(sorry for my english)
My browser (Firefox) recently started to act oddly. For example some sites are loading very long. I scanned all my files by online scanner (ESET), local antivirus (Avast). Some things were found and deleted, but the problem stil exists.
Then I run TCPView to check what exactly happens on my network. I found that there is IP address which is connected to my computer through Firefox port 80. Actually the packets are send from my computer to this IP address through port 80 but only when Firefox is opened and connected to some normal www sites.
No matter what site it is, Firefox always send packets to this IP. When I close Firefox, this connection (my computer -> unknown IP) is TIME_WAIT in TCPView.
Then I Deleted all my addons and widgets in Firefox, but nothing has changed.
Then i blocked this IP address (and all range) in Windows system Firewall. It helped and there is no connection anymore but i See in log than my computer is still wanting to make connections with this address.
I live in Poland and this iP is located in Poland too, belongs to private network, about 300km from my city.
Of course I know there is a lot of connections making through Firefox when I'm on the internet but usually I know that some are from antyvirus, some from the sites, cloudflare, google, widgets, etc, but this connection is always opened no matter site is on and I don;t know what it is.
Other browsers (chrome, opera) are ok, this problem is only with Firefox.
Thank you for reading this.
Edited by hamluis, 22 August 2017 - 01:47 PM.
Moved from Win 7 to Web Browsing/Email - Hamluis.