Which features is Windows 10 Defender Firewall blocking that Opera wants to do?
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poopbuyer last edited by
@burnout426 It happens for me most of the times I launch opera. The start website is ebay. It does not happen every single time. This occurs I think on two computers. The site is allowed in windows firewall.
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donq last edited by
@leocg said in Which features is Windows 10 Defender Firewall blocking that Opera wants to do?:
What are those incoming connections that triggers the firewall alert pop-up?
That is yet to be determinate and can be a lot of things. And it's something normal. needed for web to work.
Sorry, incoming connections to web browsers are in no way normal and are not needed for web to work.
It could be possible (although not likely) that some Opera components connect to each other - I have seen such behavior in some programs; this would be legitimate behavior, able to trigger firewall notificatons.
All my Opera instances sit behind NAT or similar devices (eg home routers) and incoming connections are plain impossible - everything is working without them nicely. No firewall prompts either.
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burnout426 Volunteer last edited by
@poopbuyer said in Which features is Windows 10 Defender Firewall blocking that Opera wants to do?:
It happens for me most of the times I launch opera. The start website is ebay.
Ebay does indeed trigger it for me in Chrome, Vivaldi and Opera. I can make them both not trigger it if I enable Opera's adblocker and tracking protection and have uBlock Origin enabled in Chrome. I'm looking at the net log for Opera to try and find out what tracking/ad site URL Ebay loads that triggers it. But, I haven't had any luck yet.
I can't seem to get Firefox to trigger it, even with all tracking protection off.
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donq last edited by
@burnout426
Are you behind some kind of router or directly connected to net?
You can look at connections in cmd prompt (netstat -anband/ornetstat -anb) - if you are able to parse that output
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leocg Moderator Volunteer last edited by
@burnout426 Here Ebay triggered the firewall dialog on Vivaldi but not on Chrome Canary.
And later I went to Ebay again, after have cleaned the rule on the firewall, and that time it didn't trigger the incoming connection pop-up. -
donq last edited by donq
Well, after some googling it looks like not incoming connection from outside world, but mDNS service (UDP 5353), allowing to discover some kind of devices (like network printers and chromecast) in your local network. I have not found any other explanation yet. Why ebay does trigger it - no idea.
In Chrome this can be switced off by disabling setting "Show notifications when new printers are detected on the network".
Opera seems not to include any mDNS (also called Avahi, ZeroConf, Bonjour) related settings or flags.Edit: This behavior can be related to some kind of notifications. I have (desktop) notications disabled here and no firewall prompts; in other place I did enable notifications (to see MS Teams activity) and I recall that I have seen there some firewall prompts afterwards. I correlated them with switching between various VPN networks, but actually they could be have triggered by (first) notifications (after Opera update) also.
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jHl last edited by
Hi,
I found this discussion while searching for an answer to the same "problem". On my pc, this warning Only pops up while clicking on my LinkedIn bookmark. However, it doesn't pop up every time I go to LinkedIn, perhaps a couple of times per month. Have not yet tried any of the suggestions mentioned here. -
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burnout426 Volunteer last edited by
The warning comes up for me when first using the Discord web page app to video chat (if there aren't any entries in the firewall rules for that Opera already). In this specific case, I'm sure it's for WebRTC.
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opedara last edited by
@leocg said in Which features is Windows 10 Defender Firewall blocking that Opera wants to do?:
@jhl As expected.
I'm hoping everyone realizes that this is not a good thing, completely unnecessary, and should never happen.
The user can't see what exactly it's trying to access, and shouldn't have to go through a long technical forum thread to try to understand it or resolve it.
No other apps I open do this. It's a security concern. Opera developers need to fix it. We shouldn't have concern randomly opening the app that it needs a firewall port opened for some unspecified reason.
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geophoenix last edited by
@leocg Perhaps by virtue of being Moderator here you might consider providing actual & actionable information in regards to this and other questions rather than deflecting blame/responsibility? I just had the same defender pop up warning just hours after opera updated.
So again, Exactly what opera functions are triggering this warning? If you're unable to provide useful information, the smartest action any of us can take is to discontinue using opera.
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opedara last edited by leocg
@geophoenix Who had useful information? mathewab786? Why was his post deleted?
This Really looks fishy now. I thought it did before, but now...
What's going on, Opera developers?
I feel like they're trying to spy on us or collect information through our firewall in a way that should remain blocked.
I'll continue blocking it until I see adequate information for what exactly they want and why it needs to be there. Since no other browser I use does this, I see no reason for Opera to need to do it too. This is creepy AF.
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opedara last edited by
@leocg So you're saying the other browsers add entries to my firewall but Opera doesn't?
Which entries do you mean?
If Opera needs something through the firewall, and it doesn't add the entry to the firewall, but other browsers do, why doesn't Opera add its entries to the firewall?
Which entries does Opera want to use, anyway? What exactly does it want to do through these entries? Why does it operate perfectly fine without me needing to manually enable firewall entries? I'm still seeing nothing showing that it's not a security risk.
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