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What security implication is added by a VPN implementation on a network?
Tunneled data is easily intercepted
All of these
Tunneled data flows in clear text form
Firewall can't detect malicious traffic because traffic is encrypted
A firewall can't detect malicious traffic if it is transported within the encrypted VPN tunnel. [EDIT] Adding explanation. The tunneled data is encrypted and not tunneled in the clear, and because of that encryption, even if the data is intercepted, the attacker shouldn't be able to feasibly decrypt it. Thus, the correct answer is that malicious traffic cannot be detected by the firewall. Although, there is a known attack of storing intercepted and encrypted data and waiting until computing resources increase such that decryption is feasible (quantum computers, etc.).
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