NGINX configuration for SSL Inbound Inspection
cancel
Showing results for 
Search instead for 
Did you mean: 

NGINX configuration for SSL Inbound Inspection

L3 Networker

Hello everybody,

 

  I'm trying to enable SSL Inbound Inspection to decrypt traffic to an internal webserver that runs on NGINX. I have already added the server certificate and key, and set up the corresponding decryption policy. The problem is that the firewall is not able to decrypt the traffic due to unsupported cipher, so I'm trying to force the NGINX web server to use only the PAN-OS 10 supported cipher suites.

 

By default, the NGINX server si configured as follows:

 

ssl_protocols TLSv1.2 TLSv1.3;

ssl_ciphers "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384";

 

PAN-OS 10 supports the following cipher suites: https://docs.paloaltonetworks.com/compatibility-matrix/supported-cipher-suites/cipher-suites-support...

 

anyway I'm not able to select the right combination to make the webserver and the decryption work.

 

Does anybody have any working NGINX configuration example?

--
Linus Torvalds does not push the toilette flush button, he just says "make clean".
2 REPLIES 2

L7 Applicator

ECDHE-RSA-AES128-GCM-SHA256 or DHE-RSA-AES128-GCM-SHA256 should work. try removing all the other cyphers as too many could cause conflicts that have one side give up before they can reach a desirable pair

Tom Piens
Like my answer? check out my book! https://bit.ly/MasteringPAN


@reaper wrote:

ECDHE-RSA-AES128-GCM-SHA256 or DHE-RSA-AES128-GCM-SHA256 should work. try removing all the other cyphers as too many could cause conflicts that have one side give up before they can reach a desirable pair



Unfortunately I get always the same error:

 

Unsupported cipher. Supported client cipher bitmask: 0x00000000. Supported decrypt profile cipher bitmask: 0x04740614.

 

I don't know what that "bitmask: 0x00000000" means.

--
Linus Torvalds does not push the toilette flush button, he just says "make clean".
Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the LIVEcommunity as a whole!

The LIVEcommunity thanks you for your participation!