Re: Small TCP packets == very large overhead == DoS?

[Darren Reed]

In some mail from gregory duchemin, sie said:
> 
> hello,
> 
> know if the TCP silly window syndrome might be used too ?
> Uploading/downloading files byte per byte to/from a remote ftp server with a 
> stupid window size of one byte may generate a very high overhead.

Silly window sizes aren't so bad.  If you have a window size of one then
you only ever have one outstanding piece of data sent at a time.  So if
I have 16k of data, it might take 32k or more packets, but I can only send
one packet at a time.

In contrast, if I have a window of 16384 but the TCP MSS is only 1, I can
send all 16384 bytes now, each in their own packet, and more as I get ACKs
from the receiver.

Darren