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Five steps to optimize your firewall configuration

Kyle Wickert, Lead Solution Architect of Product & Deployment, AlgoSec | Sept. 4, 2015
95 percent of all firewall breaches are caused by misconfiguration. Here's how to address the core problems

This scenario reduces security and creates more opportunities for attackers, as it’s easier for them to access the corporate network via the remote office. Enterprises should therefore ensure that any remote offices they have follow the same central authentication mechanism as the rest of the company.

* Use the right security controls for test data. Organizations tend to have good governance stating that test systems should not connect to production systems and collect production data, but this is often not enforced because the people who are working in testing see production data as the most accurate way to test. However, when you allow test systems to collect data from production, you’re likely to be bringing that data down into an environment with a lower level of security. That data could be highly sensitive, and it could also be subject to regulatory compliance. So if you do use production data in a test environment, make sure that you use the correct security controls required by the classification the data falls into.

* Always log security outputs. While logging properly can be expensive, the costs of being breached or not being able to trace the attack are far higher. Failing to store the log output from their security devices, or not doing so with enough granularity is one of the worst things you can do in terms of network security; not only will you not be alerted when you’re under attack, but you’ll have little or no traceability when you’re carrying out your post-breach investigation. By ensuring that all outputs from security devices are logged correctly organizations will not only save time and money further down the line but will also enhance security by being able to properly monitor what is happening on their networks.

Enterprises need to continuously monitor the state of their firewall security, but by following these simple steps businesses can avoid some of the core misconfigurations and improve their overall security posture.

 

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