Getting Not Secure https on my home LAN

[Antonywayland]

Hi all every time I connect to my NAS via my home network Clients I am getting a warning that Your Connection is not private Attackers might be trying to steal your Information NET::ERR_ CERT_Authority_Invalid
I have to click to get past being an unsafe connection, when I get past that I am left with the URL message showing Not secure HTTPS in Red with lines through, And then I am able to use Video Station as normal from that computer.

Not sure if it's the browser settings I am on Brave Browser, But also affects Google Chrome as well, So believe it to be NAS-related.

Any ideas as to what is triggering this when it's on a home network? How can I stop this problem ?
Thanking you for your help..

 

[fredbert]

Do these provide any information?

Question - HTTPS - Connection is not secure

I have HTTPS running on a bunch of my internal systems, those systems are accessed by IP only. Firefox and other browser complain about "Connection not secure". I understand that the browser can't verify with it being in IP address. I'm accessing internal content via the LAN but I do VPN into...

www.synoforum.com

Solved - SSL Certificate for LAN

For several reasons I do not expose my Synology NAS DiskStation to the Internet and only run Photo Station for LAN users: URL: https://nas.lan/photo local IP segment: 192.168.0.10/24 When they connect, they all get a warning, that the connection is suspicious and the certificate is not valid...

www.synoforum.com

The chances are you are accessing the NAS using a domain/subdomain/IP address which is not included in the web server's SSL certificate. Either that or you are using a self-signed certificate. It's the web browser's way of say it cannot verify the web server.

 

[Robbie]

I've never understood the logic of browsers and systems flagging anything on the LAN private address space. It does little to enhance security and, if anything, sets a bad user habit of clicking through the warnings to access something on the LAN (ie OK) the same as something potentially bad on the WAN.

️

 

[Coop777]

I get that more with Chrome than any other browser...

 

[lu4t]

Hi all every time I connect to my NAS via my home network Clients I am getting a warning that Your Connection is not private Attackers might be trying to steal your Information NET::ERR_ CERT_Authority_Invalid
I have to click to get past being an unsafe connection, when I get past that I am left with the URL message showing Not secure HTTPS in Red with lines through, And then I am able to use Video Station as normal from that computer.

Not sure if it's the browser settings I am on Brave Browser, But also affects Google Chrome as well, So believe it to be NAS-related.

Any ideas as to what is triggering this when it's on a home network? How can I stop this problem ?
Thanking you for your help..

I don't see a reason to use https, if you're accessing your NAS from within your local network.
That said, if for whatever reason you want to, you need to load a valid (and trusted) certificate on your synology. If the browser shows you this warning, it's just because you're using a self signed cert (not trusted). There are many options, but typically Let's Encrypt is the way to go... google for tutorials on how to set it up on a synology...