Am 11.10.2019 um 20:33 schrieb LMH:
Hello,

I had an odd thing happen today. I opened a cygwin terminal to do something and 
got a
firewall alert that mintty was attempting to inject network traffic. I did a
temporary deny because there is no reason for mintty to make a connection based 
on
what I was doing and I have never seen that alert before (or I would have a 
firewall
rule already). That alert doesn't say where the connection would be made to if 
the
injection was allowed.

This temporary block seemed to break my seamonkey connection. My firewall log 
is full
of entries about blocked connections for seamonkey and the reason given is
"restricted parent process c:\cygwin\bin\mintty". I did not launch seamonkey 
using
mintty, so I have no idea why the firewall would see mintty as the parent 
process.
All of the seamonkey attempted connections to my email server were also blocked 
for
the same reason. When I closed the terminal, everything  went back to normal.

It seems like mintty tried to inject some network traffic to the seamonkey 
process
and for some reason, blocking this injection caused the firewall to block all 
traffic
from seamonkey.

Why would mintty try to inject network traffic to another process at startup? 
If it
needed ot connect for some reason, why would mintty try to make that connection
through another application instead of just making the connection itself?
It does neither of that. Mintty only ever accesses the network if you open the Options dialog. It occasionally looks up the current mintty version for an indication that you could update (disable with CheckVersionUpdate=0), and it downloads contents if you drag a URL onto the Theme configuration field (also planned for the Bell Wave file) or click on the "Color Scheme Designer" button.
I deleted any firewall rules for mintty and started the terminal again, but 
that does
not reproduce the situation at the moment.
This, and the fact that your system claimed mintty to be the parent of Seamonkey, suggests that something is or was utterly broken on your system.

Thomas

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