What is one of the security levels in firewall architecture?

In firewall architecture, paired firewalls represent a notable security level by implementing two firewalls in tandem to enhance the overall security posture of a network. This approach allows for redundancy and can facilitate a more robust defense strategy. By using paired firewalls, an organization can implement various configurations such as active/passive or active/active setups. This ensures that if one firewall fails or is under attack, the other can continue to manage traffic, maintaining operational integrity and continuity.

The other options present different technologies or concepts that, while they enhance network security or performance in various ways, do not specifically represent a level of security within firewall architecture. For instance, Virtual Private Networks provide secure remote access but do not relate directly to the internal architecture of firewalls. Load balancers are used to distribute network or application traffic across multiple servers to ensure reliability and responsiveness, which isn’t a direct component of firewall security levels. Network traffic analyzers monitor and analyze traffic flows but do not define a security level as compared to the organized approach of employing paired firewalls.