Как узнать на каком ядре работает сайт?

nmap -sV -O www.kernel.org выдал:

Starting nmap 3.50 ( http://www.insecure.org/nmap/ ) at 2004-05-29 22:26 Local time zone must be set--see zic manual page
Interesting ports on zeus-pub.kernel.org (204.152.189.116):
(The 1646 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE VERSION
21/tcp open ftp vsFTPd
22/tcp open ssh OpenSSH 3.6.1p2 (protocol 1.99)
25/tcp open smtp?
53/tcp open domain ISC Bind 9.2.2
79/tcp open finger?
80/tcp open http Apache httpd 2.0.46 ((Red Hat))
135/tcp filtered msrpc
136/tcp filtered profile
137/tcp filtered netbios-ns
445/tcp filtered microsoft-ds
587/tcp open submission?
873/tcp open rsync (protocol version 26)
1720/tcp filtered H.323/Q.931
1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at http://www.insecure.org/cgi-bin/servicefp-submit.cgi :
SF-Port79-TCP:V=3.50%D=5/29%Time=40B90E38%P=i686-pc-linux-gnu%r(NULL,2BC,"
SF:The\x20latest\x20stable\x20version\x20of\x20the\x20Linux\x20kernel\x20i
SF:s:\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x202\.6\.6\nThe\x20latest\x2
SF:0prepatch\x20for\x20the\x20stable\x20Linux\x20kernel\x20tree\x20is:\x20
SF:\x20\x20\x202\.6\.7-rc1\nThe\x20latest\x20snapshot\x20for\x20the\x20sta
SF:ble\x20Linux\x20kernel\x20tree\x20is:\x20\x20\x20\x202\.6\.7-rc1-bk6\nT
SF:he\x20latest\x202\.4\x20version\x20of\x20the\x20Linux\x20kernel\x20is:\
SF:x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x202\.4\.26\nThe\x2
SF:0latest\x20prepatch\x20for\x20the\x202\.4\x20Linux\x20kernel\x20tree\x2
SF:0is:\x20\x20\x20\x20\x20\x20\x202\.4\.27-pre3\nThe\x20latest\x20snapsho
SF:t\x20for\x20the\x202\.4\x20Linux\x20kernel\x20tree\x20is:\x20\x20\x20\x
SF:20\x20\x20\x202\.4\.26-bk1\nThe\x20latest\x202\.2\x20version\x20of\x20t
SF:he\x20Linux\x20kernel\x20is:\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x2
SF:0\x20\x20\x202\.2\.26\nThe\x20latest\x20prepatch\x20for\x20the\x202\.2\
SF:x20Linux\x20kernel\x20tree\x20is:\x20\x20\x20\x20\x20\x20\x202\.2\.27-p
SF:re2\nThe\x20latest\x202\.0\x20version\x20of\x20the\x20Linux\x20kernel\x
SF:20is:\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x202\.0\.40\n
SF:The\x20latest\x20-mm\x20patch\x20to\x20the\x20stable\x20Linux\x20kernel
SF:s\x20is:\x20\x20\x20\x20\x20\x20\x20\x202\.6\.7-rc1-mm1\n");
Device type: general purpose
Running: Linux 2.4.X|2.5.X
OS details: Linux Kernel 2.4.18 - 2.5.70 (X86)
Uptime 3.107 days (since Wed May 26 19:55:02 2004)