Groups > comp.os.linux.networking > #2449

Re: Frustrated that I don't UNDERSTAND why my network times out

From	Mike Easter <MikeE@ster.invalid>
Newsgroups	comp.os.linux.networking, alt.comp.freeware, alt.internet.wireless
Subject	Re: Frustrated that I don't UNDERSTAND why my network times out
Date	2013-10-09 15:51 -0700
Message-ID	<bbm4vfFt6r8U1@mid.individual.net> (permalink)
References	(2 earlier) <anvdiax31m.ln2@news.roaima.co.uk> <l31p66$bfj$1@dont-email.me> <l344d5$gh9$1@speranza.aioe.org> <bblli5FpunoU1@mid.individual.net> <l348m1$rst$3@speranza.aioe.org>

Cross-posted to 3 groups.

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billy wrote:
> Mike Easter wrote:
>
>>> Q: What is the web browser using? (ICMP? TCP?)
>>
>> TCP.  But the 'process' involves TCP/IP.
>
> Hi Mike,
>
> So, if the web browser is what is failing, and if the
> debug commands using TCP also fail, what value is there
> in everyone saying that ICMP is dropped?
>
> What does ICMP have to do with the web browser failing?
>
> That is, why is everyone suggesting I test ICMP when the
> failure of the web browser is the problem I'm trying to
> test?

Personally when I'm troubleshooting something I take into account the 
fact that some hops handle ICMP, UDP, and TCP differently.  One of my 
preferred tools for testing access to a server is Steve Gibson's IDServe 
which runs under windows or WINE in linux and doesn't require 
installation in either.

For this target I would be using TCP port 80 on/at the webserver at 
centos.  The tool shows my system resolving the IP and connecting to the 
webserver there.

Initiating server query ...
Looking up IP address for domain: www.centos.org
The IP address for the domain is: 72.232.194.162
Connecting to the server on standard HTTP port: 80
[Connected]  Requesting the server's default page.
The server returned the following response headers:
[redact html from the centos Apache server]
Query complete.

> I don't understand why ICMP has 'anything' directly to do
> with the web browser failing (other than ICMP also fails).

 From the other info you've posted here, your system when not reaching 
centos on port 80 TCP IDServe would show you resolving the name but not 
connecting, which IDServe interprets as the server being stealthed or 
not online, so its use wouldn't add anything to this particular 
problem's solution; but I mention it as an indication that 'typically' I 
don't use an ICMP tool to test some TCP-related server issues.

