Firefox certificate errors
Author: a | 2025-04-25
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
Troubleshooting SSL Certificate Errors in Firefox: A
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.FireFox - Certificate errors - Eileen's Lounge
Linux, and iOS. This version comes with tracking protection changes, extension changes, better dark mode support, security improvements, enterprise enhancements, and better developer support.With the release of Firefox 68, the other development branches of Firefox have also moved up a version. This brings Firefox Beta to version 69 and the Nightly builds to version 70.You can download Firefox 68 from the following links:Firefox 68 for Linux 64-bitBelow are the major changes in Firefox 68, but for those who wish to read the full change log, you can do so here.Changes in Tracking ProtectionWith this release, Mozilla has added Fingerprinting and Cryptominer blocking to the 'Strict' setting for the Content Blocking feature. These protections were previously only available in the 'Custom' setting.Firefox Extension ChangesMozilla has redesigned the about:addons page to include a variety of features. This includes a redesigned permissions page that let's you see exactly what permissions have been granted to an extension.In addition, the Get Add-ons section has been removed and replaced with a 'Recommendations' section that lists recommended extensions that have 'been thoroughly reviewed for security, usability and usefulness.'Finally, you can now report an extension by right-clicking on its icon and selecting 'Report Extension' or by selecting the same option in the about:addons screen.When you report the extension, you will be shown a screen asking that allows you to tell Mozilla the issues you are having with the extension.Windows BITS support for Firefox updatesAs part of a larger plan of separating the Firefox updates into a standalone app, Firefox has now made it possible to use Windows Background Intelligent Transfer Service (BITS) to download Firefox updates in the background.The benefit of using BITS is that if a download is interrupted, BITS can restart it where it left off at a later time. This makes it faster and use less bandwidth when downloading updates on slower or poor connections.Security ImprovementsThere have been no known security fixes with this release according to the Mozilla Security Advisories for Firefox page.There have, though, been some changes in Firefox that lend to increase security. This includes:'Local files can no longer access other files in the same directory.'When an HTTPS error caused by antivirus software is detected, Firefox will attempt to automatically fix it. This should fix a recurring issue where antivirus vendors who install their own certificates in order to scan encrypted web traffic cause certificate errors when using of Firefox.Camera and microphone access now require an HTTPS connection. This is an important security enhancement as previously bad actors could potentially sniff the web traffic and reconstruct the audio and video from the unencrypted HTTP connection.Dark Mode enhancements:Mozilla has added 'Blackout Shades' to the Firefox Reader View. This change makes even the sidebars. FireFox - Certificate errors. 10 posts Page 1 of 1. Bowlie 5StarLounger Posts: 1051 Joined:, Location: Confoederatio Helvetica. FireFox - Certificate errors.I received this weird certificate error on Firefox
Abstract: 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 persistsMozilla Firefox Most Common Certificate errors
Those categories. It is recommended to exclude the Online Banking and Health categories due to privacy concerns. Resolution for SonicOS 6.2 and BelowThe below resolution is for customers using SonicOS 6.2 and earlier firmware. For firewalls that are generation 6 and newer we suggest to upgrade to the latest general release of SonicOS 6.5 firmware.When accessing a website you get an error stating your connection is not secure.This is caused by not having the DPI-SSL resigning Certificate installed as a Trusted Root Certification Authority on this device.You need to download the SonicWall DPI SSL certificate from the appliance interface in DPI-SSL | Client SSL | CertificatesInternet Explorer/Chrome: Open Internet Explorer. Go to Tools | Internet Options, click the Content tab and click Certificates. Click the Trusted Root Certification Authorities tab and click Import. The Certificate Import Wizard will guide you through importing the certificateFirefox: Go to Tools | Options, click the Advanced tab and then the Certificates Tab. Select the Authorities tab, and click Import. Select the certificate file make sure the Trust this CA to identify websites check box is selected, and click OK.When accessing a website you get an error Secure Connection Failed(SEC_ERROR_INADEQUATE_KEY_USAGE)This is caused when the certificate used doesn't have resigning authority from your CA.This process can be automated in a Windows Domain Environment using Group Policy. You can see the following article: Distributing the Default SonicWall DPI-SSL CA certificate to client computers using Group PolicyCertificate Errors in Browsers - Self-signed certificateWhen Client DPI-SSL is enabled, accessing a few websites may cause the browser to display a certificate error. The specific error message could vary with different browsers. In Firefox it would show invalid security certificate and in Chrome the error message is Invalid Certificate Authority. In the certificate details, we would see the certificate is self-signed.This error occurs rarely with some websites. This error occurs when the server sends a certificate signed by a CA not in the SonicWall's certificate store forcing the SonicWall to re-sign the certificate as self-signed certificate.To resolve this issue, export the Root CA certificate of the website (either from a PC not intercepted by DPI-SSL or by disabling DPI-SSL temporarily) and import it into the SonicWall certificate store.This is done from System | Certificates | ImportBy default, when a server presents a certificate which cannot be verified by Client DPI-SSL because the Root CA is not present in its certificate store, it re-writes the certificate as a self-signed certificate. This default behavior of the SonicWall can be changed.Go to the diag page of the SonicWall by entering Under the DPI-SSL section, enable the option Block connections to sites with untrusted certificatesClick on Accept to save the change. CAUTION: This is not recommended. Client DPI-SSL and non-browser applicationsThere are certain applications which do not work when Client DPI-SSL is enabled though the SonicWall Client DPI-SSL CA certificate is imported into the certificate store. This is because such applications and/or websites do certificate pinning or SSL pinning. Certificate pinning is an extra checkFirefox Certificate Error - Windows macOS - Banyan
