What Port/Prgrm to open for Defender and Windows Update

  • Thread starter Thread starter Pit
  • Start date Start date
P

Pit

Hi there,

I have my (windows) firewall configured to block outgoing traffic except
for given rules that are in place. Works perfect and blocks unwanted
incoming and outgoing traffic alike.

The problem is that from activating the firewall neither Windows
Defender updates nor Windows Update are working anymore. On the one hand
this is proof that the firewall works but these comm is wanted.

I did not find any hints in the internet what prog and/or port has to be
allowed for outginig traffic to get this to working again.

Any ideas here?

Pit
 
Engel said:
For Windows Defender, Ports 80 and 443, same as the ones needed to do Windows
Updates.
-
Click to expand...

Thanks for the hint, will try this. But best would be to configure not
just a port but also the prog. Otherwise trojans could use the
unspecific opened ports to send informations home.

Do you know what exe does the updates?

Pit
 
Pit said:
Thanks for the hint, will try this. But best would be to configure not
just a port but also the prog. Otherwise trojans could use the
unspecific opened ports to send informations home.
Click to expand...

Now I found the solution. The process used is svchost.exe. For this prog
both of the ports have to be opened. After that all works fine. You'll
get a warning when defining rules against svchost.exe but this warning
can be ignored.

Pit
 
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