enable e-mail 2F authentication
CLI part:
config system admin // ALTERNATIVE: config user local edit <username> set two-factor email set email-to <email@address.net> end
GUI part:
you can use your own secured server, setting is here:
System -> Settings -> Email Service
Settings which is requerd for DNS split tunneling on MAC OS
config vpn ssl web portal
edit "tunnel-access"
set dns-suffix omni-x.com
next
end