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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: winndb on May 13, 2014, 03:49:10 PM

Title: Avastui.exe is maintaining connection to Google.com on tcp ports 80 and 443(ssl)
Post by: winndb on May 13, 2014, 03:49:10 PM
5:42 AM 5/13/2014
Avastui.exe is making and maintaining tcp connections to google.com.
Ipnetinfo.log

       74.125.224.94   Succeed   USA - California   GOOGLE   Google Inc.   74.125.0.0   
74.125.255.255   Yes   Google Inc.   arin-contact@google.com   arin-contact@google.com   
+1-650-253-0000          lax17s02-in-f30.1e100.net.   

   74.125.224.102   Succeed   USA - California   GOOGLE   Google Inc.   74.125.0.0   
74.125.255.255   Yes   Google Inc.   arin-contact@google.com   arin-contact@google.com   
+1-650-253-0000          lax02s19-in-f6.1e100.net   

CPorts.Log

AvastUI.exe   1976   TCP   5766      192.168.1.64:5766   443   https   
       74.125.224.94:443   lax17s02-in-f30.1e100.net:443   Established   C:\Program Files\AVAST
Software\Avast\AvastUI.exe   avast! Antivirus   avast! Antivirus   9.0.2018.391   
AVAST Software   5/11/2014 11:27:34 PM   A   5/13/2014 5:13:49 AM   
C:\WINDOWS\system32\WINHTTP.dll      Statistics   

AvastUI.exe   1976   TCP   5764      192.168.1.64:5764   80   http   
      74.125.224.102:80   lax02s19-in-f6.1e100.net:80   Established   C:\Program Files\AVAST
Software\Avast\AvastUI.exe   avast! Antivirus   avast! Antivirus   9.0.2018.391   
AVAST Software   5/11/2014 11:27:34 PM   A   5/13/2014 5:13:49 AM   
C:\WINDOWS\system32\WININET.dll      Statistics
=========
I do not understand why Avast would need to connect to google on port 80 and ssl port 443. 
Can someone explain this? What information is being supplied to Google? No, I do not use the Google Chrome Browser.   

Title: Re: Avastui.exe is maintaining connection to Google.com on tcp ports 80 and 443(ssl)
Post by: Para-Noid on May 13, 2014, 05:03:28 PM
Port 80 is easy to understand. Are you logged-in to Google?
If you are that would explain port 443.
Title: Re: Avastui.exe is maintaining connection to Google.com on tcp ports 80 and 443(ssl)
Post by: schmidthouse on May 13, 2014, 05:57:32 PM
Port 80> http connections\
Port 443> https connections\
Title: Re: Avastui.exe is maintaining connection to Google.com on tcp ports 80 and 443(ssl)
Post by: Para-Noid on May 13, 2014, 08:17:59 PM
@ schmidthouse  Thanks for explaining what the ports are for. My bad.  :-[

Port 80 is used for non-encrypted internet connections.
Port 443 is for encrypted internet connections.

That said, if you are logged into your Google account (encrypted) and visit YouTube your
YouTube connection is also encrypted.  :)
Title: Re: Avastui.exe is maintaining connection to Google.com on tcp ports 80 and 443(ssl)
Post by: winndb on May 14, 2014, 01:06:45 PM
Thank you for the replies...you too schmidthouse.(chuckle)I know what the ports are. Me"newbie" not "newborn". :

I'm not logged into Google or Youtube. I have no Google pages or services in use at all. Google is not my search engine and it is not a search option on my home page. These connections are being made directly by the avastui while realtime shields are off. (If it were   a passthrough avast scanner connection it would be on port 12080). I am not using any safe-browsing options in my browser. In fact, these connections persist even when there is no browser active. I know they originate from Avastui.exe directly.
It just seems strange.  there must be a good reason for them.
Perhaps avast reports statistics to Google via the user interface?
well, so much for sluething. Just curious. ::)
Title: Re: Avastui.exe is maintaining connection to Google.com on tcp ports 80 and 443(ssl)
Post by: NoelC on May 14, 2014, 03:27:08 PM
For what it's worth, I'm watching Resource Monitor and I don't see connections from AvastUI to anything.

For me AvastSvc.exe shows occasional connections to addresses that reverse-resolve to AVAST Software a.s., which seems reasonable given the software's online update facilities.

Note that I don't use anything but the 3 shields and the software updater.

Personally, if I saw my system maintaining a connection with Google I'd be concerned that Google has infected me with something.  That's certainly their goal.

Something related to consider, which blocks trackers etc.:  http://winhelp2002.mvps.org/hosts.htm

Also if you see applications accessing servers by name that you'd rather they didn't access, nothing keeps you from adding additional lines to your hosts file.

-Noel
Title: Re: Avastui.exe is maintaining connection to Google.com on tcp ports 80 and 443(ssl)
Post by: Para-Noid on May 15, 2014, 12:27:59 AM
See http://forum.avast.com/index.php?topic=126470.msg950033#msg950033