Firewall Best Practices to Adopt for securing Network
Network firewall is the most important security tool and should be as robust as possible. Configuring a network firewall can be a daunting task for administrators,
as it requires finding the perfect balance between user security and performance speed.
Network firewall configurations should not only be aimed at protecting against external security threats, but also against malware that could leak sensitive data
from the network to other locations. It is also important to protect network from potential future security threats, not just focusing on existing threats.
1. Block traffic by default and monitor user access
It is really useful to dam all visitors to the community by default. Allow only a few particular visitors to certain recognized services. This helps to manage over who can get right of entry to your community and stops any protection breaches from occurring. The firewall being your first layer of safety towards threats, anyone to everyone must not allow to regulate the configuration. User permission management is important to ensure only authorized administrators have right to alter firewall configurations. Apart from this, whenever a licensed administrator does alter any configuration, it ought to be recorded in the log for audits and compliance. Any unwarranted configuration adjustments can as a result be detected, and configuration restore can be carried out in this type of case.
2. Create a firewall configuration change plan
Firewall of network needs to be updated from time to time for a variety of reasons. This is necessary so that the firewall remain powerful and can protect against new threats. However, it is important to have a change management plan to keep the process running smoothly and safely. All unplanned configuration changes leave a gap in network security.
A well-defined and robust firewall change management plan should include certain basic features.
- Define the necessary changes and their goals.
- List the risks associated with policy changes, network impacts, and mitigation plans to minimize the risks.
- A well-defined change management workflow structure between different network teams.
- An appropriate audit trails that records who made changes, why, and when.
Software updates are often released on a regular basis by firewall suppliers. These upgrades make minor software modifications to address potential security issues. It is critical to keep your firewall software up to date in order to ensure that your network is secure and that your system is free of security flaws. You should check that your firewall software is up to date on a regular basis.
Instead of manually updating your firewall, you may automate the procedure. An automatic system can be set up to look for available updates and install them if one is found. This eliminates the need for human intervention and ensures that the firewall is always secure and reliable.
4. Conduct firewall security audits regularly
Security audits are required to guarantee that the firewall rules adhere to the network's corporate as well as external security regulations. Non-compliance can be caused by unauthorized firewall configuration changes that violate rules. Regular security audits by administrators and IT security personnel are critical to guarantee that no illegal changes have occurred.
This will also keep you informed about any necessary firewall adjustments and alert you to any potential risks posed by these changes. When a new firewall is installed, firewall migration is taking place, or mass configuration changes are being done on firewalls, security audits are critical.
5. Multi-vendor firewalls should have a centralized management tool.
To guarantee that all of your firewalls are working effectively, you should control them all from one location. A multi-vendor firewall administration solution gives you a uniform view of firewall policies and rules, making it simple to compare and manage firewall rules. Through this centralized administration tool, you can also do security auditing and reporting, solve configuration issues, and provide support with a gap analysis for firewall migration.
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