Checkpoint Updated 156-315.81 Exam Questions and Answers by gus

 The TCP/IP model is a four-layer model that describes how data is transmitted over a network. The four layers are: Application, Transport, Internet, and Network Access. The Application layer provides services and protocols for applications to communicate with each other. The Transport layer provides reliable or unreliable data delivery between hosts. The Internet layer provides routing and addressing of packets across networks. The Network Access layer provides physical and logical access to the network media. References: Training & Certification | Check Point Software, Check Point Resource Library

Check Point security components are divided into the following components: GUI Client, Security Management, Security Gateway. GUI Client is the graphical user interface that allows administrators to configure, manage, and monitor Check Point products and security policies. Security Management is the server that stores and enforces the security policies and provides logging and reporting functions. Security Gateway is the device that inspects and filters network traffic according to the security policies. 

Tom’s changes will have been stored on the Management when he reconnects and he will not lose any of his work.

This is because SmartConsole has a feature called Concurrent Administration, which allows multiple administrators to work on the same Security Policy simultaneously, without blocking each other or creating conflicts. Concurrent Administration uses a locking mechanism to prevent multiple administrators from modifying the same rule or object at the same time. When an administrator clicks on a rule or an object, it becomes locked and a lock icon appears next to it. The lock icon shows the name of the administrator who is working on that rule or object, and prevents other administrators from editing it until it is unlocked12.

Concurrent Administration also has a feature called Session Persistence, which preserves the changes made by an administrator in case of a network failure or a SmartConsole crash. When an administrator reconnects to the Management Server after a network failure or a SmartConsole crash, they can resume their work from where they left off, without losing any changes. The changes are stored locally on the administrator’s machine until they are published to the Management Server13.

Therefore, if Tom has connected to the R81 Management Server remotely using SmartConsole and is in the process of making some Rule Base changes, when he suddenly loses connectivity, his changes will not be lost. They will be stored locally on his machine and he can resume his work when he reconnects to the Management Server.

After trust has been established between the Check Point components, the Security Gateway IP address cannot be changed without re-establishing the trust. This is because the trust is based on the Secure Internal Communication (SIC) mechanism, which uses certificates to authenticate and encrypt the communication. The certificates are issued by the Internal Certificate Authority (ICA) of the Security Management Server / Domain Management Server, and contain the name and IP address of the component. Therefore, if the IP address of a component is changed, the certificate will become invalid and the trust will be lost. To restore the trust, the certificate must be renewed or reissued by the ICA12.

However, there are some exceptions to this rule. The Security Gateway name can be changed in command line without re-establishing trust, as long as the IP address remains the same. This is because the SIC mechanism does not rely on the hostname, but on the IP address and the SIC name (which is usually derived from the hostname, but can be manually changed). The Security Management Server name can be changed in SmartConsole without re-establishing trust, as long as the IP address remains the same. This is because SmartConsole uses a different mechanism to connect to the Security Management Server, which does not depend on the SIC certificate. The Security Management Server IP address can be changed without re-establishing trust, as long as some steps are followed to update the Check Point Registry file on the managed Security Gateways / Cluster Members / VSX Virtual Devices. This is because the Registry file contains the IP address of the ICA, which is used for certificate renewal. If the Registry file is not updated, then the certificate renewal will fail and the trust will be lost3.

References: 1: Check Point R81 Security Administration Guide - Check Point Software, page 162 2: Check Point R81 Security Engineering Guide - Check Point Software, page 162 3: How to renew SIC after changing IP Address of Security Management Server - Check Point Software, Solution ID: sk103356