From: "Warren W. Gay VE3WWG" <ve3wwg@cogeco.ca>
Subject: Re: Ada In Crosstalk
Date: Wed, 29 Jan 2003 12:00:18 -0500
Date: 2003-01-29T12:00:18-05:00 [thread overview]
Message-ID: <3E3808A2.8070902@cogeco.ca> (raw)
In-Reply-To: 6gr81b.vh1.ln@jellix.jlfencey.com
Vinzent Hoefler wrote:
> Dr. Michael Paus wrote:
>>Well, I think I can tell difference between a time out and a
>>name resolution problem. Here is my answer from nslookup:
>>
>>Nicht autorisierte Antwort:
>>Name: wbmas-stsc1.hill.af.mil
>>Address: 137.241.248.34
>>Aliases: www.stsc.hill.af.mil
>>
>>So you see the name resolution is not the problem.
>>
>>If I do a ping with the above IP # I never get to the
>>target.
>
> The server does not answer pings, look at this:
>
> jlfencey@jellix:~> ping www.stsc.hill.af.mil
> PING wbmas-stsc1.hill.af.mil (137.241.248.34) from XXX.XXX.XXX.XXX :
> 56(84) bytes of data.
>
> --- wbmas-stsc1.hill.af.mil ping statistics ---
> 8 packets transmitted, 0 received, 100% loss, time 7011ms
>
> But it answers http requests:
...
> Vinzent.
It is also not unusual for firewalls to reject ping requests,
even if you have a webserver available there. Just about
any firewall/security book will cover the reasons for it.
For that reason, and others, you cannot rely on ping
as a reliable indication.
--
Warren W. Gay VE3WWG
http://home.cogeco.ca/~ve3wwg
next prev parent reply other threads:[~2003-01-29 17:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-26 19:12 Ada In Crosstalk Richard Riehle
2003-01-28 11:11 ` Dr. Michael Paus
2003-01-28 12:04 ` Jeffrey Creem
2003-01-28 13:34 ` Wes Groleau
2003-01-28 15:09 ` David C. Hoos
2003-01-28 16:20 ` Wes Groleau
2003-01-28 16:24 ` Wes Groleau
2003-01-28 17:49 ` Warren W. Gay VE3WWG
2003-01-28 20:57 ` Wes Groleau
2003-01-28 21:00 ` Vinzent Hoefler
2003-01-29 8:26 ` Dr. Michael Paus
2003-01-29 10:09 ` John R. Strohm
2003-01-29 14:43 ` Dr. Michael Paus
2003-01-30 18:24 ` Michael Bode
2003-01-29 15:20 ` Vinzent Hoefler
2003-01-29 17:00 ` Warren W. Gay VE3WWG [this message]
2003-01-29 17:06 ` Vinzent Hoefler
2003-01-28 18:42 ` tmoran
2003-01-29 13:09 ` John English
2003-01-29 14:51 ` Wes Groleau
2003-01-28 17:09 ` Richard Riehle
2003-01-28 17:08 ` David C. Hoos
2003-01-28 18:40 ` chris.danx
2003-01-29 15:01 ` Wes Groleau
2003-01-30 7:04 ` Dr. Michael Paus
2003-01-30 19:18 ` Wes Groleau
2003-01-29 19:56 ` Marc A. Criley
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