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Quad9 vs TCPBlock

A side-by-side look at Quad9 and TCPBlock. For an in-depth review of either product, follow the links below.

Quad9

Quad9

Security & Privacy

Quad9 is a free DNS resolution service that focuses on privacy and security. It blocks access to known malicious sites to protect users from threats.

dnsprivacysecurity
TCPBlock

TCPBlock

Security & Privacy

TCPBlock is a free firewall program that blocks unwanted connections and traffic to your computer. It monitors network traffic and uses predefined rules to detect and block malicious or unnecessary connections.

networktrafficconnectionsfirewallblock

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