Firefox certificate errors
Author: c | 2025-04-23
FireFox - Certificate errors. 10 posts Page 1 of 1. Bowlie 5StarLounger Posts: 1051 Joined:, Location: Confoederatio Helvetica. FireFox - Certificate errors. SSL Error on Firefox - A quick guide on various SSL Certificate errors on the most popular Firefox browser. Solve Firefox SSL Error in easy steps.
Firefox Certificate Errors - The certificate is not trusted - Possible
Approach works for any language. In both these examples, you'll scrape theScrapingBee home pageand extract all the h2 tags. It's a simple demo, but the most important part is that you'll use the proxy server you just created.The way you set the proxy server differs based on what library you're using. In this article, you'll see demos withSeleniumandScrapingBee.Use a Proxy Server with SeleniumTo use a proxy server with Selenium, create a directory to hold the project:mkdir proxy-demo && cd proxy-demoThen, install the selenium-webdriver library:npm install selenium-webdriverYou'll also need toinstall a driverfor the browser that you want to use. Download the appropriate driver and put it in yourPATHvariable. The following example uses Firefox, but make sure you change it to the driver you'd like to use.Create a file named selenium.js and write the following code:const webdriver = require('selenium-webdriver');const firefox = require('selenium-webdriver/firefox');const proxy = require('selenium-webdriver/proxy');const { Builder } = webdriver;(async function() { const options = new firefox.Options(); options.addArguments('--headless'); // Ignore SSL errors options.addArguments('--ignore-certificate-errors'); options.addArguments('--ignore-ssl-errors'); options.addArguments('--allow-running-insecure-content'); options.addArguments('--disable-web-security'); const driver = new Builder() .forBrowser('firefox') .setFirefoxOptions(options) .setProxy(proxy.manual({ https: 'localhost:80' })) .build(); await driver.get(' const headers = await driver.findElements(webdriver.By.css('h2')); headers.forEach(async (header) => { const text = await header.getText(); console.log(text); })})()Note the setProxy method. This method sets the proxy to localhost for HTTPS requests.Run the code with node selenium.js, and you should get a list of all h2 headers on the page:Render your web page as if it were a real browser.Render JavaScript to scrape any website.Rotate proxies tobypass rate limiting.Simple, transparent pricing.Developers are asking...Who are we?Contact usReady to get started?Use a Proxy with ScrapingBeeTo use a proxy with ScrapingBee, you'll need tocreate a free account. Once the account is created, copy the API key from thedashboard:To use the proxy server with ScrapingBee, you need to make it available over the internet because ScrapingBee needs to connect. FireFox - Certificate errors. 10 posts Page 1 of 1. Bowlie 5StarLounger Posts: 1051 Joined:, Location: Confoederatio Helvetica. FireFox - Certificate errors. SSL Error on Firefox - A quick guide on various SSL Certificate errors on the most popular Firefox browser. Solve Firefox SSL Error in easy steps. Are There Specific Settings In Firefox That Can Help Prevent Certificate Errors? Yes, Firefox has settings that can help prevent certificate errors. One way to do this is by enabling the Security.enterprise_roots.enabled preference in the Firefox configuration settings. This allows Firefox to trust certificates issued by your organization. NET::ERR_CERT_DATE_INVALID; SSL CERTIFICATE ERROR. All of these errors are at the root of issues encountered with the SSL certificate. Mozilla Firefox. Mozilla Whether you’re seeing an invalid certificate error, a certificate error, or other SSL-related issues, this post will help you get back to browsing securely. Common SSL Errors in Firefox. There are a few different SSL certificate errors you may encounter in Firefox, including: SEC_ERROR_UNKNOWN_ISSUER; SSL_ERROR_NO_CYPHER_OVERLAP Firefox Symbian App this is opera mini,interface moded to firefox,rename to jar.make this fullscreen via suite setting. Fix Certificate Errors Fix Certificate Errors Info Info Ratings Some of the most common SSL/TLS certificate errors you may encounter in Firefox include: SEC_ERROR_UNKNOWN_ISSUER – This means Firefox doesn’t trust the certificate I've found a solution to this that works for me. It's not perfect, but it seems good enough and should be much safer than globally disabling cert verification. Here's what I did:Install mitmproxyRun mitmdump --mode reverse:https:// --set ssl_insecure=trueThat lets me connect to and it'll serve up the website, but with the important distinction that mitmproxy uses a fixed root CA which I can trust in Firefox. Now when I restart the container and the cert is regenerated, it doesn't matter because mitmproxy ignores the upstream certificate errors and I've set Firefox to trust the mitmproxy root CA.The only remaining issue was that mitmproxy seems to choose a hostname for the end cert based on the container's hostname, so there was a mismatch between Firefox accessing and the hostname in the mitmproxy-generated cert. I'd have to tell Firefox to add an exception for the mismatch each time I restarted mitmproxy and it regenerated the end cert.I got around that by editing my hosts file to force to resolve to , and adding to the network.trr.excluded-domains list in about:config so that Firefox would use the IP specified in my hosts file for that domain. Now I can connect to and the hostname in the URI matches the hostname in the cert and everything is happy no matter how many times I restart mitmproxy or the container.It's a bit of a hack, but it works! I'd still be open to a more elegant solution if anyone can think of one.Comments
