Configuring Mirror and Decrypt in SmartConsole for Gateway Mode

Workflow for Security Gateway / Cluster / Scalable Platform Security Group in Gateway mode:

Enable the HTTPS Inspection Feature on a Security Gateway that inspects traffic encrypted by the Secure Sockets Layer (SSL) protocol for malware or suspicious patterns. Synonym: SSL Inspection. Acronyms: HTTPSI, HTTPSi. in the object of your Security Gateway Dedicated Check Point server that runs Check Point software to inspect traffic and enforce Security Policies for connected network resources. / Cluster Two or more Security Gateways that work together in a redundant configuration - High Availability, or Load Sharing. (for decrypting the HTTPS traffic).

Procedure

Step	Instructions
a	Connect with SmartConsole Check Point GUI application used to manage a Check Point environment - configure Security Policies, configure devices, monitor products and events, install updates, and so on. to the Management Server Check Point Single-Domain Security Management Server or a Multi-Domain Security Management Server..
b	From the left navigation panel, click Gateways & Servers.
c	Open the Security Gateway / Cluster object.
d	From the navigation tree, click HTTPS Inspection.
e	View and export the certificate.
f	Check Enable HTTPS Inspection.
g	Click OK.

Configure the HTTPS Inspection Rule Base All rules configured in a given Security Policy. Synonym: Rulebase. (for decrypting the HTTPS traffic).

Procedure

Step	Instructions
a	From the left navigation panel, click Security Policies.
b	From the left tree, click HTTPS Inspection.
d	Configure the HTTPS Inspection Rule Set of traffic parameters and other conditions in a Rule Base (Security Policy) that cause specified actions to be taken for a communication session. Base. See R81 Security Management Administration Guide. For more settings, in the HTTPS Tools section, click Additional Settings.
e	Publish the SmartConsole session.

Activate the Mirror and Decrypt in the object of your Security Gateway / Cluster.

Procedure

Step

Instructions

From the left navigation panel, click Gateways & Servers.

Open the Security Gateway / Cluster object.

From the left tree, click Network Management.

From the top toolbar, click Get Interfaces Without Topology.

Make sure the interface designated for Mirror and Decrypt is listed with the dummy IP address.

Select the interface designated for Mirror and Decrypt and click Edit.

From the navigation tree, click General.

In the General section:

In the Network Type field, select Private.

Note - This field shows only in Cluster objects.

In the Topology section:

Click Modify. The Topology Settings window opens.

In the Leads To section:

Select Override.
Select This Network (Internal).
Select Network defined by the interface IP and Net Mask.

In the Security Zone section:

Select User defined.
Do not check the Specify Security Zone.

In the Anti-Spoofing section:

Clear the Perform Anti-Spoofing based on interface topology.

Click OK to save the changes and close the Topology Settings window.

From the navigation tree of the Security Gateway / Cluster object:

Click the [+] near the Other and click Mirror and Decrypt.

Check Mirror gateway traffic to interface.

The Mirror and Decrypt - User Disclaimer window opens.

Read the text carefully.
Check I agree to the terms and conditions.
Click OK to accept and close the disclaimer.

In the Mirror gateway traffic to interface field, select the designated physical interface.

Click OK to save the changes and close the Security Gateway / Cluster properties window.

Configure the Mirror and Decrypt rules in the Access Control Policy for the traffic you wish to mirror and decrypt.

Procedure

Best Practice - We recommend you to configure a new separate Access Control Layer to contain Mirror and Decrypt rules. Alternatively, you can configure the Mirror and Decrypt rules in the regular Rule Base.

Important - When you configure the Mirror and Decrypt rules, these limitations apply:

In the Mirror and Decrypt rules, you must not select Content criteria, such as Application, URL Filtering Check Point Software Blade on a Security Gateway that allows granular control over which web sites can be accessed by a given group of users, computers or networks. Acronym: URLF., Service matched by IP Protocol, Content Awareness Check Point Software Blade on a Security Gateway that provides data visibility and enforcement. Acronym: CTNT..
Above the Mirror and Decrypt rules, you must not configure other rules that contain Content criteria, such as Application, URL Filtering, Service matched by IP Protocol, Content Awareness.
You must configure rules that contain an excluded source or an excluded destination above the Mirror and Decrypt rules.

The Name column of these rules cannot contain these strings: <M&D>, <M&d>, <m&D>, or <m&d>.

The procedure below describes how to configure the Mirror and Decrypt rules in a separate Access Control Layer in SmartConsole:

Step

Instructions

From the left navigation panel, click Security Policies.

Create a new Access Control Layer in the Access Control Policy.

In SmartConsole top left corner, click Menu > Manage policies and layers.

Select the existing policy and click Edit (the pencil icon).

Alternatively, create a new policy.

From the navigation tree of the Policy window, click General.

In the Policy Types section, make sure you select only the Access Control.

In Access Control section, click on the + (plus) icon. A pop up window opens.

In the top right corner of this pop up window, click New Layer.

The Layer Editor window opens.

From the navigation tree of the Layer Editor window, click General.

In the Blades section, make sure you select only the Firewall.

On other pages of the Layer Editor window, configure additional applicable settings.

Click OK.

In the Access Control section, you see the Network Layer and the new Access Control Layer.

Click OK to save the changes and close the Policy window.

In SmartConsole, at the top, click the tab of the applicable policy.

In the Access Control section, click the new Access Control Layer.

In the default rule, you must change the Action column from Drop to Accept to not affect the policy enforcement:

Name - Your text

Important - You cannot use these strings:

<M&D>, <M&d>, <m&D>, or <m&d>

Source - *Any
Destination - *Any
VPN - *Any
Services & Applications - *Any
Action - Must contain Accept
Track - None
Install On - *Policy Targets

Above the existing Cleanup rule, add the applicable rules for the traffic you wish to Mirror and Decrypt.

You must configure the Mirror and Decrypt rules as follows:

Name - Must contain one of these strings (the angle brackets <> are mandatory):
- <M&D>
- <M&d>
- <m&D>
- <m&d>
Source - Select the applicable objects
Destination - Select the applicable objects
VPN - Must leave the default *Any
Services & Applications - Select the applicable services (to decrypt the HTTPS traffic, select the applicable HTTP, HTTPS, or Proxy services)
Action - Must contain Accept
Track - Select the applicable option (None, Log, or Alert)
Install On - Must contain one of these objects:
- *Policy Targets (this is the default)
- The Security Gateway, or Cluster object, whose version is R80.20 or higher

Important:

In the Mirror and Decrypt rules, you must not select Content criteria, such as Application, URL Filtering, Service matched by IP Protocol, Content Awareness.
Above the Mirror and Decrypt rules, you must not configure other rules that contain Content criteria, such as Application, URL Filtering, Service matched by IP Protocol, Content Awareness.
You must configure rules that contain an excluded source or an excluded destination above the Mirror and Decrypt rules.

The Name column of these rules cannot contain these strings: <M&D>, <M&d>, <m&D>, or <m&d>.

Publish the SmartConsole session.

Install the Access Control Policy.

If in a Mirror and Decrypt rule you set the Track to Log, then you can filter the logs for this rule by the Access Rule Name, which contains the configured string:

<M&D>, <M&d>, <m&D>, or <m&d>.