Nikolaos Milas:
> A next move could be closer examination of dropped packets by our 
> firewall. I found this article for a start:
> 
> https://networklessons.com/cisco/asa-firewall/cisco-asa-packet-drop-troubleshooting
> 

I mentioned this, emphasis added:

> This is a TCP-level problem.  The remote server's TCP/IP stack, OR
> SOME MIDDLE BOX, is refusing connections at the TCP level.

Look no further. CISCO PIX or ASA has a long history of screwing
up connections with protocol inspection or other features.

        Wietse

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