Re: Bizarre Internet Connectivity
- From: Chuck <none@xxxxxxxxxxx>
- Date: 19 Jul 2005 01:29:02 -0500
On 18 Jul 2005 21:52:39 -0700, bwilde@xxxxxxxxx wrote:
>Chuck,
>
>Thanks for your email. I went ahead and looked at both of your
>suggestions, and neither of them seemed to help. I have been doing a
>little more diagnosis to figure out the problem, and here's what I've
>come across...
>
>Every once-in-a-while, when I restart my computer, I find that things
>work with no problems. More often, I find that MSN Messenger (which
>signs on at startup) is able to start, but that I can not sign off then
>log on again. This suggests that I may have some sort of nasty service
>running on my computer that prevents certain connections, and that
>sometimes, Messenger gets started before this mysterious program runs.
>
>With this in mind, I threw a ton of antivirus and spyware stuff at it.
>(AdAware, SpyBot, Microsoft AntiSpyware, Norton, PandaSoftware), and
>nothing turned up anything more than some tracker cookies.
>
>So, I have no idea where to go from here. Here's another quick summary
>of network programs that I have found work and don't work:
>
>Work: AIM, IExplorer, Firefox, Netscape, Remote Desktop host
>Don't work: MSN Messenger, Outlook, Remote Desktop client, FTP Server,
>Symantec Live Update, and most other programs that require a connection
>to the internet (like Windows Update).
>
>Any help from anybody would be very appreciated. I am getting
>frustrated with things.
>
>Thanks,
>Ben
Ben,
Most of the time, a "now it works, now it doesn't" scenario can be traced to a
problem with either an LSP / Winsock problem, or an MTU setting problem. But
neither is a magic wand, and if the problem isn't there, then those solutions
are useless. Unfortunately, neither solution is an instant fix either - both
you have to persistently retry. And there's no diagnostic tool to tell you,
before hand, that either will be useful. You just have to look at the symptoms,
and if the symptoms match, you try the solution, repeatedly, til it produces
results.
So if neither solution applies in your case, it would be useless for you to
continue. However, if either solution is applicable, you try once and give up,
and go on looking for other solutions, then you're wasting your time too.
Now looking at the third scenario considered - malware, I see that you listed
AA, SSD, MSAS, NAV, and PAV. All of those are good products, but neither is
100% effective in diagnosing all malware. And together, I wouldn't say you have
a 100% effective suite either. The ultimate, and essential, product is
HijackThis and expert advice.
<http://nitecruzr.blogspot.com/2005/05/dealing-with-malware-adware-spyware.html#DownloadSoftware>
On the other hand, maybe the problem does lie elsewhere. So what's different
about the products that work - and those that don't? Do the ones that work,
work 100% of the time? Do the ones that don't work, not work 100% of the time?
They all have other differences too.
# Content of data transmitted and received.
# Protocol / port used to send and receive.
# Destination server.
>From your problem description, I gather that you have 1 computer, and a router.
To isolate the problem, it would help a bit if you could test from more than 1
computer. Do you have any friends who would be likely to say carry a laptop
over to your network, and see if MSN Messenger, Outlook, Remote Desktop client,
FTP Server, etc work for them?
Short of that, can you install a packet monitor / sniffer like Ethereal, or a
firewall log like Wallwatcher, and see just what is getting to, and thru, the
router? What make and model router is it?
<http://www.wallwatcher.com/>
You call this your "new computer". Is there an old computer? Is it still
connected? Can you test from it? When did you get the new computer? Has it
ever worked?
Maybe something above will make you think. Or maybe the answers you can provide
will make me think. Just don't be expecting an instant solution - you might get
one, but don't get discouraged if you don't.
--
Cheers,
Chuck, MS-MVP [Windows - Networking]
http://nitecruzr.blogspot.com/
Paranoia is not a problem, when it's a normal response from experience.
My email is AT DOT
actual address pchuck mvps org.
.
- References:
- Bizarre Internet Connectivity
- From: bwilde
- Re: Bizarre Internet Connectivity
- From: Chuck
- Re: Bizarre Internet Connectivity
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- Bizarre Internet Connectivity
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