156-315.81 Questions Bank

 For Stateful Mode configuration, chain modules marked with 2 will not apply. Stateful Mode configuration is a feature that allows administrators to define how packets are processed by different firewall kernel modules in inbound and outbound directions. Chain modules are firewall kernel modules that perform various security functions, such as VPN, IPS, QoS, etc. Each chain module is associated with a key, which specifies the type of traffic applicable to the chain module. The key can be one of the following values: 0 for all packets, 1 for stateful packets, 2 for stateless packets, and 3 for no match packets. For Stateful Mode configuration, only chain modules with key 0 or 1 will apply, as they handle all packets or stateful packets. Chain modules with key 2 will not apply, as they handle stateless packets, which are not relevant for Stateful Mode configuration.

The port that the CPM process runs on is TCP 19009. CPM stands for Check Point Management, and it is the main process that runs on the Security Management Server and interacts with SmartConsole clients. CPM is responsible for managing policies, objects, logs, tasks, and other management functions. CPM listens on TCP port 19009 for incoming connections from SmartConsole clients. The other ports are either used by other processes or not related to CPM. 

 According to the Check Point R81 training course, the medium path is available only when CoreXL is enabled. CoreXL is a performance-enhancing technology that allows multiple CPU cores to process traffic simultaneously. The medium path handles packets that require deeper inspection or content awareness, such as IPS, Anti-Virus, or URL Filtering. The other paths are either available regardless of CoreXL or not valid terms. References: Certified Security Expert (CCSE) R81.20 Course Overview

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