how to work decryption policy?

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L4 Transporter

how to work decryption policy?

Hi.. all,

how are you today ? any one please describe about decryption policy and how log bits (0-2048) support? :smileyhappy: :smileyhappy: :smileyinfo:

Thanks

Satish

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L7 Applicator

The basic overview for ssl decryption is doc-2008.

Controlling SSL Decryption

PA does support 2048 bit certs.

Steve Puluka BSEET - IP Architect - DQE Communications (Metro Ethernet/ISP)
ACE PanOS 6; ACE PanOS 7; ASE 3.0; PSE 7.0 Foundations & Associate in Platform; Cyber Security; Data Center
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L4 Transporter

Dear Steven,

Thnx for you reply.

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L5 Sessionator

Following doc explains on different Decryption Certs

SSL Decryption Certificates

Hope this helps.

Thanks

Numan

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L4 Transporter

Dear Steven,

I have a question after have read your comment.

We use a self-generated certificate with 2048 bits from FW for ssl outbound decryption.

But we always see 1024 bits certificate when connecting to facebook.

2048 bits certificate can be generated by FW-self, but can not use to decryption. because FW does not support. Right?


Thanks and Regards,

KC Lee

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L5 Sessionator

Hi KC Lee,

For outbound SSL decryption, 1024 bit key is used between PA and clients connection regardless of the key length of PA generated CA certificate, or key length of real server presents. This is by design. Hope that helps. Thank you.

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L5 Sessionator

Hi Satish,

Decryption is firewall acting as man in the middle. Firewall will intercept ssl connection from end clients to server, send a response back to client appearing as server with certificates and start a new connection from firewall's external interface to the server to get requested data.  That way we have 2 portion of connection one that originates at clients and ends at the firewall's internal interface and other that originates at external interface and ends at the server.

Firewall will manage these 2 communication for each ssl communication.

For outbound SSL decryption, 1024 bit key is used between PA and clients connection regardless of the key length of PA generated CA certificate, or key length of real server presents. This is by design. Hope that helps. Thank you.

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L4 Transporter

Hi ssharma,

Thank your very much for your answer.

It helps me so clear.

Thanks,

KC Lee

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