topic Re: This server does not support Forward Secrecy with the reference browsers. Grade capped to B. in GlobalProtect Discussions

This server does not support Forward Secrecy with the reference browsers. Grade capped to B.

Oliver_Dalugodage — Wed, 21 Aug 2024 06:39:11 GMT

Hi Champions,

I have evaluated the IP address to the GlobalProtect gateway on the Palo Alto firewall via Qualys SSL Labs and got the following results.

Object > Decryption > Decryption Profile is

I am trying to find out how to fix this issue of "This server does not support Forward Secrecy with the reference browsers. Grade capped to B." to get the grade back to A.

Pan OS version is: 10.1.10-h2

Could you please help me?

Thank you so much for your attention and participation.

Re: This server does not support Forward Secrecy with the reference browsers. Grade capped to B.

SutareMayur — Wed, 21 Aug 2024 07:46:22 GMT

Hi @Oliver_Dalugodage Normally with DHE & ECDHE, it should be enabled by default on Palo Alto.

Can you confirm what encryption and authentication algorithm are you using? It might be flagged due to weak algorithm being used.

Re: This server does not support Forward Secrecy with the reference browsers. Grade capped to B.

Oliver_Dalugodage — Thu, 22 Aug 2024 05:06:28 GMT

Hi @SutareMayur ,

Thank you for trying to help.

The settings are as follows.

The Cipher suits are as follows.

I will check out your Youtube channel. Thank you for providing the info to it.

Please help.

Thank you.

Re: This server does not support Forward Secrecy with the reference browsers. Grade capped to B.

SutareMayur — Fri, 23 Aug 2024 10:45:27 GMT

Hi @Oliver_Dalugodage

You should get a rid of CBC mode ciphers. Many Security organizations including Qualys where you are scanning your site, consider CBC ciphers to be weak. Due to this, there are few ciphers enabled which does not support PFS and so showing in your scanning report also. Kindly refer this article.

Hope it helps!