Even after accepting the certificate manually, you can manually import the self-signed certificate into your local machine's "Trusted Root Certification Authorities" store. 1. Open your local computer's Certificates Manager: Type "certlm.msc" in the Run dialog box (Win + R) and press Enter. 2. Navigate to Personal > Certificates: In the Certificates Manager window, navigate to Personal and expand the folder, then click on Certificates. 3. Export the certificate: Right-click on your remote machine's certificate from the list and select All Tasks > Export. 4. Follow the export wizard: In the export wizard, choose "Yes, export the private key" and save the certificate to your computer in a known location. 5. Import the certificate: Navigate to Trusted Root Certification Authorities > Certificates, then right-click and choose All Tasks > Import. 6. Follow the import wizard: In the import wizard, find the previously exported certificate and complete the process. Preventing Certificate ErrorsUse a Commercial Certificate Authority If you are running a public RDP server, use a certificate from a well-known certificate authority. This ensures Windows, and other operating systems, will trust the certificate by default, eliminating certificate errors. Setup Your Own PKI Infrastructure For organizations that cannot use a commercial CA, setting up your own Public Key Infrastructure (PKI) is a viable option—although it requires more effort and costs. Your Remote Desktop (RDP) Certificate Errors occur when connecting to a remote system, and the locally used computer does not recognize or trust the certificate installed for the remote computer. Errors commonly relate to self-signed certificates or certificates from untrusted certification authorities. You can fix Remote Desktop Certificate Errors by installing trusted certificate authorities, or by manually importing the self-signed certificate into the local machine's Trusted Root Certification Authorities store. Prevent certificate errors by using a commercial certificate authority or setting up yoursecurity - Firefox Certificate Error - Super User
Whether you want to include or exclude based on Content Filter categories. And then select those categories. It is recommended to exclude the Online Banking and Health categories due to privacy concerns. Resolution for SonicOS 6.5This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.When accessing a website you get an error stating your connection is not secure.This is caused by not having the DPI-SSL resigning Certificate installed as a Trusted Root Certification Authority on this device.You need to download the SonicWall DPI SSL certificate from the appliance interface in Manage | Deep Packet Inspection | SSL Client Deployment | CertificatesInternet Explorer/Chrome: Open Internet Explorer. Go to Tools | Internet Options, click the Content tab and click Certificates. Click the Trusted Root Certification Authorities tab and click Import. The Certificate Import Wizard will guide you through importing the certificateFirefox: Go to Tools | Options, click the Advanced tab and then the Certificates Tab. Select the Authorities tab, and click Import. Select the certificate file, make sure the Trust this CA to identify websites check box is selected, and click OK.When accessing a website you get an error Secure Connection Failed(SEC_ERROR_INADEQUATE_KEY_USAGE)This is caused when the certificate used doesn't have resigning authority from your CA.This process can be automated in a Windows Domain Environment using Group Policy. You can see the following article: Distributing the Default SonicWall DPI-SSL CA certificate to client computers using Group PolicyCertificate Errors in Browsers - Self-signed certificateWhen Client DPI-SSL is enabled, accessing a few websites may cause the browser to display a certificate error. The specific error message could vary with different browsers. In Firefox it would show invalid security certificate and in Chrome the error message is Invalid Certificate Authority. In the certificate details, we would see the certificate is self-signed.This error occurs rarely with some websites. This error occurs when the server sends a certificate signed by a CA not in the SonicWall's certificate store forcing the SonicWall to re-sign the certificate as self-signed certificate.To resolve this issue, export the Root CA certificate of the website (either from a PC not intercepted by DPI-SSL or by disabling DPI-SSL temporarily) and import it into the SonicWall certificate store.This is done from Manage | Appliance | Certificates By default, when a server presents a certificate which cannot be verified by Client DPI-SSL because the Root CA is not present in its certificate store, it re-writes the certificate as a self-signed certificate. This default behavior of the SonicWall can be changed.Go to the diag page of the SonicWall by entering Under the DPI-SSL section, enable the option Block connections to sites with untrusted certificates. Click on Accept to save the change. CAUTION: This is not recommended. Client DPI-SSL and non-browser applicationsThere are certain applications which do not work when Client DPI-SSL is enabled though the SonicWall Client DPI-SSL CA certificate is imported into the certificate store. This. 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.
