SIEM Vs Firewall: Why Do You Need a SIEM When You Already Have a Firewall?

SIEM Vs Firewall: Why Do You Need a SIEM When You Already Have a Firewall?

At this age time, cybercrime has become a commonplace. Corporate organizations should take action to ensure that their information system remains proof from cyber-attacks. That calls for efficient computer security systems. In that regard, organizations have two approaches that can help them safeguard their computer and information systems. This article discusses the reason why you need to bolster your IT platform using SIEM, despite having installed a Firewall. However, let’s first understand the difference between the two.

Firewall Vs. SIEM

As mentioned above, SIEM is an acronym that stands for security information and event management. It’s a cyber-security approach that combines both security management and event management. The function of a SIEM system is to organize relevant information traffic from different sources, detect any strange activities, and perform a corrective action. For example, if an information system has a queer deviation, the SIEM system has the capability of logging additional commands, trigger an alert, and create security controls to remedy the situation. Through bringing together data log, SIEM becomes an incredibly useful tool for providing centralized reporting, real-time incidence reporting, as well as detecting and stopping attacks.

On the flip side, a Firewall is a network security device or software that regulates information flow. It also allows or deters incoming and outgoing network information based on pre-set rules or commands. It provides information traffic integrity and authentication through a stateful inspection packet. Through the Firewall, an organization can inspect the state of connections, but it has some limitations.

Limitations of Firewall

  • A firewall is prone to breaches from cyber attackers who use modems to access internet network, allowing them to bypass the Firewall security.

  • Firewalls cannot restrict or regulate password policies, and an attacker may misuse passwords to access private information. The password is an essential factor since it outlines acceptable conduct and sets the consequences of noncompliance.

  • Firewall cannot protect against poor decisions or a lax security policy

Due to these limitations, creating a SIEM system seems apparent. Examples of SIEM systems include SOAR (security orchestration and automation response) and UEBA (user and entity behavior analytics). Currently, these systems perform their cyber security by using multiple, hierarchical collection agents to get information related to computer security. SIEMs are superior to Firewalls since they can also regulate traffic generated by Firewall and other applications such as antiviruses and intrusion prevention applications.

Benefits of Using SIEM

Identifying Potentially Undetectable Incidents

Most network hosts used for log security issues lack an incident detection feature, making them ineffective to pin-point deviations in information flow. SIEMs help with that as it has an inbuilt incident detection tool that identifies suspicious events. Additionally, a SIEM system can correct suspicious activities across multiple hosts and follow-up commands to ensure the situation is contained.

Efficient Incident Response

When IT managers configure and maintain SIEM systems, security tools can improve and bolster the efficiency of incident detection and handling. That saves time and money for companies. Mainly, SIEM helps in prevention of information deterioration.

Improved Compliance Detection

Without SIEMs, it would take a considerable amount of time to collect information and report any compliance issue because that would be a manual process. However, with a SIEM, organizations can perform compliance reporting by monitoring all logged in hosts and compiling compliance reports for each host in a centralized logging tool.

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