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Message-Id: <200307272311.h6RNBpMx017230@mail1.acecape.com>
From: "Matthew O. Persico" <persicom AT acedsl DOT com>
To: <cygwin AT cygwin DOT com>
CC: <wpmccormick AT covad DOT net>, <cygwin AT cygwin DOT com>
Date: Sun, 27 Jul 2003 19:11:56 -0400
In-Reply-To: <3F24047B.3070609@cygwin.com>
Subject: Re: Erroneous complaint about being unable to run emacs
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On Sun, 27 Jul 2003 12:57:31 -0400, Larry Hall wrote:
>Matthew O. Persico wrote:
>
>>On Sun, 27 Jul 2003 10:35:04 -0500, Bill McCormick wrote:
>>
>>>Martin Cohen Wrote:
>>>
>>>>The reason for this is that my McAfee firewall was
>>>>set (due to my mistake) to not allow emacs to access the
>>>>internat. This caused the failure above.
>>>>
>>>>I do not know why emacs (and other applications, such as
>>>>xclock) need to access the internet, but allowing them to
>>>>allows them to run.
>>>
>>>Emacs (and must programs X programs) use TCP/IP sockets to
>>>communicate to
>>>Xserver.
>>>
>>
>>
>>Agreed, but what really bugs me is this:
>>
>>Emacs has to use TCP/IP to look for an XServer, but the best it can
>>to is look at 127.0.0.1 and then $DISPLAY. Sooooo, assuming that
>>both are on the same machine, why is McAffee
>>detecting an attempt to get to the Internet? Shouldn't they both
>>resolve to the LAN? Unless McAffee/Norton and the ilk monitor the
>>TCP/IP stack and put up "messages" before the
>>destination is decoded, assuming the worst?
>
>
>Is this a rhetorical question?

No, I really don't know exactly what McAffee or Emacs do under the covers. I was just supposing based on observed behaviour outside of Cygwin.

>
>If not, you could debug Emacs to look for the answer, although I
>expect it
>comes down to the internals of Winsock.  But, if you can't find a
>good
>reason there, then it must be a McAffee issue.  Actually, you might
>want
>to start there anyway.  A review of their knowledge base might
>provide
>some insights.  If you do find that this is some wierd Cygwin issue,
>report it back to this list.
>


--
Matthew O. Persico




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