If the block is from your Internet Service Provider (e.g., for piracy sites or gambling) or your home router's parental controls, you need to change your DNS server.
By default, your ISP decides what you can see. Swapping to a public DNS like Cloudflare or Google bypasses many ISP-level blocks.
Whether you accidentally blocked a favorite site, need to access a page for work, or are dealing with restrictive network settings, Firefox offers several ways to bypass blocks.
Because "blocking" can happen at different levels (inside the browser, via security software, or through your network), follow these steps in order to identify and solve the specific issue.
Firefox has a built-in shield that blocks trackers, which sometimes accidentally blocks legitimate website content or entire pages.
Note: This turns off protection for that specific site only.
Firefox has a built-in proxy configuration tool. If your school or office uses a proxy to block sites, you can try a different proxy. However, for unblocking, you usually want to use a third-party proxy server.
If you see “Warning: Potential Security Risk Ahead” or “Deceptive Site Ahead”:
This starts Firefox with all extensions disabled and default settings.
This usually shows an error like “This site is blocked by your organization” or a custom block page.
Workarounds (only where legally allowed):
Use Tor Browser (based on Firefox) – Bypasses most network blocks, but much slower.