why don't i see SYN ECN CWR
i see SYN ECN CWR from Corporate Firewall capture but not remote Firewall. Why is that?
Hi,
TCP SYN segment with Explicit Congestion Notification (ECN) in IP header can be dropped or have that feature removed by some firewall.
You can try capturing "before" and "after" the firewall to see if that's the case here.
Cheers,
Spooky
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Asked: 2019-11-14 16:44:44 +0000
Seen: 1,885 times
Last updated: Nov 14 '19
Communication keeps on restarting between Source and Client, noticed RST, ACK.
Apparent Failure to Negotiate TCP Session
TCP SYN replied immediately by RST after successful session
There is no MSS replied in SYN,ACK
TCP sequence numbers - beginners question
Why my server does not respond to client's [SYN]?
frame 1 [syn] -> frame 2 [rst, ack] on port 25 of remote server