Well I know nmap can detect the OS. I don't recall it could detect the rev of the kernel. 

https://nmap.org/book/man-os-detection.html

https://nmap.org/book/defenses.html

From: praveens...@gmail.com
Sent: April 27, 2020 9:41 PM
To: nginx@nginx.org
Reply-to: nginx@nginx.org
Subject: How to hide kernel information

Hello,

I have hosted Nginx 1.16.1 on Ubuntu 16.04. Have configured SSL from LetsEncrypt. Everything is running fine. Only port 80 and 443 are allowed.

During security testing, I see that kernel information is exposed on domain. More details at https://www.tenable.com/plugins/nessus/11936

Is there any way to hide kernel information using Nginx ?

Cheers,
PK
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