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Cloudflare protected Websites disconnects when Sophos Firewall TLS Decryption is enabled

Markus Heilgemeier

Hello together,

i have the issue that some Websites like https://www.mediamarkt.de , https://www.poco.de , https://moemax.de 

are disconnecting the TCP Stream when our Sophos Firewall is running TLS Decryption against them.

Once the TLS Decryption is turned off Websites works fine.

Since the interruption comes from Cloudflare Server theres is no Errors in TLS Log of Sophos Firewall.

So it is not possible to fix the errors about the TLS Error Overview.

For my understanding the only way to get things work is to excluce the affected FQDNs from Decryption.

But which sites must be tested manually Disappointed

Does anyone know an more secure Soluton or at least the parameters for creating an custom application category for all Sites protected by cloudflare?



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