I notice this with my DSL line. Normally I have a score of 20 but
randomly the test fails and I get hit with a penality:
http://www.pool.ntp.org/scores/216.39.145.27
The solution should be to add traffic shaping to my Linux firewall.
That is one of those projects that I haven't finished yet.
Does anyone have Shorewall configuration files for NTP traffic shaping?
Thanks,
Steve Herber [EMAIL PROTECTED] work: 206-221-7262
Security Engineer, UW Medicine, IT Services home: 425-454-2399
On Sat, 15 Jul 2006, Rob Janssen wrote:
Ask Bj?rn Hansen wrote:
The "A" in ADSL has minimal or no impact.
The static offset caused by the "A" in ADSL is very small, and it is quite
likely that upstream packets, that experience more delay on the final hop,
are delayed less than downstream packets further in the carrier and/or ISP
network (because that is loaded more in the downstream direction).
However, the "A" in link usage has quite some influence. When you are up- or
downloading large files and saturate the link, the delay in one direction
will really jump up. Normal delay of an ADSL link is only a few ms in each
direction (e.g. 7ms roundtrip for a standard ping packet), but this will
easily increase to 50-100 ms in one direction when a TCP connection is
pushing data.
To avoid this, traffic shaping can be used. This especially helps for
avoiding saturation of the uplink.
Rob
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