tcpdump results

Donald Cunningham <[email protected]>
Newsgroups gmane.comp.security.intrusions
Message-ID <[email protected]>
Hello all,

I'm seeing some tcpdump results I don't fully
understand.  Would one of you kindly point me to a
reference that will help me understand the output of
the traces shown below.  In particular I don't
understand the part of the trace within the curly
braces:

09:16:21.486544 local.ip.address.1494 >
remote.ip.address.80: . ack 128341 win 48990
<nop,nop,sack sack 1 {136621:138001} > (DF)

09:16:21.486546 local.ip.address.1494 >
remote.ip.address.80: . ack 128341 win 48990
<nop,nop,sack sack 1 {136621:139381} > (DF)

09:16:21.487166 local.ip.address.1494 >
remote.ip.address.80: . ack 128341 win 48990
<nop,nop,sack sack 1 {136621:140761} > (DF)

09:16:21.487293 local.ip.address.1494 >
remote.ip.address.80: . ack 128341 win 48990
<nop,nop,sack sack 1 {136621:142141} > (DF)


I know, I know... but I've RTFManpage and it didn't
help.

Thanks,

Don


		
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