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Host-Based Intrusion Detection System (HIDS)

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Web server security is one of the most crucial issues faced by SysAdmins and DevOps. Servers are targeted using techniques such as cross-site scripting (XSS) and SQL injection. Having a WAF (Web Application Firewall) helps in mitigating most of the commonly known attacks, but it is still not enough to keep track of any authorized and unauthorized activity in the system.

This is where Host Based Intrusion Detection System (HIDS) is required. HIDS is a system that monitors and analyzes the internals of an operating system. It might look at the state of a system; the stored information (RAM, file system, log files or elsewhere), check that the content of these appears as expected and configures properly. These systems provide a real-time view into activities on the servers.

Our 24/7 Network Engineers used OSSEC HIDS for many of our clients to perform log analysis, rootkit detection, integrity checking, Security Incident Management etc. Using real-time OSSEC alerts, our engineers were able to get insight into server activities and reacted to the situation accordingly. It also helped them to quickly identify serious incidents in order to satisfy their clients.

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