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Questions tagged [firefox]

Mozilla Firefox is a free and open source web browser descended from the Mozilla Application Suite.

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Internet access through SSH SOCKS5 proxy and CNTLM on the target

I have a Windows machine with remote access to a Debian machine for development. Both are behind a corporate proxy. On the Debian side cntlm is configured with authentication and used automatically ...
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Nginx Redirect from HTTP to HTTPS works in Firefox but not in Chrome

with my Nginx configuration (see below) redirecting from http to https works fine when accessing the page (http://example.com/) with Firefox. But for some strange reason it does not work with Chrome. ...
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Charles works as proxy but doesn't record http requests

I have installed latest version of Charles Web Proxy and use default proxy settings (port 8888) I have configured Mozilla Firefox to use this port locally for proxy My browser works through proxy as ...
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Why Firefox doesnt work with split DNS / Host Overrides?

I have configured Host overrides in pfSense and other browsers like Chrome and Edge work fine but Firefox simply does not resolve giving "Unable to connect" error. This is the same on my ...
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Set network.auth.use-sspi in Firefox with Group Policy

I have downloaded the Group Policy templates and copied them to the appropriate location. In gpedit.msc I have set: Computer Configuration > Administrative Templates > Mozilla > Firefox > ...
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How to make Firefox prompt for Windows's own certificate store's client certificates?

As per this blog post it should be possible: https://blog.mozilla.org/security/2020/04/14/expanding-client-certificates-in-firefox-75/ Yet when browsing a site which asks for a client certificate it ...
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Why does Firefox redirect my request to port 8080 to port 8000 instead?

I am trying to setup a Wordpress container using docker, solely on my internal LAN. When I launch the docker container with a port mapping of "8080:80" (which is what is recommended on the ...
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How do browsers cache PAC files?

How do browsers and other applications cache PAC files? If I'm serving a PAC file and update the configuration (e.g. add or remove a domain that should go through the proxy), when will different ...
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216 views

Debug client certificate authentification in Firefox

I'm having trouble determining why Firefox is not applying client certificate authentification in a particular situation. I have a self-signed client certificate issued for a specific site (nginx ...
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261 views

Maximum SSL certificate duration

Using openSSL, it looks like the maximum -days I can use is 11499 based on the conversation here. However, if I want to sign it by a certification authority, how long will be the maximum certification ...
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1 answer
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[Firefox and nginx]: Firefox seems to cache and deliver the content of the wrong subdomain

I'm currently running a mix of different services under different subdomains: a.example.com: Docker container behind nginx proxy b.example.com: nginx site c.example.com: Docker container behind nginx ...
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Troubleshooting SSL_ERROR_NO_CYPHER_OVERLAP in Firefox

I'm trying to get some assistance over on the Network Engineering Stack Exchange but they really want to blame the browser (see the comments there). I am looking for a fix that does not modify the ...
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340 views

Firefox does not accept self-signed wildcard certificate

I use a self-signed wildcard certificate. It is issued by our own CA and the CA Root certificate is installed in Firefox. Chrome is accepting it but Firefox not: Websites prove their identity via ...
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-2 votes
1 answer
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Does dnsmasq require www?

I have 2 Linux servers on my local network: An Nginx server, running a static website A newly installed dnsmasq server The Nginx web server has a static IP and I added it to the /etc/hosts file in ...
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Why does Firefox still make connections to server although the HTTP resources are shown as "cached"?

I am confused by the way Firefox shows loaded resources as cached but then I can see the browser issues new DNS query for the domain name and contact the HTTP server again. Below is a simple example ...
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1 answer
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Cannot open certain websites when SOCKS 5 DNS proxy is enabled on Firefox

Using the terminal, I run the following. ssh admin@1.2.3.4 -i ~/.ssh/admin -N -D 9090 Firefox is configured as follow. Many websites work just fine, but certain ones fails and the following error is ...
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1 answer
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Firefox user.js is not getting copied to profiles even though it is available under browser/defaults/profile

user.js is not getting copied to profile folder automatically. I have a file user.js in installed directory/browser/defaults/profile/user.js in version Mozilla Firefox 52.0.2 The same operation used ...
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2 answers
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Gcloud images page not displaying properly in firefox

Probably just me, but when I went to start our gcloud instance this morning the start/stop/edit icons disappeared when I tried to click on them. I'm using the web interface using firefox on Linux. ...
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Firefox loads https://cdn.jsdelivr.net/npm/vue/dist/vue.js once, but not a second time

