DNS Content Filtering for Business

The online world is packed with unwelcome actors and dangers who will attempt to break into your databases in order to make some sort of personal gain at your cost. For this reason you should strongly consider added DNS content filtering to your cybersecurity measures.

It may be that they are trying to directly steal money from you, make off with some of the personal private data you have stored or simply to take over management of a trusted company email account so they can attack your valued business partners.

There are a number of ways that you can set up a DNS filter but the easiest to configure and manage is to use a DNS filter that requires no additional hardware purchases of software downloads.

Domain Name System filtering operates by preventing access to certain websites by looking up their IP addresses to review if it has been associated with hackers or cyber attacks in the past .

The DNS filter will review blacklists of recognized malicious websites, previous crawls of new websites and web pages, or web content will be monitored in real time if no investigation into it has taken place previously. Should the IP address be deemed dangerous or in contravention of your acceptable usage policies the web user will be shown a webpage to inform them why the site cannot be accessed.

The individual controlling the installation will opt to place it at router level, via your Internet Service Provider or using a web filtering service vendor. If using a web filtering provider, the DNS of your organization will have to be pointed to the service provider. Then, using a blacklist of malicious IP addresses, processing or URL requests will be depended on them being deemed as not malicious and in compliance with your acceptable use policies.

The service vendor will also carry out the categorization of websites in order for the DNS content filtering solution to be implemented in order to disable access to specific categories of webpages – pornography, child pornography, file sharing websites, betting, and game playing websites for example. Once a business formulates an acceptable usage policy (AUP) and provides it to the service provider, the AUP will be enforced. DNS filtering is a low-latency service so there will be next to no slowness in gaining access to websites that are not being blocked andt do not breach an organization’s acceptable Internet usage rules.

Sadly, there is no one DNS content filtering solution available that will prevent all malicious websites from being accessed. This is due to the fact that a website must first be deemed as malicious. If a hacker creates a previously new phishing website, there will be a time lag between the page being set up and it being discovered by filters and added to a blacklist. Despite this there is some solace in the fact that the filters will address the vast majority of spam traffic from known sources.

DNS content filtering aims to address your concern in relation to spam attacks and phishing lures.

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