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Software is Preventing Firefox From Safely Connecting to This Site

hi all,

every website i go on i get this error -

www.vodafone.co.uk is most likely a safe site, but a secure connection could not be established. This issue is caused by Sophos Endpoint RSA Root, which is either software on your computer or your network.

ive made sure "enable DNS over HTTPS" is disabled ie unchecked

but im still getting the error on every website i try to go on

any help please,

thanks,

rob

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Qoosh over 2 years ago in reply to Sophos User1175 +2 verified

Do you have any additional details on what error is displayed? Could it be "SEC_ERROR_UNKNOWN_ISSUER"? The endpoint is also able to perform TLS/SSL decryption of HTTPS websites. I suggest checking if…

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0 Peter-Paul Gras over 2 years ago

Are you using SSL /TLS inspection rules? Did you install the cerificate in Firefox?

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0 Peter-Paul Gras over 2 years ago

Are you using SSL /TLS inspection rules? Did you install the cerificate in Firefox?

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0 Sophos User1175 over 2 years ago in reply to Peter-Paul Gras

where do i find the self signed cert for the sophos firewall, if i can get it, i will install on my firefox as a trusted root CA
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0 Sophos User1175 over 2 years ago in reply to Sophos User1175

i have no idea if its an endpoint issue or sophos firewall issue
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0 Peter-Paul Gras over 2 years ago in reply to Sophos User1175

Please read this: support.sophos.com/.../KB-000035645

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0 Sophos User1175 over 2 years ago in reply to Peter-Paul Gras

that did not work, maybe its endpoint then doing this instead of the firewall?
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0 Peter-Paul Gras over 2 years ago in reply to Sophos User1175

Does the traffic hit the correct FW rule? Can you see expected entries in the SSL/TLS log?

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0 Sophos User1175 over 2 years ago in reply to Peter-Paul Gras

its def endpoint, as when i disable web control, it works, i get no cert error

going to google it now but if anyone can help much appreciated

thanks,

rob
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0 Qoosh over 2 years ago in reply to Sophos User1175

Let me know if the following article applies to the issues you're experiencing.
- Firefox may experience issues if DNS over HTTPS is enabled

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