How to Check Proxy & Firewall Settings in Chrome

Chrome has no proxy settings of its own. It pulls everything from your operating system's network configuration, so when a proxy stops working in Chrome, the cause is usually at the system level. Firewalls add another layer, since they can silently block proxy traffic if the IP, port, or protocol looks unfamiliar.

In this article, we'll explore how to check and fix proxy and firewall settings in Chrome.

How to Check Chrome's Proxy Settings

Since Chrome uses your OS's proxy configuration, open a new tab and go to chrome://settings/system, then click Open your computer's proxy settings.

On Windows:

1. Go to Settings
2. Click Network & Internet
3. Select Proxy

Here you can check whether Automatically detect settings or Use a proxy server is enabled, along with the address and port in use.

On Mac:

1. Open System Settings
2. Click Network, select your connection, then click Details
3. Open the Proxy tab to view enabled types like Web Proxy or SOCKS Proxy

A mismatched address or a leftover old configuration is usually why Chrome ignores a configured proxy.

Also Read: How to Scrape a Site That Requires a Login

How to Check Firewall Rules That Block Proxy Connections

Firewalls can block a working proxy by flagging outbound connections to unfamiliar ports as suspicious.

On Windows, open Windows Defender Firewall and click Allow an app or feature through Windows Defender Firewall. Make sure Chrome and your proxy client have both Private and Public boxes checked. For deeper checks, open Advanced Security settings and review Outbound Rules for blocked port ranges, since most proxies use standard HTTP and SOCKS ports.

On Mac:

1. Open System Settings
2. Click Network, then Firewall
3. Click Options and confirm Chrome is not listed under blocked apps

On a managed work or school network, proxy traffic may be blocked centrally, and the fix requires contacting the network administrator.

How to Test If Your Proxy Is Working in Chrome

The simplest test is checking whether your IP address changes when the proxy is active. Visit ipinfo, note the address, enable your proxy, then reload. If the IP stays the same, Chrome is not routing through the proxy.

For a direct test, run this outside the browser to confirm the proxy itself is responding:

import requests

proxy = {
    "http": "http://username:password@proxy_address:port",
    "https": "http://username:password@proxy_address:port"
\}

response = requests.get("https://ipinfo.io/json", proxies=proxy)
print(response.json())

A different IP confirms the proxy works, and the issue is Chrome-specific. A timeout or error points to bad credentials, a wrong address, or a firewall blocking the connection. If you're unsure about the address format, Proxy Formatter converts between IP:PORT formats.

Inside Chrome, chrome://net-export logs proxy resolution attempts, showing whether a misconfigured PAC script is bypassing the proxy entirely.

Still stuck? The proxy itself might be the issue. Proxyon offers residential proxies starting at $1.75/GB with no subscription, so you can test a reliable connection risk-free.

Also Read: Residential vs Datacenter Proxies

Final Thoughts

Most proxy issues in Chrome come down to three things: a misconfigured system proxy, a blocked port, or Chrome bypassing the proxy entirely. Check each in order, and you'll find the problem fast.