizon which uses PPPoE, you might try
> adjusting your MTU down to 1490 or so, or else you will fragment large data
> packets and encounter quite a slowdown.
>
> Use something like this in your /etc/rc.conf file:
>
> ifconfig_fxp0="inet 192.168.1.2 netmask 255.255.255.0 mtu 1490"
>
> ...or run ifconfig directly and see whether this helps.
On this exact note (and for sake of saveing hours for someone else...) , I
recently turned a Macintosh G3 box running OSX 10.3 into a firewall/nat box
without using their brain dead "internet shareing" tool. What I found was
their natd sucked wind unless you had the apple vender extention of
"clamp_mss yes" in your natd.conf
From the natd man page:
-clamp_mss
This option enables MSS clamping. The MSS value is derived
from the MTU of the interface specified in the -interface
option.
I know this option isn't valid in FreeBSD's natd and I'm not sure if perhaps
it is handleded transparently. But with out this option under OSX I saw
simular problems as to what you are describing when natting packets, even
though the same download form the gateway were AOK
(Perhaps soemone a bit more versed on the internals of nat can comment on this
under FreeBSD)
--
Darcy Buskermolen
Wavefire Technologies Corp.
ph: 250.717.0200
fx: 250.763.1759
http://www.wavefire.com
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