Application denial-of-service attacks target Web servers and take advantage of software code flaws and exception handling. These types of attacks are common and difficult to defend against since most firewalls leave port 80 open and allow traffic to hit the backend Web applications.
Tips to stay secure: Make sure servers and applications stay up-to-date with security patches. Also, educate developers on the risks of sloppy code and leverage a Web Application Firewall (WAF) to protect against bad code and software vulnerabilities. In addition, you should be logging relevant data from all your business-critical applications.
Security tools to mitigate vulnerabilities
As long as there are vulnerable systems on the Web, there are going to be denial-of-service attacks. And, though some DoS attacks can be difficult to defend against, there are ways to mitigate your risks to these types of cyberattacks.
First and foremost, ensure you systems are up-to-date with the latest patches. Patch management is one of the most critical processes in vulnerability management. You need to apply the latest security patches and updates to operating systems and applications, as well as firmware updates for your network devices, including routers and firewalls.
Next, continuously monitor your systems and devices. Start by creating a baseline and then monitor how the network is behaving to identify anomalies. To do this successfully requires that you have a solution in place that is capable of monitoring and correlating log event data throughout your environment, and very importantly, reacting in real time. This is where Security Information and Event Management (SIEM) solutions come into play. Log management solutions centrally collect and correlate logs from network and security devices, application servers, databases, etc., to provide actionable intelligence and a holistic view of your IT infrastructure’s security.
Another important step is to ensure your firewalls and network devices are configured properly and that you have the appropriate rules and filters in place. Configuration and change management plays a vital role in protecting your network from unauthorized and erroneous changes that could leave your critical devices vulnerable.
Following these guidelines can go a long way in protecting your IT infrastructure and services. It’s much better to implement precautionary measures up front to prevent an attack than to try and recover after one has occurred.
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