Hello,
Which from tunneling protocol supported by Mikrotik Routeros is the most difficult to block using firewalls?
Gre, openvpn, pptp, sstp, l2tp/ipsec, gre, vpls?
Are you kidding? If you tie your ability to detect a protocol merely to a port then you are gravely mistaken.SSTP, since it works on TCP 443, same as HTTPS.
If you block TCP 443, then you block every internet website that uses HTTPS.Are you kidding? If you tie your ability to detect a protocol merely to a port then you are gravely mistaken.