DNS Filtering for Additional Protection of IT Systems

By Brett Powers • March 9, 2022

Phase one of securing your IT infrastructure should include protecting your endpoints and safeguarding your employees from phishing attempts. After you have implemented these controls, the next logical step is to launch a DNS filtering solution.

 

What is DNS filtering and why do you need it?

Domain name server (DNS) filtering is a tool that identifies malware and harmful content and then restricts access to the websites serving that potentially dangerous content. Issues could arise when users are accessing a new website and are mistakenly redirected to a different site, or when ad servers on a frequently visited site are compromised. 

 

Cisco Umbrella can help

Cisco Umbrella provides DNS filtering for security protection from these issues. This solution keeps a record of all the websites that are known to be malicious and prevents employees from accessing those sites. Default DNS services do not possess this capability. With many team members working from home these days without the protection of a traditional firewall, DNS filtering is particularly important. If Cisco Umbrella is installed on an endpoint, whether a laptop or other workstation, when that user tries to access something that is potentially harmful, it gets blocked.

 

If a phishing email is delivered with dangerous links, Cisco Umbrella can prevent people from accessing a site that has been redirected or that is going to try to deliver malicious payload. These threat actors also rely on something called ‘command and control’. If a team member downloads something to their computer that seems innocuous, the program will then reach out to the threat actor’s command and control server. Stopping those communications is another way that Cisco Umbrella can protect your endpoints, as it detects these queries in real time. 

 

When these outside agents reach out to compromise your IT systems, be prepared. Partner with CyberSheath and enlist the assistance of our 24/7/365 security operations center, where we monitor this traffic and flag any suspicious activity. Our skilled team can also setup and configure Cisco Umbrella. Contact us today to get started.

 

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