Secure DNS, DNS over HTTPS

Open Firefox and type: about:config
filter with: network.trr.* and set the following values:
network.trr.mode value 3
network.trr.bootstrapAddress and set value as one ip from this page 'https://dns.google/query?name=mozilla.cloudflare-dns.com' (mine value is currently 104.16.249.249)
now open a new tab to this page ('https://www.cloudflare.com/ssl/encrypted-sni/') used to verify if everything is working. You should have all green except sni. To make all green you should
switch tab and go back to config page
change filter with: network.security.* and set:
network.security.esni.enabled value true
go back to previous tab and refresh. You should have all green.


If it's only a few domains you can add exceptions in about:config.
network.trr.excluded-domains = localhost,mythings.com



Phishing with Unicode Domains
network.IDN_show_punycode => true

test with https://www.xn--80ak6aa92e.com