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Distributed firewalls

Distributed firewalls

Distributed firewalls definition

Distributed firewalls are a network security solution that applies firewall policy to all devices in a network. Instead of being located at a single spot, distributed firewalls work across many points in the network. This allows for a more comprehensive and tailored security approach.

Distributed firewalls use software agents installed on each network device (servers, workstations, or individual hosts). They enforce the network’s security policy on all incoming and outgoing traffic at their specific location. The rules are centrally managed and can be updated in real time, allowing for immediate response to security threats.

See also: firewall, firewall rules

Features of distributed firewalls

  • Centralized management. Policies for distributed firewalls are typically managed from a central location. This allows for easier control and uniform policy application across the network.
  • Individual host protection. Each host has its own set of enforced firewall rules. This means that even if one device is compromised, the threat cannot spread across the network.
  • Real-time updates and monitoring. Security policies can be updated in real-time and applied across the network immediately. Besides, network activity can be always monitored for potential security threats.
  • Flexibility and scalability. As your network grows, you can add firewall agents to new devices. This makes distributed firewalls a scalable solution.

Use cases of distributed firewalls

  • Large enterprises. Distributed firewalls are particularly useful for large corporations with extensive network infrastructure. They can manage security across multiple departments or physical locations effectively.
  • Cloud computing. In cloud environments, resources are spread across various servers and locations. Distributed firewalls can provide scalable and flexible protection from various threats.
  • Internet service providers (ISPs). ISPs can use distributed firewalls to offer better security services to their customers and protect their own network.
  • Organizations with remote workers. For businesses with remote employees, distributed firewalls can ensure that each remote connection is secure and follows the company’s security policy.

Further reading

Ultimate digital security