-- 
Mike Easter

Thread

Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-08 03:32 +0000
  Re: Frustrated that I don't UNDERSTAND why my network times out "Gary R. Schmidt" <grschmidt@acm.org> - 2013-10-08 15:37 +1100
    Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 14:26 +0000
      Re: Frustrated that I don't UNDERSTAND why my network times out Thomas Keusch <fwd+usenet-spam2013q4-1381444031@spam2013q4.bsd-solutions-duesseldorf.de> - 2013-10-10 22:32 +0000
  Re: Frustrated that I don't UNDERSTAND why my network times out David Hough <noone$$@llondel.org> - 2013-10-08 07:30 +0100
    Re: Frustrated that I don't UNDERSTAND why my network times out Chris Davies <chris-usenet@roaima.co.uk> - 2013-10-08 19:32 +0100
      Re: Frustrated that I don't UNDERSTAND why my network times out Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2013-10-08 23:16 +0300
        Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 17:39 +0000
          Re: Frustrated that I don't UNDERSTAND why my network times out Mike Easter <MikeE@ster.invalid> - 2013-10-09 11:28 -0700
            Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 18:52 +0000
              Re: Frustrated that I don't UNDERSTAND why my network times out Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2013-10-09 22:47 +0300
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 20:50 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-09 21:30 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 01:05 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 01:09 +0000
              Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-09 19:51 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 20:42 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out ~BD~ <~BD~@nomail.afraid.org> - 2013-10-09 22:09 +0100
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 01:07 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out ~BD~ <~BD~@nomail.afraid.org> - 2013-10-10 07:41 +0100
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-09 21:36 +0000
              Re: Frustrated that I don't UNDERSTAND why my network times out Mike Easter <MikeE@ster.invalid> - 2013-10-09 15:51 -0700
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-10 00:15 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 00:19 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 00:33 +0000
      Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 10:54 +0000
      Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 11:09 +0000
        Re: Frustrated that I don't UNDERSTAND why my network times out "ps56k" <pschuman_no5pam_m3@interserv.com> - 2013-10-10 16:34 -0500
          Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-10 22:40 +0000
            Re: Frustrated that I don't UNDERSTAND why my network times out "ps56k" <pschuman_no5pam_m3@interserv.com> - 2013-10-10 18:27 -0500
              Re: Frustrated that I don't UNDERSTAND why my network times out Thad Floryan <thad@thadlabs.com> - 2013-10-10 16:49 -0700
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 00:40 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Thomas Keusch <fwd+usenet-spam2013q4-1381456101@spam2013q4.bsd-solutions-duesseldorf.de> - 2013-10-11 01:50 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 03:24 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out dyrmak <dyrmak@orange.fr.invalid> - 2013-10-11 08:50 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 14:26 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-11 16:03 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 20:19 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-11 20:38 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2013-10-11 21:34 +0300
          Re: Frustrated that I don't UNDERSTAND why my network times out Chris Davies <chris-usenet@roaima.co.uk> - 2013-10-11 00:00 +0100
      Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 11:18 +0000
        Re: Frustrated that I don't UNDERSTAND why my network times out Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2013-10-09 15:16 +0300
          Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 17:41 +0000
            Re: Frustrated that I don't UNDERSTAND why my network times out Chris Davies <chris-usenet@roaima.co.uk> - 2013-10-09 19:22 +0100
              Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 21:18 +0000
            Re: Frustrated that I don't UNDERSTAND why my network times out Rick Jones <rick.jones2@hp.com> - 2013-10-09 20:44 +0000
              Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-09 21:46 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 00:39 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Rick Jones <rick.jones2@hp.com> - 2013-10-10 01:30 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 01:32 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2013-10-09 22:25 -0400
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 03:48 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-10 05:10 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out ein <ein@no.spam> - 2013-10-10 13:24 +0200
                Re: Frustrated that I don't UNDERSTAND why my network times out Chris Davies <chris-usenet@roaima.co.uk> - 2013-10-10 10:31 +0100
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-10 17:37 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Chris Davies <chris-usenet@roaima.co.uk> - 2013-10-11 00:01 +0100
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 20:21 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-10 21:04 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 01:18 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Chris Davies <chris-usenet@roaima.co.uk> - 2013-10-11 00:03 +0100
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 00:57 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 01:07 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Richard Kettlewell <rjk@greenend.org.uk> - 2013-10-11 08:56 +0100
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 00:47 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 00:58 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Rick Jones <rick.jones2@hp.com> - 2013-10-10 01:24 +0000