Approach works for any language. In both these examples, you'll scrape theScrapingBee home pageand extract all the h2 tags. It's a simple demo, but the most important part is that you'll use the proxy server you just created.The way you set the proxy server differs based on what library you're using. In this article, you'll see demos withSeleniumandScrapingBee.Use a Proxy Server with SeleniumTo use a proxy server with Selenium, create a directory to hold the project:mkdir proxy-demo && cd proxy-demoThen, install the selenium-webdriver library:npm install selenium-webdriverYou'll also need toinstall a driverfor the browser that you want to use. Download the appropriate driver and put it in yourPATHvariable. The following example uses Firefox, but make sure you change it to the driver you'd like to use.Create a file named selenium.js and write the following code:const webdriver = require('selenium-webdriver');const firefox = require('selenium-webdriver/firefox');const proxy = require('selenium-webdriver/proxy');const { Builder } = webdriver;(async function() { const options = new firefox.Options(); options.addArguments('--headless'); // Ignore SSL errors options.addArguments('--ignore-certificate-errors'); options.addArguments('--ignore-ssl-errors'); options.addArguments('--allow-running-insecure-content'); options.addArguments('--disable-web-security'); const driver = new Builder() .forBrowser('firefox') .setFirefoxOptions(options) .setProxy(proxy.manual({ https: 'localhost:80' })) .build(); await driver.get(' const headers = await driver.findElements(webdriver.By.css('h2')); headers.forEach(async (header) => { const text = await header.getText(); console.log(text); })})()Note the setProxy method. This method sets the proxy to localhost for HTTPS requests.Run the code with node selenium.js, and you should get a list of all h2 headers on the page:Render your web page as if it were a real browser.Render JavaScript to scrape any website.Rotate proxies tobypass rate limiting.Simple, transparent pricing.Developers are asking...Who are we?Contact usReady to get started?Use a Proxy with ScrapingBeeTo use a proxy with ScrapingBee, you'll need tocreate a free account. Once the account is created, copy the API key from thedashboard:To use the proxy server with ScrapingBee, you need to make it available over the internet because ScrapingBee needs to connect
2025-04-23I've found a solution to this that works for me. It's not perfect, but it seems good enough and should be much safer than globally disabling cert verification. Here's what I did:Install mitmproxyRun mitmdump --mode reverse:https:// --set ssl_insecure=trueThat lets me connect to and it'll serve up the website, but with the important distinction that mitmproxy uses a fixed root CA which I can trust in Firefox. Now when I restart the container and the cert is regenerated, it doesn't matter because mitmproxy ignores the upstream certificate errors and I've set Firefox to trust the mitmproxy root CA.The only remaining issue was that mitmproxy seems to choose a hostname for the end cert based on the container's hostname, so there was a mismatch between Firefox accessing and the hostname in the mitmproxy-generated cert. I'd have to tell Firefox to add an exception for the mismatch each time I restarted mitmproxy and it regenerated the end cert.I got around that by editing my hosts file to force to resolve to , and adding to the network.trr.excluded-domains list in about:config so that Firefox would use the IP specified in my hosts file for that domain. Now I can connect to and the hostname in the URI matches the hostname in the cert and everything is happy no matter how many times I restart mitmproxy or the container.It's a bit of a hack, but it works! I'd still be open to a more elegant solution if anyone can think of one.
2025-03-28Abstract: Having trouble with Remote Desktop certificate errors when connecting to your home computer while using a VPN? Learn how to resolve this issue when your computer is using a self-signed certificate. 2024-12-04 by Introduction This article focuses on resolving Remote Desktop (RDP) certificate errors on your home computer that uses a self-signed certificate. You will learn about self-signed certificates, why these errors occur, how to fix them, and what you can do to prevent these issues in the future. Understanding Remote Desktop Certificate ErrorsWhat are Remote Desktop Certificate Errors? Remote Desktop Certificate Errors occur when connecting to a remote system through RDP and the system doesn't recognize or trust the certificate installed for the remote computer. These certificate errors are typically related to self-signed certificates or ones belonging to an unknown certification authority. When do Certificate Errors Occur? As mentioned earlier, these errors usually occur when using a self-signed certificate for the RDP connection, commonly found when connecting to a home computer or a private network. Windows cannot validate the self-signed certificate, resulting in the display of a certificate error. Why are Remote Desktop Certificates Used? The RDP connection uses certificates for authentication purposes. Certificates serve as an identity for a computer or a device, allowing the remote computer to confirm the identity of the computer it is connecting to. Generally, trustworthy commercial certificate authorities are used when connecting to public or commercial RDP servers, but self-signed certificates are often appropriate for home environments and private networks. How to Fix Certificate ErrorsInstalling Trusted Certificate Authorities In cases where the self-signed certificate is generated by a certificate authority used in your organization, you might want to consider importing the CA (Certificate Authority) certificate chain to your computer to avoid certificate errors. Importing the Self-Signed Certificate If the certificate error persists
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