Author Topic: Avast Premier Firewall Blocking Local Network Access (192.168.x.xxx)  (Read 8819 times)

0 Members and 1 Guest are viewing this topic.

REDACTED

  • Guest
Since a recent Avast upgrade to Premier, the Avast firewall is blocking access to my 192.168.1.xxx addresses.   I can't access my network printer and my network server for backups.  After a day of debugging, I traced the problem to PORT SCAN DETECTION in advanced settings for the firewall being turned on.  If I tun it off everything runs normally.  This is new behavior. I am on Premier version 17.3.2291 (build 17.3.3443.0) and Windows 10 Version 1607 (build 14393.969).

Is anyone else seeing this.  I did a search and did not get any useful hits.
« Last Edit: April 11, 2017, 07:07:27 PM by bpsanborn »

Offline Pondus

  • Probably Bot
  • ****
  • Posts: 37506
  • Not a avast user
Re: Avast Premier Firewall Blocking Local Network Access (192.168.x.xxx)
« Reply #1 on: April 11, 2017, 07:05:58 PM »
Avast UI -> Protection -> Firewall -> Settings -> Advanced -> Uncheck "Enable automatic port scan detection"


Quote
Is anyone else seeing this.  I did a search and did not get any useful hits. 
There is a bug in port scan




« Last Edit: April 11, 2017, 07:08:20 PM by Pondus »

REDACTED

  • Guest
Re: Avast Premier Firewall Blocking Local Network Access (192.168.x.xxx)
« Reply #2 on: April 12, 2017, 01:20:50 AM »
Avast UI -> Protection -> Firewall -> Settings -> Advanced -> Uncheck "Enable automatic port scan detection"
There is a bug in port scan

Thank you for your reply!
I've noticed the same problem on my PC, but the firewall were blocking not only LAN IP-addresses, but some Internet sites.
After unchecking "Enable automatic port scan detection" the problem is solved.

I'm using Avast Internet Security, version 17.3.2291 (build 17.3.3443.0)
« Last Edit: April 12, 2017, 01:24:21 AM by yura3d »

REDACTED

  • Guest
Re: Avast Premier Firewall Blocking Local Network Access (192.168.x.xxx)
« Reply #3 on: April 15, 2017, 04:22:25 PM »
Thanks guys.  The turning off port scan works as a temporary fix.  I am also getting those alerts for programs trying to get to the internet...  that never happened before.  I'll look for the "allow automatic port scan" feature.  I did not see it under the premier version

Brian

Offline DavidR

  • Avast Überevangelist
  • Certainly Bot
  • *****
  • Posts: 88895
  • No support PMs thanks
Re: Avast Premier Firewall Blocking Local Network Access (192.168.x.xxx)
« Reply #4 on: April 15, 2017, 05:16:24 PM »
I it is in the firewall settings, see Reply #1 for the location.
Windows 10 Home 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 24.2.6105 (build 24.2.8918.824) UI 1.0.799/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

REDACTED

  • Guest
Re: Avast Premier Firewall Blocking Local Network Access (192.168.x.xxx)
« Reply #5 on: April 15, 2017, 09:05:13 PM »
I just had a crazy set of AVAST Premier buggy behavior after upgrading from 8 GB to 16 GB (Win 10 1607).  Avast went nuts blocking everything including my internet connection.  I had to uninstall Premier and fall back to Internet Security.  I have run AIS successfully for years... but back in mid-March I got talked into upgrading to premier.  I have had problems ever since.