When it comes to network activity, DNS is everywhere.
From a user browsing a website, applications connecting to an online service, IoT devices contacting the cloud - communication usually initiates with a DNS request.
Which not only makes DNS a critical component of connectivity, it is increasingly crucial to security - of users, devices, data and more.
As an example, Malware will use DNS through its lifecycle, from infecting clients when they visit a malicious site, when connecting to its Command-and-Control server, and then using DNS as a communications channel.
DNS security is a crucial part of any Defence-in-Depth or Layered Security strategy. DNS query traffic can be monitored, reported on and, importantly, changed or blocked. Ways of doing this may include:
Blocking DNS queries to Malware and Phishing domains
Content Policy Filters
Response Policy Zones
Allow/Blocklists
Multiple layers of security products are going to improve your protection, but ensure they use distinct threat feeds.
If you are trying to protect your business from Malware and other threats but aren't sure about the best way to use DNS for this, then give me a call.
Perhaps you have a question about how to integrate a solution into your existing network and also protect remote workers. Or maybe you want advice on deploying a new service. Let me know, and I'll help out.
I've deployed and used commercial and open-source DNS products in many organisations, always with security in mind to protect businesses and users.
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