Category Archives: Firefox

Posts, tutorials, and solutions covering Mozilla Firefox

Recover Browser Passwords

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Recover Browser Passwords KB ID 0001885

Problem

I use quite a lot of browsers, I use Microsoft Edge for work, Firefox for personal browsing, Opera when I need VPN protected browsing, and occasionally I also use Safari and Chrome.

All modern browsers will store usernames and password for you, but when you get a new device or start using a new browser, you may need to go and recover browser passwords (and possibly usernames) from your other browsers.

Disclaimer :I’m not a numpty, these are not my real usernames and passwords folks!

Recover Chrome Usernames and Passwords
Recover Firefox Usernames and Passwords
Recover Microsoft Edge Usernames and Passwords
Recover Opera Usernames and Passwords
Recover Safari Usernames and Passwords

Solution: Recover Browser Passwords (Chrome)

Settings > Autofill and Passwords > Google Password Manager.

Either browse the whole list, or search for the site you are looking for and select it.

You may need to authenticate (for obvious reasons) > Press Reveal, copy the username and password

Solution: Recover Browser Passwords (Firefox)

Type about:logins in the address bar > Search for the site you want to recover the credentials for > Select the site  >Reveal > Copy the username and password.

Solution: Recover Browser Passwords (Microsoft Edge)

Settings > Passwords.

Either browse the whole list, or search for the site you are looking for and select it.

Reveal > copy the username and password.

Solution: Recover Browser Passwords (Opera)

Settings > Search for passwords > Password Manger.

Locate and select the site you wish to recover credentials for and select it.

Reveal > copy the username and password.

Solution: Recover Browser Passwords (Safari)

Safari > Settings > Passwords > Authenticate.

Either browse the whole list, or search for the site you are looking for and select it.

Hover over the password to reveal > copy the username and password.

 

Those are the browsers I use, feel free to post methods for other bowsers below

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SSL_ERROR_UNSUPPORTED_VERSION

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SSL_ERROR_UNSUPPORTED_VERSION KB ID 0001856

Problem

I get it, older versions of TLS and SSL are insecure and we should not be using them. However I needed to get on an HPE Server iLO management interface last week and I

was met with this.

Firefox Error: SSL_ERROR_UNSUPPORTED_VERSION
Microsoft Edge, Chrome, and Opera Error: ERR_SSL_VERSION_OR_CIPHER_MISMATCH
Microsoft Internet Explorer Error: This might be because the site uses outdated or unsafe TLS security settings. If this keeps happening, try contacting the website’s owner. Your TLS security settings aren’t set to the defaults, which could also be causing this error.

Firefox Solution : SSL_ERROR_UNSUPPORTED_VERSION

I advise you just do this to get to the page you need to and set it back afterwards. In your browser windows enter about:config, Type TLS into the search bar and locate security.tls.version.min and change its value to 1, Then tick to save.

And now, I can get to where I want to go.

IE Solution : SSL_ERROR_UNSUPPORTED_VERSION

Yeah, I know Internet Explorer is supposed to be dead, but it’s still there and you can utilise it to solve this problem, from your internet options in IE > Advanced  > you can then enable TLS 1.1. and 1.2.

You will still get a warning but now you can click past it.

Related Articles, References, Credits, or External Links

ERR_CERT_WEAK_SIGNATURE_ALGORITHM

ERR_CERT_COMMON_NAME_INVALID

 

Software is Preventing Firefox From Safely Connecting to this Site

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KB ID 0001727

Problem

I was setting up some HTTPS/SSL inspection this week and while testing it, I ran into this problem;

Firefox Certificate Settings

So the machine I’m using DOES trust the CA that issued that certificate, (it’s a FortiGate firewall) But the BROWSER does not. (Firefox maintains its own list of certificates, and more importantly which CA certificates it will trust). Essentially the browser is trying to protect you from a MITM attack.

Browse to about:prefernces#privacy > Certificates  > View Certificates.

Import.

Navigate to the CA certificate for the authority that signed the certificate(s) you are having a problem with, and import it > Select ‘Trust this CA to identify websites” > OK

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Firefox: Cannot Open vCenter Web Client

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KB ID 0001482

Problem

I wonder how many hours Ive lost trying to get browsers to connect to things, and the browser has not been happy? This week I needed to connect to a vCenter (6.5) web console with Firefox and was greeted with this.

Your connection is not secure
The owner of {site} has configured their web site improperly. To protect information being stolen, Firefox has not connected to this website.
Error Code: , SEC_ERROR_UNKNOWN_ISSUER

Normally I use Firefox, because if there’s a problem I can simply add an exception and all is well, but this time there was no way to connect at all.

Solution

Browse to about:config, and then search for security.enterprise, set it to true.

Now it will work

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Firefox Error – SSL_ERROR_WEAK_SERVER_EPHEMERAL_DH_KEY

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KB ID 0001189 

Problem

Firefox is what I use when Opera does not work, so when I tried to connect to some management servers that did not support Opera this happened;

 

Secure Connection Failed
An error occurred during a connection to {FQDN). SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message. (Error code: SSL_ERROR_WEAK_SERVER_EPHEMERAL_DH_KEY)

 

Solution

Navigate to ‘about:config’ > I’ll be careful, I promise!

In the search bar type ssl3.dhe_rsa_aes_128_sha > change its value to false.

In the search bar type ssl3.dhe_rsa_aes_256_sha > change its value to false.

 

Related Articles, References, Credits, or External Links

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