Proton
Empowering you to choose a better internet where privacy is the default. Protect yourself online with Proton Mail, Proton VPN, Proton Calendar, Proton Drive. Proton Pass and SimpleLogin.
Proton Mail is the world's largest secure email provider. Swiss, end-to-end encrypted, private, and free.
Proton VPN is the world’s only open-source, publicly audited, unlimited and free VPN. Swiss-based, no-ads, and no-logs.
Proton Calendar is the world's first end-to-end encrypted calendar that allows you to keep your life private.
Proton Drive is a free end-to-end encrypted cloud storage that allows you to securely backup and share your files. It's open source, publicly audited, and Swiss-based.
Proton Pass Proton Pass is a free and open-source password manager which brings a higher level of security with rigorous end-to-end encryption of all data (including usernames, URLs, notes, and more) and email alias support.
SimpleLogin lets you send and receive emails anonymously via easily-generated unique email aliases.
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I’d even say disabling ipv6 if you’re not using it is more secure. The less you expose, the better.
Came here to say this
DISABLE IPV6 AT YOUR ROUTER!
The last thing you need is a way for malware to directly access every device on your network, directly, with no NAT protection
Proton runs IPv6 6 through a nat and properly blocks incoming connections so that is not a problem here. Also while it isn't the default on all routers it is still entirely possible for the router to have a firewall on IPv6 connections so no incoming connections can connect to your devices unless you have allowed it.
I am not super knowledgeable about networking
But reading IPv6 routing rules led me to turn if off outright rather than be precise