* [9fans] kernel updates
@ 2002-07-16 19:49 presotto
2002-07-17 8:58 ` Don
0 siblings, 1 reply; 3+ messages in thread
From: presotto @ 2002-07-16 19:49 UTC (permalink / raw)
To: 9fans
I've copied a scad of changes onto the sources machine. In
particular
- I've hacked the hell out of TCP to get rid of
all the anomalies I could find.
> The problem LANL was having with throughput
dropping off drasticly with write size is gone.
> we no longer do lots of needless retransmissions
> IP CPU overhead is down (took out some high rollers)
- I've added SYN attack defenses. I used the low
state model rather than the SYN cookie one.
- a defense for NAPTHA DOS attacks from Dong Lin.
I don't think I've picked up any works in progress.
I still want to add scalable TCP windows but ran out
of time. I'll do it in a few weeks. It might help
with GB ethernet.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] kernel updates
2002-07-16 19:49 [9fans] kernel updates presotto
@ 2002-07-17 8:58 ` Don
0 siblings, 0 replies; 3+ messages in thread
From: Don @ 2002-07-17 8:58 UTC (permalink / raw)
To: 9fans
> - I've added SYN attack defenses. I used the low
> state model rather than the SYN cookie one.
>
Thanks, I was actually going to mention something
about this. I was attacked with two SYN floods
yesterday! :-)
Don
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] kernel updates
@ 2002-07-16 20:14 dpx
0 siblings, 0 replies; 3+ messages in thread
From: dpx @ 2002-07-16 20:14 UTC (permalink / raw)
To: presotto, 9fans
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Excellent, Thank you!
I started on window scale option, but never got very far before
getting side tracked. It would be really great to have.
-dp
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From: presotto@plan9.bell-labs.com
To: 9fans@cse.psu.edu
Subject: [9fans] kernel updates
Date: Tue, 16 Jul 2002 15:49:54 -0400
Message-ID: <0113a037afb5d6a94f6fb107a4fadb28@plan9.bell-labs.com>
I've copied a scad of changes onto the sources machine. In
particular
- I've hacked the hell out of TCP to get rid of
all the anomalies I could find.
> The problem LANL was having with throughput
dropping off drasticly with write size is gone.
> we no longer do lots of needless retransmissions
> IP CPU overhead is down (took out some high rollers)
- I've added SYN attack defenses. I used the low
state model rather than the SYN cookie one.
- a defense for NAPTHA DOS attacks from Dong Lin.
I don't think I've picked up any works in progress.
I still want to add scalable TCP windows but ran out
of time. I'll do it in a few weeks. It might help
with GB ethernet.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2002-07-17 8:58 UTC | newest]
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2002-07-16 19:49 [9fans] kernel updates presotto
2002-07-17 8:58 ` Don
2002-07-16 20:14 dpx
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