Three Reasons Why A Firewall Won't Save You from DDoS Attacks

The case for DDoS managed mitigation and protection services is well established. By partnering with a provider who can monitor system performance, major IT issues can be resolved, staff resources can be increased, and the DDoS experience can be accessed. However, not all managed DDoS services are similar.

Needless to say, not all distributed denial of service protections (DDoS) are created equal. Whether it's a web application firewall (WAF), a content delivery network (CDN), or a traditional firewall, each "defense" has its own purpose, potential, and risk.

Can A Firewall Prevent Denial Of Service Attacks?

In recent years, a growing number of organizations are using firewalls to mitigate DDoS attacks. They argue that firewalls can be updated to provide protection against DDoS attacks. But the problem is that the firewall is not designed or built to withstand large-scale DDoS attacks.

It is important to know the capabilities of your firewall, not to be too technical. Firewalls provide perimeter access control by monitoring and tracking allowed network traffic flows. In many ways, firewalls act as traffic police for your network. This allows good packets to be processed unhindered and blocks bad packets from accessing the network.

Firewalls can help detect incoming DDoS attacks, but cannot prevent them. There are 3 reasons.

Firewalls Are Easily Overwhelmed And Useless
The bandwidth of firewalls (and other local hardware) is limited, including the size of the circuits that enter the company. Many organizations use 1-5 Gbps of bandwidth from their Internet Service Provider (ISP). However, since the average size of a DDoS attack is 6.63Gbps, its bandwidth is quickly overwhelmed and the attack continues unabated.

Firewall Rule Management
Managing firewall rules is a dangerous way to prevent DDoS attacks. This is because if the strike initially looks like legitimate network traffic (like a SYN flood), the firewall may be tricked. DDoS protection provides deep packet inspection and has specific measures to prevent all kinds of DDoS attacks, which is very different from static operation with traffic rules in the firewall. Firewalls should be considered an element of your defense strategy, not a complete solution.

Not All Target Assets Are Behind A Firewall
Websites on the perimeter network and applications and DNS services shared / provided with third-party platforms cannot be protected by a local firewall with updated rule sets. If the DNS DDoS attack is successful, there is no web presence or application availability. Needless to say, it is not good.

So what's going on?

Increasingly, industry experts recommend organizations to use comprehensive DDoS mitigation solutions that can provide cloud-based protection if attackers attempt to overwhelm existing local defenses. And as attackers change their tactics and continue to refine, relying solely on firewall solutions creates a dangerous proposition.

DDoS attacks are an unfortunate reality for companies today, stabbed in 84% of companies worldwide. DDoS attacks are no longer about whether a business is damaged, but when, how often, and for how long.