Self-signed CA - Certificate - Firefox error
05/29/2023 873 People found this article helpful 528,758 ViewsDescription The following article provides in-depth troubleshooting for common DPI-SSL certificate related issues.Resolution Resolution for SonicOS 7.XThis release includes significant user interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. The below resolution is for customers using SonicOS 7.X firmware.When accessing a website you get an error stating your connection is not secure.This is caused by not having the DPI-SSL resigning Certificate installed as a Trusted Root Certification Authority on this device.You need to download the SonicWall DPI SSL certificate from the appliance interface in Policy | Deep Packet Inspection | SSL Client Deployment | Certificates Internet Explorer/Chrome: Open Internet Explorer. Go to Tools | Internet Options, click the Content tab and click Certificates. Click the Trusted Root Certification Authorities tab and click Import. The Certificate Import Wizard will guide you through importing the certificateFirefox: Go to Tools | Options, click the Advanced tab and then the Certificates Tab. Select the Authorities tab, and click Import. Select the certificate file, make sure the Trust this CA to identify websites check box is selected, and click OK.When accessing a website you get an error Secure Connection Failed(SEC_ERROR_INADEQUATE_KEY_USAGE)This is caused when the certificate used doesn't have resigning authority from your CA.This process can be automated in a Windows Domain Environment using Group Policy. You can see the following article: Distributing the Default SonicWall DPI-SSL CA certificate to client computers using Group PolicyCertificate Errors in Browsers - Self-signed certificateWhen Client DPI-SSL is enabled, accessing a few websites may cause the browser to display a certificate error. The specific error message could vary with different browsers. In Firefox it would show invalid security certificate and in Chrome the error message is Invalid Certificate Authority. In the certificate details, we would see the certificate is self-signed.This error occurs rarely with some websites. This error occurs when the server sends a certificate signed by a CA not in the SonicWall's certificate store forcing the SonicWall to re-sign the certificate as self-signed certificate.To resolve this issue, export the Root CA certificate of the website (either from a PC not intercepted by DPI-SSL or by disabling DPI-SSL temporarily) and import it into the SonicWall certificate store.This is done from Device | Settings | Certificates By default, when a server presents a certificate which cannot be verified by Client DPI-SSL because the Root CA is not present in its certificate store, it re-writes the certificate as a self-signed certificate. This default behavior of the SonicWall can be changed.Go to the diag page of the SonicWall. The Diag page can be reached by typing in the LAN IP of the SonicWall in the browser, with a IP/sonicui/7/m/mgmt/settings/diag at the end. . Under the DPI-SSL section, enable the option Block connections to sites with untrusted certificates. Click on Accept to save the change. CAUTION: This is not recommended. Client DPI-SSL and non-browser applicationsThere are certain applications which do not work when Client DPI-SSL is enabled thoughCertificate error in the Mozilla Firefox browser - IBM
For instance, if an element’s ID contains a dynamic number, we can use-WebElement dynamicElement = driver.findElement(By.xpath("//input[contains(@id, 'partialId that is static')]"));2. Using parent elements– Sometimes, we can locate a stable parent element and then navigate to the dynamic element within it.WebElement parentElement = driver.findElement(By.id("staticParentElementId"));WebElement dynamicElement = parentElement.findElement(By.tagName("button"));In case of web elements that appear with some delay on the web page, we can use different waits like – implicit wait, explicit wait (preferred as it has waits based on different expected conditions) and fluent wait.114. Explain the concept of parallel test execution in Selenium. What tools or frameworks can be used for parallel execution?Parallel test execution involves running multiple test cases simultaneously to save the test execution time. Tools and frameworks like TestNG, JUnit, and Selenium Grid can be used for parallel execution.115. How do you handle SSL certificate errors in Selenium?We can bypass SSL certificate errors by creating a custom ChromeOptions object and setting the --ignore-certificate-errors flag.116. Explain the concept of headless browsers in Selenium. In what situation can we use headless browsers?Headless browsers (e.g., Headless Chrome) offer faster test execution, lower resource consumption, and provide the ability to run tests on servers without a graphical interface. They are suitable for automated testing, web scraping, and continuous integration environments where GUI rendering is unnecessary.117. Can you discuss the best practices for writing maintainable and robust Selenium automation scripts?Best practices for writing robust test scripts include using a design pattern like – Page Object Model, implementing proper waits, keeping test data separate from test logic, using meaningful test case names, and regularly refactoring code to maintain readability and reliability.118. How do you handle synchronization issues in Selenium when dealing with asynchronous web applications?Asynchronous web applications can be challenging to automate due to delayed element loading. We can use explicit waits, ExpectedConditions, and custom wait conditions to handle synchronization issues. You may need to wait for elements to become clickable, visible, or have specific attributes/values before interacting with them.119. Explain how you would handle cross-browser testing using Selenium. What challenges can arise in this context?Cross-browser testing involves running tests on different browsers (e.g., Chrome, Firefox, Safari, Edge, etc) to ensure browser compatibility. Selenium Grid and WebDriver’s support for multiple browser drivers helps in cross-browser testing. The challenges in cross-browser testing include –Browser Diversity – Different browsers have distinct rendering engines (e.g., Chrome’s Blink, Firefox’s Gecko, Safari’s WebKit), leading to variations in how they display web content. At times, we have to write browser-specific code to handle different web elements.Browser Versions – Each browser frequently releases new versions with updates and improvements. So, we have to make sure that the test scripts work fine with the new version while also supporting the older versions.Platform. FireFox - Certificate errors. 10 posts Page 1 of 1. Bowlie 5StarLounger Posts: 1051 Joined:, Location: Confoederatio Helvetica. FireFox - Certificate errors.Certificate Errors on Firefox and Chrome - Atlassian Community
Certificate warning.Server name-mismatch error. If none of the hostnames listed on the certificate match the hostname provided by the client, a certificate error occurs. The mismatches typically occur from subdomain mismatches. For example, if the certificate lists mydomain.com but not www.domain.com, users that use the former receive a warning due to the mismatch error. Also, in the case of wildcard certificates, sub.subdomain.mydomain.com causes a name-mismatch error because the hostname doesn’t match the wildcard *.mydomain.com. Wildcard certificates can only support one level of subdomains. You can often prevent server name-mismatch errors by using Subject Alternate Name (SAN) SSL certificates, where you can list all of the possible hostnames from which your site redirects.Invalid certificate authority. The issuing authority vouches that the domain is valid, and the client can trust the connection. The client checks to see if the authority is on the client’s list of trusted sources, and if so, the client accepts the certificate. If the provider isn’t on the trusted authority list, the client issues a warning to the user.Server insufficient-intermediates errors. A root authority authorizes intermediate services to guarantee certificates, and the chain of intermediate services need to have certificates leading back to the guaranteeing root authority. If an error occurs in the chain of intermediate certificates to the root, the client doesn’t trust the certificate.Client errors. Issues on the client may cause a certificate to fail, such as incorrect client clocks and anti-virus software proxy problems.Network issues due to captive portals and missing TLS proxy roots can trigger browser warnings.Avoiding SSL certificate warningsWe’ve included in the six reasons above four server errors you can control and two errors you cannot control (numbers 5 and 6). Although the browser may help mitigate some errors such as name-mismatch (when possible), preventing the other errors require your diligent attention.Stop untrusted warnings due to expired SSL certificatesStaff changes and responsibilities shift communication channels can breakdown. Therefore, as a certificate’s expiration draws near, renewal emails go out, but to whom? With staff turnover, the reminders may go to an unmonitored account, go to someone that is no longer responsible for them, orComments
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
2025-04-05I'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.
