Checkpoint Updated 156-315.81 Exam Questions and Answers by zohaan

The error “no proposal chosen” indicates that the VPN gateway did not find a matching proposal for the IKE Phase 1 negotiation. This phase is responsible for establishing a secure channel between the VPN peers, using a pre-shared secret or a certificate. The proposal consists of parameters such as encryption algorithm, hash algorithm, Diffie-Hellman group, and lifetime. If the VPN gateway does not receive a proposal that matches its own configuration, it will reject the connection attempt and log the error “no proposal chosen” 1.

To troubleshoot this issue, one should verify that the VPN peers have the same IKE Phase 1 settings, such as:

• The same pre-shared secret or certificate
• The same encryption algorithm (e.g., AES-256)
• The same hash algorithm (e.g., SHA-256)
• The same Diffie-Hellman group (e.g., Group 14)
• The same lifetime (e.g., 86400 seconds)

One can use the command vpn tu on the VPN gateway to view the current IKE Phase 1 settings and compare them with the other peer. Alternatively, one can use the SmartConsole to check the VPN community properties and the gateway object properties for the IKE Phase 1 settings 2.

References: 1: Troubleshooting the “no proposal chosen” error - Check Point Software 2: Support, Support Requests, Training … - Check Point Software

The process that handles connection from SmartConsole R81 is cpm. 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. The other processes are either obsolete or irrelevant for SmartConsole connection.

The SmartEvent R81 Web application for real-time event monitoring is called SmartEventWeb. SmartEventWeb is a web-based interface that allows administrators to view and analyze security events from various sources, such as logs, reports, incidents, and indicators. SmartEventWeb provides dashboards, widgets, filters, and drill-down options to help administrators gain insights into their security posture. The other options are either incorrect or refer to different applications.

The default commands that appear when right-clicking the IP address, source or destination, in an event in SmartEvent are ping, whois, nslookup, and Telnet. SmartEvent is a unified security event management solution that provides visibility, analysis, and reporting of security events across multiple Check Point products. SmartEvent has a feature that allows administrators to run common command line executables that can assist in investigating events. Right-clicking the IP address, source or destination, in an event provides a list of default and customized commands that can be executed on the IP address of the active cell. The default commands are ping, whois, nslookup, and Telnet. Ping is a command that tests the connectivity and latency between two hosts by sending packets and measuring the response time. Whois is a command that queries a database for information about the owner and registrar of a domain name or an IP address. Nslookup is a command that queries a DNS server for information about a domain name or an IP address, such as its IP address, name server, mail server, etc. Telnet is a command that establishes a remote connection to another host using the Telnet protocol.