A web app I am building seems to be broken in Firefox. It loads ok the first time, but not the second. I checked the console and I found I get an error message that says: Loading failed for the ...
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VM web console using Firefox causes duplicate characters, Chrome and IE do not have issue

We are using VCSA 6.7 with five esxi 6.7 hosts & multiple vms are are running inside the esxi hosts. We are facing "Double Typing" issue when we open vm & start typing using Mozila firefox (...
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362 views

Firefox addon uninstall through registry

I have installed a Firefox add-on by adding a key-value pair in the registry under the following path- Software\Policies\Mozilla\Firefox\Extensions\Install\1 = "https://addons.mozilla.org/firefox/...
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1 vote
2 answers
663 views

Transparent url redirection for https site

I'm hosting two new wordpress VM on my network. (on one computer) see this diagram on imgur I would like to access them by different url/domain name for example WP1.mydomain.com & WP2.mydomain....
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Unable to open Firefox and some other applications after switching to new NIS and NFS servers

We have just upgraded two servers providing a number of services to our network including NFS and NIS. User authentication is done by one server (serverA) and home directories and a number of shared ...
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How to add extensions to whitelist on firefox GPO

So I have tried all of the things that I could think of, I have used the suggested json that firefox have on their git hub found here: https://github.com/mozilla/policy-templates/blob/v1.9_release/...
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Firefox and Chrome headless mode not working on VPS (Ubuntu 18.04 LTS) with Python/Selenium

I am trying to get Chrome running in headless mode with Python, but for some reason I only get a blank page back no matter what website I try to read. Google Chrome: v77 Chromedriver: latest version ...
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Why is firefox connecting to these servers on startup? [closed]

When I startup Firefox without any webpage it connects to all these hosts: $ netstat -anp | grep ESTABLISHED tcp 0 0 [REDACTED]:56728 52.41.213.214:443 ESTABLISHED 28943/...
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FreeIPA 4.6.4 on CentOS 7 returns blank page on Firefox due to CSP

I have created a CentOS 7 droplet on DigitalOcean and installed and configured ipa-server 4.6.4 following DigitalOcean's how-to. Connecting from Firefox 67 gets a blank page; connecting from Chromium ...
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1 vote
1 answer
301 views

Pre-Configuring Firefox for users on a Citrix Desktop Environment

Is there a way to pre-configure firefox with the necessary bookmarks, configurations, and security settings for all users when they open it for the first time? If I could get a detailed guide or a ...
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Firefox ESR 60.07 GPO can't open about:policies

if I install the normal Firefox Version I can open the about:policies and everything looks fine but when I try this with the ESR Version, there is not such a module as policies. Can't find any of them ...
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1 vote
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267 views

Performance Profiling for Firefox on Terminal Server

I have a problem with high CPU load, caused by Firefox (60.6.2 ESR) sessions on a Windows Server 2016 Terminal Server I'm maintaining. However, in Windows Task manager, I can only see the firefox ...
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1 answer
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How to prevent Firefox extensions/add-ons from being disabled/uninstalled

I'd like to know if there is a way to prevent me or others from disabling or uninstalling Firefox extensions/add-ons (I'm on 66.0.3). (Am using Leechblock but I catch myself every so often just ...
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2 votes
1 answer
2k views

nginx 1.15.10 - TLSv1.3 doesn't get applied despite the config

nginx -V nginx version: nginx/1.15.10 built by gcc 6.3.0 20170516 (Debian 6.3.0-18+deb9u1) built with OpenSSL 1.1.0j 20 Nov 2018 (running with OpenSSL 1.1.1b 26 Feb 2019) TLS SNI support enabled ...
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3 votes
1 answer
376 views

Firefox periodically doesn't download CSS files from nginx server over HTTP2 with SSL

When I use Firefox to access one of my sites with a lot of CSS files, periodically, not all the CSS files are downloaded Looking in the Developer Control Panel in Firefox (F12), I see that, when the ...
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Firefox - Intranet SSL

I am running Firefox Quantum 65.0.1. I have an intranet site that I need to use SSL with. My SSL certificate works fine in Chrome and IE. I have access to the CSR, PEM, KEY, CERT, and P12 file for ...
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1 answer
6k views

