The most critical systems, or the most sensitive information, must be protected with high-assurance solutions in order to obtain a high level of security. In some slightly more extreme cases, isolation or air-gap may be relevant, and then no network-based communication between the zones is allowed. Segmentation means that you have separate zones for your assets, but most often, you still allow some communication between these zones.

This means that by using zoning, one gathers assets with similar security level and security requirements in separate zones. A cyberattack can result in sensitive and/or critical systems being disrupted, knocked out or leak information. In today’s connected world, no system is stronger than its weakest link, and no critical information or system is secure if there is insufficient protection. Though a firewall strives to protect the network, a high assurance addition in terms of a Cross Domain Solution is also needed. However, if you need to transfer information to or from a security sensitive network a firewall should not be the only solution you chose to enhance your cybersecurity. It monitors and filters what packets enter the network, and which are blocked based on rule setups. What is a firewall and when is it not enough?Ī firewall is a device with the purpose to protect your network by only allowing certain traffic to enter it.

If you need to transfer information to or from a security sensitive network a firewall should not be the only solution you chose to enhance your cybersecurity.

Firewall in cyber security