Odd tcp establishment sequence?

[Mohamed Lrhazi <lrhazi () gmail com>]

Hello,

am trying to debug why often times, my ssh client timeout trying to
establish connection to an ssh server (F5 device)...

Often times, I see a SYN sent twice, then server responding with an ACK,
then an SYN/ACK, then my client sends RST.

Other times, I see several SYN re-transmits, then ACK response, then
SYN/ACK, then ACK from client and connection getting established!

This is all not very normal, right? especially the ACK in response to a
SYN? that should cause clients to fail to continue establishing a
connection, right?

Thanks a lot for your input, I know this is not wireshark issue!

Mohamed,

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