        Re: Frustrated that I don't UNDERSTAND why my network times out Bit Twister <BitTwister@mouse-potato.com> - 2013-10-09 12:23 +0000
        Re: Frustrated that I don't UNDERSTAND why my network times out Chris Davies <chris-usenet@roaima.co.uk> - 2013-10-09 19:27 +0100
          Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 21:21 +0000
            Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-09 21:47 +0000
    Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 10:43 +0000
    Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 10:51 +0000
      Re: Frustrated that I don't UNDERSTAND why my network times out nemesis <nemesis@home.it> - 2013-10-09 08:14 -0300
        Re: Frustrated that I don't UNDERSTAND why my network times out "p-0''0-h the cat (ES)" <super.pooh@furryfreeware.invalid> - 2013-10-09 12:24 +0100
          Re: Frustrated that I don't UNDERSTAND why my network times out nemesis <nemesis@home.it> - 2013-10-09 08:42 -0300
          Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 13:57 +0000
            Re: Frustrated that I don't UNDERSTAND why my network times out "p-0''0-h the cat (ES)" <super.pooh@furryfreeware.invalid> - 2013-10-09 15:09 +0100
        Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 11:27 +0000
          Re: Frustrated that I don't UNDERSTAND why my network times out nemesis <nemesis@home.it> - 2013-10-09 08:58 -0300
            Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 18:44 +0000
              Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-09 19:58 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 21:23 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-09 21:38 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Mike Easter <MikeE@ster.invalid> - 2013-10-09 16:14 -0700
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 00:30 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Mike Easter <MikeE@ster.invalid> - 2013-10-09 18:02 -0700
                Re: Frustrated that I don't UNDERSTAND why my network times out Rick Jones <rick.jones2@hp.com> - 2013-10-10 01:37 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-10 03:17 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 20:03 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 20:06 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-09 21:27 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-09 22:15 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-10 00:35 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out "p-0''0-h the cat (ES)" <super.pooh@furryfreeware.invalid> - 2013-10-10 09:15 +0100
          Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 01:40 +0000
            Re: Frustrated that I don't UNDERSTAND why my network times out nemesis <nemesis@home.it> - 2013-10-10 23:03 -0300
              Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 14:43 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out ~BD~ <~BD~@nomail.afraid.org> - 2013-10-11 16:11 +0100
            Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-11 04:11 +0000
              Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 04:19 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 04:25 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-11 04:45 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out ein <ein@no.spam> - 2013-10-11 08:06 +0200
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 14:32 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 14:41 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 14:48 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Richard Kettlewell <rjk@greenend.org.uk> - 2013-10-11 09:00 +0100
                Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 14:30 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out Rick Jones <rick.jones2@hp.com> - 2013-10-14 19:20 +0000
            Re: Frustrated that I don't UNDERSTAND why my network times out "p-0''0-h the cat (ES)" <super.pooh@furryfreeware.invalid> - 2013-10-11 10:17 +0100
              Re: Frustrated that I don't UNDERSTAND why my network times out billy <billy@is.invalid> - 2013-10-11 14:23 +0000
                Re: Frustrated that I don't UNDERSTAND why my network times out "p-0''0-h the cat (ES)" <super.pooh@furryfreeware.invalid> - 2013-10-11 22:46 +0100
            Re: Frustrated that I don't UNDERSTAND why my network times out Scott Hemphill <hemphill@hemphills.net> - 2013-10-14 16:47 -0400
      Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-09 16:17 +0000
  Re: Frustrated that I don't UNDERSTAND why my network times out "ps56k" <pschuman_no5pam_m3@interserv.com> - 2013-10-10 16:41 -0500
    Re: Frustrated that I don't UNDERSTAND why my network times out Mike Easter <MikeE@ster.invalid> - 2013-10-10 15:16 -0700
      Re: Frustrated that I don't UNDERSTAND why my network times out Mike Easter <MikeE@ster.invalid> - 2013-10-10 15:18 -0700
        Re: Frustrated that I don't UNDERSTAND why my network times out "ps56k" <pschuman_no5pam_m3@interserv.com> - 2013-10-13 14:34 -0500
          Re: Frustrated that I don't UNDERSTAND why my network times out Mike Easter <MikeE@ster.invalid> - 2013-10-13 14:27 -0700
            Re: Frustrated that I don't UNDERSTAND why my network times out "ps56k" <pschuman_no5pam_m3@interserv.com> - 2013-10-17 14:58 -0500
  Re: Frustrated that I don't UNDERSTAND why my network times out "petrus bitbyter" <petrus.bitbyter@hotmail.com> - 2013-10-11 22:17 +0200
  Re: Frustrated that I don't UNDERSTAND why my network times out "petrus bitbyter" <petrus.bitbyter@hotmail.com> - 2013-10-11 22:42 +0200
    Re: Frustrated that I don't UNDERSTAND why my network times out unruh <unruh@invalid.ca> - 2013-10-11 21:16 +0000
      Re: Frustrated that I don't UNDERSTAND why my network times out "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2013-10-11 18:15 -0400
      Re: Frustrated that I don't UNDERSTAND why my network times out "petrus bitbyter" <petrus.bitbyter@hotmail.com> - 2013-10-13 02:04 +0200

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