For some url only by one internet connection always have 404 error, if try directly from the internet router all is fine in both ISP, but after the Checkpoint appliance only works by one connection, only happen with one website, what can be??
Microsoft Exchange Online Protection and TCP segment out of maximum allowed sequence. Packet dropped.
We have recently seen an increasing amount of drops due to "TCP segment out of maximum allowed sequence." After contact with support we are provided sk66576. The issue is thus related to tcp window size and the firewall will drop a session after not seeing the expected ACK after 16384 bytes by default. The recommendation as per