Firewall security measures are one of the most basic cyber protection tools that companies of all sizes can use to prevent data breaches and hacking. Network security firewalls filter incoming traffic to prevent malicious files from downloading and attackers accessing sensitive systems.
There are many types of firewalls that are used in modern security architectures. Unfortunately, cybercriminals are also very experienced in evading them. Many attackers know how to break a firewall and some insider threats can completely prevent them.
What are firewalls useful for when they can be hurt? When are firewalls not useful? How does firewall hacking work? What can you do to protect yourself from hackers and network firewall security threats?
How are firewalls useful to ensure network security?
As previously mentioned, network security firewalls are useful as filters for incoming network traffic. These firewalls are located on the edge of your network and scan incoming data packets for possible problems that could indicate a cyber threat. The way these firewalls search for malicious data packets depends on the type of firewall.
For example, a simple packet filter firewall could simply check basic target / source metadata for an incoming packet without looking at the contents of the packet. In the meantime, gateway firewalls at the line level can check the packet's protocol logs (again without checking the actual data in the packet). Deep-layer inspection firewalls check the contents of the data packet for malware and other problems. This is better for finding malware, but has a larger resource to match.
When installed as a perimeter filter in the network, firewall security tools of all kinds can be of crucial importance to prevent occasional attempts to attack. When installed on individual network security endpoints, firewalls can create strong internal segmentation that slows down attackers on the network (eg when internal attacks occur). Check here for more details on managed firewall service providers