Re: serving the web without a web server
Just because you can ping the address, it doens't mean the website is
still working.
All ping does is affirm that your local box can contact and
communicate with the remote box; it has nothing to do with www.
On Tue, May 21, 2002 at 11:05:18PM +0100, Keith Robinson wrote:
> Hi,
>
> I have something bizarre happening: I serve some web sites, including http://www.dynamiccompany.co.uk and even though I've stopped apache (apachectl stop), I can still ping the web site:
>
> keith@eddie:~$ ping www.dynamiccompany.co.uk
> PING dynamiccompany.co.uk (213.131.168.136): 56 data bytes
> 64 bytes from 213.131.168.136: icmp_seq=0 ttl=245 time=27.8 ms
> 64 bytes from 213.131.168.136: icmp_seq=1 ttl=245 time=23.0 ms
>
> --- dynamiccompany.co.uk ping statistics ---
> 2 packets transmitted, 2 packets received, 0% packet loss
> round-trip min/avg/max = 23.0/25.4/27.8 ms
> keith@eddie:~$
>
> So, I do a traceroute (from a remote box):
>
> keith@eddie:~$ traceroute www.dynamiccompany.co.uk
> traceroute to dynamiccompany.co.uk (213.131.168.136), 30 hops max, 38 byte packets
> 1 172.20.103.254 (172.20.103.254) 9.735 ms 25.230 ms 10.375 ms
> 2 rdg-cam1-a-fa00.inet.ntl.com (213.105.91.49) 10.078 ms 14.060 ms 12.956 ms
> 3 bre-t2core-a-pos49.inet.ntl.com (62.253.64.165) 10.900 ms 18.956 ms 50.684 ms
> 4 bre-bb-a-so-330-0.inet.ntl.com (62.253.185.57) 12.658 ms 13.755 ms 14.886 ms
> 5 gfd-bb-b-so-700-0.inet.ntl.com (213.105.172.150) 15.009 ms 15.474 ms 25.388 ms
> 6 linx-ic-2-so-100-0.inet.ntl.com (62.253.185.74) 18.645 ms 55.592 ms 15.737 ms
> 7 linx4.newnet.co.uk (195.66.225.131) 20.428 ms 16.976 ms 27.521 ms
> 8 atm1.th.newnet.co.uk (212.87.77.21) 18.044 ms 17.804 ms 20.383 ms
> 9 atm1.cams.newnet.co.uk (212.87.77.154) 19.826 ms 27.832 ms 19.748 ms
> 10 my web server
>
>
> Of these, only 172.20.103.254 is unknown
>
> whois 172.20.103.254:
>
> IANA (IANA-BBLK-RESERVED)
> Internet Assigned Numbers Authority
> 4676 Admiralty Way, Suite 330
> Marina del Rey, CA 90292-6695
> US
>
> Netname: IANA-BBLK-RESERVED
> Netblock: 172.16.0.0 - 172.31.255.255
>
> Coordinator:
> Internet Corporation for Assigned Names and Numbers (IANA-ARIN) res-ip@iana.org
> (310) 823-9358
>
> Domain System inverse mapping provided by:
>
> BLACKHOLE-1.IANA.ORG 192.0.32.18
> BLACKHOLE-2.IANA.ORG 192.0.32.19
>
> These blocks are reserved for special purposes.
> Please see RFC 1918 for additional information.
>
> So, are ntl or newnet (where the box is located) caching (aggressively) or is there a different issue? Can anybody else ping www.dynamiccompany.co.uk (who aren't with ntl) - this could at least remove ntl from the equation.
>
> Any thoughts? I'm a bit stumped.
>
> All help greatly appreciated.
>
> Keith
>
>
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