<div dir="ltr">Another thing to verify is whether your packets get tweaked by anything on the way - when you see the three-way handshake you just described - was the packet size, number, serial numbers and flags received exactly as they were sent or can you identify packets being sent more times than received, or fragmented, or flags set/reset etc?<br>
<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On 23 January 2013 07:15, Shachar Shemesh <span dir="ltr"><<a href="mailto:shachar@shemesh.biz" target="_blank">shachar@shemesh.biz</a>></span> wrote:<br>
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<div>On 01/20/2013 10:59 PM, shimi wrote:<br>
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<div style="direction:ltr" text="#000000" bgcolor="#FFFFFF"><span><font color="#888888"><br>
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<div class="gmail_quote">
<div><br>
Does ping work when the internet is 'down'? If so, I would
go for:<br>
<br>
TCP Timestamps, TCP SYN Cookies, Selective ACKs, Window
Scaling<br>
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SYN cookies are irrelevant here, as my machine is the one initiating
the connection. I am not sure what the question is regarding the
other three. They are all present in both my outgoing SYN and the
reply SYN+ACK. There is no reason for my machine to respond with a
RST.<span class="HOEnZb"><font color="#888888"><br>
<br>
Shachar<br>
<pre cols="72">--
Shachar Shemesh
</pre>
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