Linux server issue

[lseowhua]

Hi all,
Can someone please help to provide solutions for below security-related Linux server issue?

Level : 2 UDP Constant IP Identification Field Fingerprinting Vulnerability
Level : 2 TCP Sequence Number Approximation Based Denial of Service
Level : 2 Operating System Detected
Level : 2 Host Uptime Based on TCP TimeStamp Option

Currently we have two name servers and both also having the above same issue.
Thanks in advance for your help

[Monk]

I assume you're running a PCI scanner on your machine. You should consult google for help on all of these.

[BehaartesEtwas]

I think that guy has found the wrong board...