Re: ISPs blocking your access to the Internet?

From: Barton L. Phillips (bartonphillips_at_sbcglobal.net)
Date: 08/26/05 

Date: Thu, 25 Aug 2005 22:37:23 GMT

lbrtchx@hotmail.com wrote:
> Hi *,
>
> I have had really odd problems with my access to the Internet. I am using
> knoppix with a disk-less box and if I go:
>
> root@1[knoppix]# /sbin/ifconfig
>
> and
>
> root@1[knoppix]# cat /etc/resolv.conf
>
> I can exactly see the right configuration in order to access the Internet.
>
> Moreover, if I run ethereal I can see the whole Internet traffic reaching
> my NIC, but I am still not able to even ping my gateway
>
> My ISP's tech support people tell me, after going through the basic
> troubleshooting steps; Internet access configuration, line test, etc., that
> they can't understand why this is happening. The odd thing about it is that
> I do have access to the net and all of a sudden I don't and my MAC address
> doesn't even appear on the network (Verizon's) cache
>
> Why do you think this is happening?
>
> How could I debug/study these issues in more detail? Are there commercial
> line-test hardware out there?
>
> I would like to use a piece of hardware and/or software based line-test
> device that would not interfere with my access to the internet
>
> How could I fix this type of problems?
>
> Thanks
>
Make sure you netmask is correct. I had a similar thing happen when a
customer fiddled with his router and screwed up the network mask. All of
a sudden she couldn't get a whole set of web sights that she use to. It
took some time to figure this one out.

Do you have a router between your PC and the Internet (ADSL or cable)?

Relevant Pages

  • Re: ISPs blocking your access to the Internet?
    ... Barton L. Phillips wrote: ... > customer fiddled with his router and screwed up the network mask. ... > Do you have a router between your PC and the Internet? ...
    (comp.os.linux.security)
  • ISPs blocking your access to the Internet?
    ... I have had really odd problems with my access to the Internet. ... I can exactly see the right configuration in order to access the Internet. ... line-test hardware out there? ...
    (comp.security.misc)
  • ISPs blocking your access to the Internet?
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    (comp.os.linux.security)
  • Re: Urgent! New router and big disaster
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    (microsoft.public.windows.server.sbs)
  • Re: Urgent! New router and big disaster
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    (microsoft.public.windows.server.sbs)