<![CDATA[Opera VPN background NetBIOS traffic]]>Opera's VPN tries to send NetBIOS traffic on UDP port 137 by relaying it through the "System" application.

( C:\WINDOWS\system32\ntoskrnl.exe )

On some Windows platforms this triggers constant firewall alerts because NetBIOS traffic outside the LAN is not allowed by default. I have two questions for the developers:

  1. Is it really necessary for the Opera VPN to send NetBIOS traffic?

  2. Is it really necessary for Opera to use the OS kernel as proxy (which makes application control more difficult)

]]>https://forums.opera.com/topic/35368/opera-vpn-background-netbios-trafficRSS for NodeTue, 17 Mar 2026 00:45:32 GMTWed, 25 Sep 2019 07:10:45 GMT60<![CDATA[Reply to Opera VPN background NetBIOS traffic on Mon, 27 Jan 2020 18:01:52 GMT]]>Just found same thing, and I didn't allowed opera or it's garbage vpn to collect any data.

]]>https://forums.opera.com/post/197089https://forums.opera.com/post/197089Mon, 27 Jan 2020 18:01:52 GMT