What do the SSLv3 error messages mean on Firefox?

Firefox now blocks SSLv3 certificates to protect your information from attacks. SSLv3 (Security Sockets Layer version 3.0) is a type of technology that some websites use to connect to a server. SSLv3 is no longer secure, which makes it easy for hackers to extract your personal information during a connection. When you open a page that supports SSLv3, you will see this error message: "Unable to connect securely". You can still access that website by telling Firefox to use a more secure certificate such as TLS. Here's how to configure Firefox so it will connect using TLS instead of SSLv3: # Type ''about:config'' in your address bar and press {for win,linux}{key Enter}{/for}{for mac}{key return}{/for}. #*If you see the ''This might void your warranty'!' page, click {button I'll be careful, I promise!} to continue. # Find the ''security.tls.version.min'' preference by entering it into the search field. #;[[Image:sslv3 pref]] # Double-click to open the ''security.tls.version.min'' preference and change the setting to '''1'''. Click {button OK} to finish. #;[[Image:change sslv3]] # Refresh the webpage to load it using the secure certificate.

Firefox now blocks SSLv3 certificates to protect your information from attacks. SSLv3 (Security Sockets Layer version 3.0) is a type of technology that some websites use to connect to a server. SSLv3 is no longer secure, which makes it easy for hackers to extract your personal information during a connection.

When you open a page that supports SSLv3, you will see this error message: "Unable to connect securely". You can still access that website by telling Firefox to use a more secure certificate such as TLS.

Here's how to configure Firefox so it will connect using TLS instead of SSLv3:

1. Type about:config in your address bar and press Enterreturn.
   • If you see the This might void your warranty'!' page, click I'll be careful, I promise! to continue.
2. Find the security.tls.version.min preference by entering it into the search field.

   

3. Double-click to open the security.tls.version.min preference and change the setting to 1. Click OK to finish.

   

4. Refresh the webpage to load it using the secure certificate.