Secure NAT Port Forwarding with Port Knocking TOTP Opening ports for remote access via NAT Port Forwarding is often necessary—but it increases security risk. DrayTek’s Port Knocking with TOTP (Time-based One-Time Passwords) provides an added layer of protection by keeping ports closed until authenticated access is requested. Supported models: Vigor3912S (fw 4.3.5.1) Vigor3910 / 2962 (fw 4.4.3) Vigor2927 / 2865 (fw 4.4.5.3) Vigor2136 / C510 / C410 (fw 5.3.2*) How it works: Enable TOTP authenticat
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Secure NAT Port Forwarding with Port Knocking TOTP Opening port…
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