156-315.81 Exam Dumps : Check Point Certified Security Expert R81.20 ( 156-315.81.20 )

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

The feature that provides Full Layer3 VPN –IPSec VPN, giving users network access to all mobile applications, is the correct answer.

Capsule Connect/VPN is used to establish secure VPN connections for mobile devices, and the Full Layer3 VPN (IPSec VPN) option provides comprehensive network access.

References: Check Point documentation or training materials related to Mobile Access Methods and VPN configurations.

 According to the Check Point R81 Mobile Access Administration Guide, the recommended number of physical network interfaces in a Mobile Access cluster deployment is three. One interface should be connected to the organization network, one interface should be connected to the Internet, and one interface should be used for synchronization between cluster members. This configuration provides optimal performance and security for Mobile Access traffic.