It uses DNS protocol with filtering ability.ĭNS filtering is faster than the Web Proxy because there is no need the web traffic to go through one point – web proxy. This is second method of content filtering. It is commonly used in organizations and companies to ensure that Internet usage conforms with their acceptable usage policy.Ĭontent-filtering web proxy servers provide, controls the content in both directions through the proxy. The Proxy server evaluates the request and sends to another server. Clients connect to proxy server, requesting some service, for example, web page. Web proxy server is an intermediate stop between a client’s request and other servers. With a Web Proxy server you can monitor and control content within your internal network. There are 2 ways to filter web content and control access to certain Web Pages in your organization: So, the DNS requests go from my clients to Google WiFi, and then from there two one of my RPis, and then from there (through HTTPS) to Google's DNS server on the internet (or one of the backups).Įdit to add: What this does mean is your DNS server can't tell what the source of any particular DNS request actually was, since they are all coming from 192.168.86.1 at that point.If you are thinking of finding a way to filter the web content your employees can access you may want to read on and get to know NxFilter. Those RPi units on my internal network are configured in my Google WiFi as the primary and secondary DNS servers, but then they are each configured to resolve through HTTPS via Google, Cloudflare, or Quad9 DNS. I use this setup to get all of my DNS traffic tunneled through DNS-over-HTTPS by running a couple of Raspberry Pi units with "cloudflared" installed. What will happen is all of the clients will still be configured to use the primary Google WiFi unit (typically 192.168.86.1) as the DNS server, but all of the requests that get sent there will then be forwarded to whatever DNS server(s) you have configured. Hello may not look like it, but it's actually working.
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