- 25.02.2020

Understanding certificates and private keys

understanding certificates and private keysPrivate Key/Public Key: The encryption using a private key/public key pair ensures that the data can be encrypted by one key. The public key is embedded into a digital certificate with additional information describing the owner of the public key, such as name, street address, and e-mail​.

Understanding certificates and private keys

Next Keys and Certificates To ensure trust between parties in a secure communication session, Palo Alto Networks firewalls and Panorama use digital certificates.

Each certificate contains a cryptographic key to encrypt plaintext or decrypt ciphertext. understanding certificates and private keys

Understanding certificates and private keys

Each certificate also includes a digital signature to authenticate the identity of the futures stop profit and. The issuer must be in the list of trusted certificate authorities CAs of the authenticating party.

Optionally, the authenticating party verifies the issuer did not revoke the certificate see Certificate Revocation. Palo Alto Networks understanding certificates and private keys and Panorama use certificates in the following applications: User authentication for Captive Portal, multi-factor authentication MFAand web interface access to a firewall or Panorama.

Understanding certificates and private keys

External dynamic list EDL validation. User-ID agent and TS agent access.

Understanding certificates and private keys

Decrypting inbound understanding certificates and private keys outbound SSL traffic. A firewall decrypts the traffic to apply policy rules, then re-encrypts it before forwarding the traffic to the final destination.

How SSL certificate works?

To secure a connection between itself and the client, the firewall uses a signing certificate to automatically generate a copy of the destination server certificate. The following table describes the keys and certificates that Palo Alto Networks firewalls and Panorama use.

Understanding certificates and private keys

Understanding certificates and private keys a best practice, use different keys and certificates for each usage. If you configure Captive Portal to use certificates for identifying users instead of, or in addition to, interactive authenticationdeploy client certificates also.

Digital Signatures and Digital Certificates

For added security, store understanding certificates and private keys key on a hardware security understanding certificates and private keys for details, see Secure Keys with a Hardware Security Module.

This means that if the firewall uses an intermediate certificate, you must reimport the certificate from your web server to understanding certificates and private keys firewall after you upgrade to a PAN-OS 8.

Otherwise, SSL Inbound Inspection sessions that have an intermediate certificate understanding certificates and private keys the chain will fail.

To install a chained certificate: Open each certificate.

Understanding certificates and private keys

Paste each certificate end-to-end with the Understanding certificates and private keys Certificate at the top with each signer included below. Click the following understanding certificates and private keys the file as a text.

Import the combined chained certificate into the firewall.

Understanding certificates and private keys

For example, if you enable SSL decryption but your understanding certificates and private keys includes servers for which the firewall should not decrypt traffic for example, web services for your HR systemsimport the corresponding certificates onto the firewall and configure them as SSL Exclude Certificates.

See Decryption Exclusions.

Understanding certificates and private keys

Therefore, as understanding certificates and private keys of the GlobalProtect deployment, deploy server certificates for all GlobalProtect portals, gateways, and Mobile Security Managers.

Optionally, deploy certificates for authenticating users also. IKE gateways use certificates or preshared keys to authenticate the peers to understanding certificates and private keys other.

Public Key and Private Keys

You configure and assign the certificates article source keys when defining an IKE gateway on a firewall.

Master Key The firewall uses a master key to encrypt all private keys and passwords. If your network requires a secure location for storing private keys, you can use an encryption wrapping key stored on a hardware security module HSM to encrypt the master key.

Understanding certificates and private keys

Secure Syslog The certificate to enable secure connections between the firewall and a syslog server. See Syslog Field Descriptions.

SSL and SSL Certificates Explained For Beginners

The firewall can use a self-signed root CA certificate to automatically issue certificates for other applications for example, SSL Forward Proxy. Also, if a firewall understanding certificates and private keys establish secure connections with other firewalls, the root CA that issues their certificates must be in the list of trusted root CAs on the firewall.

Understanding certificates and private keys

However, you can enhance these connection by deploying custom certificates to the devices in your deployment.

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