CVE-2002-0510
Description
From CVE.org
The UDP implementation in Linux 2.4.x kernels keeps the IP Identification field at 0 for all non-fragmented packets, which could allow remote attackers to determine that a target system is running Linux.
Statement
Red Hat do not consider this to be a security issue and there are many ways that you can identify or fingerprint a Linux machine. Users that wish to block fingerprinting can use various techniques to disguise their operating system, for example see http://www.infosecwriters.com/text_resources/pdf/nmap.pdf
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