2025-04-17Abstract: 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
2025-04-09Those categories. It is recommended to exclude the Online Banking and Health categories due to privacy concerns. Resolution for SonicOS 6.2 and BelowThe below resolution is for customers using SonicOS 6.2 and earlier firmware. For firewalls that are generation 6 and newer we suggest to upgrade to the latest general release of SonicOS 6.5 firmware.When accessing a website you get an error stating your connection is not secure.This is caused by not having the DPI-SSL resigning Certificate installed as a Trusted Root Certification Authority on this device.You need to download the SonicWall DPI SSL certificate from the appliance interface in DPI-SSL | Client SSL | CertificatesInternet Explorer/Chrome: Open Internet Explorer. Go to Tools | Internet Options, click the Content tab and click Certificates. Click the Trusted Root Certification Authorities tab and click Import. The Certificate Import Wizard will guide you through importing the certificateFirefox: Go to Tools | Options, click the Advanced tab and then the Certificates Tab. Select the Authorities tab, and click Import. Select the certificate file make sure the Trust this CA to identify websites check box is selected, and click OK.When accessing a website you get an error Secure Connection Failed(SEC_ERROR_INADEQUATE_KEY_USAGE)This is caused when the certificate used doesn't have resigning authority from your CA.This process can be automated in a Windows Domain Environment using Group Policy. You can see the following article: Distributing the Default SonicWall DPI-SSL CA certificate to client computers using Group PolicyCertificate Errors in Browsers - Self-signed certificateWhen Client DPI-SSL is enabled, accessing a few websites may cause the browser to display a certificate error. The specific error message could vary with different browsers. In Firefox it would show invalid security certificate and in Chrome the error message is Invalid Certificate Authority. In the certificate details, we would see the certificate is self-signed.This error occurs rarely with some websites. This error occurs when the server sends a certificate signed by a CA not in the SonicWall's certificate store forcing the SonicWall to re-sign the certificate as self-signed certificate.To resolve this issue, export the Root CA certificate of the website (either from a PC not intercepted by DPI-SSL or by disabling DPI-SSL temporarily) and import it into the SonicWall certificate store.This is done from System | Certificates | ImportBy default, when a server presents a certificate which cannot be verified by Client DPI-SSL because the Root CA is not present in its certificate store, it re-writes the certificate as a self-signed certificate. This default behavior of the SonicWall can be changed.Go to the diag page of the SonicWall by entering Under the DPI-SSL section, enable the option Block connections to sites with untrusted certificatesClick on Accept to save the change. CAUTION: This is not recommended. Client DPI-SSL and non-browser applicationsThere are certain applications which do not work when Client DPI-SSL is enabled though the SonicWall Client DPI-SSL CA certificate is imported into the certificate store. This is because such applications and/or websites do certificate pinning or SSL pinning. Certificate pinning is an extra check
2025-04-10Whether you want to include or exclude based on Content Filter categories. And then select those categories. It is recommended to exclude the Online Banking and Health categories due to privacy concerns. Resolution for SonicOS 6.5This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.When accessing a website you get an error stating your connection is not secure.This is caused by not having the DPI-SSL resigning Certificate installed as a Trusted Root Certification Authority on this device.You need to download the SonicWall DPI SSL certificate from the appliance interface in Manage | Deep Packet Inspection | SSL Client Deployment | CertificatesInternet Explorer/Chrome: Open Internet Explorer. Go to Tools | Internet Options, click the Content tab and click Certificates. Click the Trusted Root Certification Authorities tab and click Import. The Certificate Import Wizard will guide you through importing the certificateFirefox: Go to Tools | Options, click the Advanced tab and then the Certificates Tab. Select the Authorities tab, and click Import. Select the certificate file, make sure the Trust this CA to identify websites check box is selected, and click OK.When accessing a website you get an error Secure Connection Failed(SEC_ERROR_INADEQUATE_KEY_USAGE)This is caused when the certificate used doesn't have resigning authority from your CA.This process can be automated in a Windows Domain Environment using Group Policy. You can see the following article: Distributing the Default SonicWall DPI-SSL CA certificate to client computers using Group PolicyCertificate Errors in Browsers - Self-signed certificateWhen Client DPI-SSL is enabled, accessing a few websites may cause the browser to display a certificate error. The specific error message could vary with different browsers. In Firefox it would show invalid security certificate and in Chrome the error message is Invalid Certificate Authority. In the certificate details, we would see the certificate is self-signed.This error occurs rarely with some websites. This error occurs when the server sends a certificate signed by a CA not in the SonicWall's certificate store forcing the SonicWall to re-sign the certificate as self-signed certificate.To resolve this issue, export the Root CA certificate of the website (either from a PC not intercepted by DPI-SSL or by disabling DPI-SSL temporarily) and import it into the SonicWall certificate store.This is done from Manage | Appliance | Certificates By default, when a server presents a certificate which cannot be verified by Client DPI-SSL because the Root CA is not present in its certificate store, it re-writes the certificate as a self-signed certificate. This default behavior of the SonicWall can be changed.Go to the diag page of the SonicWall by entering Under the DPI-SSL section, enable the option Block connections to sites with untrusted certificates. Click on Accept to save the change. CAUTION: This is not recommended. Client DPI-SSL and non-browser applicationsThere are certain applications which do not work when Client DPI-SSL is enabled though the SonicWall Client DPI-SSL CA certificate is imported into the certificate store. This
2025-04-13