Unable to access ilo using .Net or Java irc.exe.manifest did not succeed

iLO 3 - 1.80 When using the Remote Console, neither .NET nor Java using either IE or Firefox is working. When using .NET from IE or Firefox, I receive this error: PLATFORM VERSION INFO Windows ...
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1 vote
1 answer
3k views

Mozilla Firefox - SEC_ERROR_UNKNOWN_ISSUER - Let's encrypt certificate via Certbot - CentOS 7

I have installed Let's Encrypt's SSL certificate for my website using Certbot (CentOS 7). Every major web browser successfully makes https connection with my web server, except Mozilla Firefox. This ...
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4 votes
1 answer
6k views

Cannot add a self signed certificate in Firefox

I need to set up an IIS webserver that will be accessed by a small, finite number of users. I was considering using a self-signed certificate only, and manually installing it on the user's systems. ...
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ERR_SSL_VERSION_OR_CIPHER_MISMATCH with Chrome and Firefox

I have an ASP.NET application deployed in IIS on Windows Server 2012 R2, with an HTTPS binding configured. The SSL certificate is valid and up-to-date. When connecting to the web site from multiple ...
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1 vote
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Firefox no sound Windows Server 2016 RDS

No sound in Firefox version 57 and up in Windows Server 2016 Remote Desktop Services. Which means none of the users of RDS have sound when browsing with Firefox. Audio works, Google Chrome browser has ...
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1 answer
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Apache logs you off as soon as you load a PDF

We have an odd problem with an intranet. If a user views a PDF they get logged off. They all use Firefox PDF viewer. Apache 2.4.18 Ubuntu 16.04.3 LTS, Firefox 57.0.3 32 bit on Windows 7. ...
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Firefox ESR 52.5.2 Auto Enable Add-On

Is there a way to force a specific add-on to always be enabled? During certain software updates the add-on in question is automatically disabled (No idea why) and because this add-on is required to ...
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1 answer
1k views

Why does Firefox show SSL_ERROR_BAD_CERT_DOMAIN with a self-signed wildcard certificate, but other browsers do not?

I assigned a self signed wildcard certificate to an OpenWRT (LEDE) router LUCI (uHTTPd) system. The CA which signed this certificate got added to all browsers as trusted certificate authoritiy. It ...
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0 votes
1 answer
91 views

Empty page with Firefox (all OS) and Nginx

I don't understand why, but I only have an empty page with Firefox (iOS, MacOS X and Windows last versions) when I use the code below. The same code works perfectly with Safari and IE. Could you ...
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2 votes
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719 views

Delegation works on some browsers but not on others

I've been trying to make Kerberos delegation work across all browsers, but I'm having no luck. I'm running a Java web server on Linux and Windows. Firefox (64 bit) on Linux: Receive the ticket and ...
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1 answer
2k views

Disable SHA1 now Firefox won't work

I've been tasked to get our site into PCI compliance by disabling SHA1 on the server. I am accomplishing this by using IIS Crypto 2.0. We decided to also go with just TLS 1.2. the specific problem I ...
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2 votes
2 answers
6k views

How to install a Mozilla Firefox addon for all users on RDP server?

We have Windows 2008 RDP server with Mozilla Firefox 57.0.1 64 bit installed. How to install an addon for all users?
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How to get Google Cloud Shell within Firefox ESR 52.5.0 on CentOS6 to work reliably?

In a single browser window, Google Cloud Shell only lets me have one instance that is not corrupt. Screenshots explain. Is there something one can do using Firefox 57 Quantum on Windows 10 or ...
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1 answer
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How to install GTK3 on Amazon Linux?

I cannot install Firefox on my amazon linux machine. All articles I can google tells about GTK2 but how can I Install GTK3? Thank you.
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Add pulseaudio to Porteus kiosk 3.7.0 32 bit

I try to add pulseaudio-9.0-i586-1.xzm and firefox-56.0.1-i686-1.xzm modules to Porteus kiosk 3.7.0 32 bit. I need pulseaudio package, because starting from version 52 Firefox only produce sound via ...
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Firefox Certificate Authorities: Where is 'Google Internet Authority G2'?

I am checking my Firefox 'Certificate Manager' - I am unable to find this Google Certificate: serial#: ‎ 01 00 21 25 88 b0 fa 59 a7 77 ef 05 7b 66 27 df issuer: CN = GeoTrust Global CA/O = ...
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