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What do the SSLv3 error messages mean on Firefox?
Revision 149587:
Revision 149587 by michro on
Revision 149798:
Revision 149798 by AliceWyman on
Keywords:
security
security
Search results summary:
When accessing a site with SSLv3, Firefox will block it and display an "Unable to connect securely" message.
When accessing a site with SSLv3, Firefox will block it and display an "Unable to connect securely" message.
Content:
Starting with Firefox version 34, Firefox blocks Secure Sockets Layer version 3.0 (SSLv3) to protect your information from attacks. SSLv3 is a type of technology that some websites use to connect to a server. It is no longer secure, which makes it easy for hackers to extract your personal information during a connection. For more information, see [https://blog.mozilla.org/security/2014/10/14/the-poodle-attack-and-the-end-of-ssl-3-0/ this blog post].
=What happens when you access vulnerable sites=
When you try to access a site that only supports Secure Sockets Layer version 3.0 (SSLv3), Firefox blocks it and displays a message, '''Unable to Connect Securely''', explaining that Firefox cannot guarantee the safety of your data on that website because it uses SSLv3, a broken security protocol.
;[[Image:SSLv3]]
<!-- L10N: you can make a screenshot on https://mtsindia.in/ -->
If you see this message, please contact the website owner to let them know about the problem.
=Additional precautions=
To further protect yourself from attacks, keep Firefox [[Update Firefox to the latest version | up to date]]. The simplest way to do this is to set up automatic updates:
{for fx56}
#[[Template:optionspreferences]]
#In the ''General'' panel, scroll down to ''Firefox Updates''.
#Make sure that '''Automatically install updates''' is checked.
{for linux}
If you use your Linux distribution's packaged version of Firefox, there will be no Update tab in the panel. Instead, Firefox updates are managed by the Update Manager for your distribution, and any updates should be installed automatically.
{/for}
{/for}
{for not fx56}
# Click on the menu button [[Image:new fx menu]], then click {for win}{menu Options}{/for}{for mac,linux}{menu Preferences}{/for}.
# Click the {menu Advanced} panel, then click the {menu Update} tab, and make sure that '''Automatically install updates''' is checked.
{for linux}
If you use your Linux distribution's packaged version of Firefox, there will be no Update tab in the panel. Instead, Firefox updates are managed by the Update Manager for your distribution, and any updates should be installed automatically.
{/for}
{/for}
Firefox blocks Secure Sockets Layer version 3.0 (SSLv3) to protect your information from attacks. SSLv3 is a type of technology that some websites use to connect to a server. It is no longer secure, which makes it easy for hackers to extract your personal information during a connection. For more information, see [https://blog.mozilla.org/security/2014/10/14/the-poodle-attack-and-the-end-of-ssl-3-0/ this blog post].
=What happens when you access vulnerable sites=
When you try to access a site that only supports Secure Sockets Layer version 3.0 (SSLv3), Firefox blocks it and displays a message, '''Unable to Connect Securely''', explaining that Firefox cannot guarantee the safety of your data on that website because it uses SSLv3, a broken security protocol.
;[[Image:SSLv3]]
<!-- L10N: you can make a screenshot on https://mtsindia.in/ -->
If you see this message, please contact the website owner to let them know about the problem.
=Additional precautions=
To further protect yourself from attacks, [[Update Firefox to the latest version|keep Firefox up to date]]. The simplest way to do this is to set up automatic updates:
{for fx56}
# [[Template:optionspreferences]]
# In the {menu General} panel, scroll down to '''Firefox Updates'''.
# Make sure that '''Automatically install updates''' is checked.
{for linux}
Firefox update settings may be absent if you use your Linux distribution's packaged version of Firefox. Instead, Firefox updates are managed by the Update Manager for your distribution and any updates should be installed automatically.
{/for}
{/for}
{for not fx56}
# [[Template:optionspreferences]]
# Click the {menu Advanced} panel, then click the {menu Update} tab, and make sure that '''Automatically install updates''' is checked.
{for linux}
If you use your Linux distribution's packaged version of Firefox, there will be no Update tab in the panel. Instead, Firefox updates are managed by the Update Manager for your distribution and any updates should be installed automatically.
{/for}
{/for}