I just created a web server running on ubuntu 9.1 with apache2, php5 and mysql.
I was just running a security scan on the server using Nessus. When it was done it told me that it was able to find out the operating system running on the box is:
---- Remote operating system : Linux Kernel 2.6 on Ubuntu 9.10 (karmic)
I would like to be able to hide this information from scans. Can anyone tell me how to do this using ubuntu, apache, or whatever other mechanism works.