Dell SonicWall Connection

If you used Chrome you should be able to bypass it by clicking the proceed option as shown below.  If you want to correct the error you will have to get SSL certificates for them and set it up.

Import the DPI-SSL CA Certificate in your browser as "Trusted Root CA".

More details:
https://support.sonicwall.com/kb/213426

KB 213426 article was referring to Deep Packet Inspection for CFS (content filtering) .... content filtering for external sites.  I think the asker was referring to when trying to login to the Sonicwall appliances.

Mwvarner, can you confirm?

Your problem is going to be one of two things:

1) You have HTTPS turned off on the LAN interface.


2) The issue of self signed certificates, which Wayne88 has discussed.

Where is the page the procedure is referencing.  Is in on the sonicwall or the dell web site?

 Download the SonicWall Client DPI-SSL CA certificate from the Client DPI-SSL page.

To Wayne88's question, it is when I logon to the firewall.

It's on the Sonicwall itself. Each one that you're having that issue with, you need to sign into and fix.
Go to Network > Interfaces
Click Configure for the LAN interface, which is usually X0

Download the SonicWall Client DPI-SSL CA certificate from the Client DPI-SSL page.

This is irrelevant to your issue. Don't need to be at this portion.

Here is what I am seeing when I go to Network interfaces / XO.   See attached image.  Not sure what the Interface settings has to do with security certificates.
Image1.JPG

If you uncheck HTTPS in management section do you still get the same error?   But then the connection is not secured to the management interface if you require it to be.

I think we need some clarity on the exact error you're getting. Could you please show the actual certificate error, along with the certificate itself?

@masnrock - Agree, can you upload a screenshot?

Also, what model is your Sonicwall, along with what version of firmware? Could be that you need to upgrade and patch because of the cipher utilized.

See the attached word doc for all the errors I see as I connect.
SonicWall-Errors.docx

Here are the detail from the Certificate Error  See attached image2.
Image2.JPG

These are helpful, but I also need to know....

What model is your Sonicwall?
What version of firmware is on your Sonicwall?

I have several but the info for the one I'm working on this issue with at the moment is below.  All 30+  SonicWalls are doing the exact same thing.

The SonicWall is a TZ-205 and the firmware version is 5.9.1.7-2a

Thanks'.  

The pain of having to click through each time is much less than the pain of trying to get it fixed.