156-215.81.20 VPN Basics Practice Question
A remote access user connects to a Check Point Security Gateway using the Mobile Access blade. The user needs to access internal resources, but the connection fails. The administrator checks the gateway and sees that the user authenticated successfully, but no IP address was assigned. Which component is responsible for assigning IP addresses to remote access users in this scenario?
⚠ Common exam trap
The trap here is assuming that an internal DHCP server or RADIUS server provides IP addresses to VPN clients, when in fact Check Point uses Office Mode for this purpose.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The Office Mode pool configured on the gateway.
The correct answer is the Office Mode pool configured on the gateway. Office Mode is the Check Point feature that assigns virtual IP addresses to remote access clients. When a user authenticates but receives no IP address, the most likely cause is that the Office Mode pool is not configured, is exhausted, or is incorrectly defined. This component is directly responsible for IP assignment in Remote Access VPN.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The Office Mode pool configured on the gateway.
Why this is correct
Office Mode is a feature in Check Point Remote Access VPN that assigns a virtual IP address to remote clients from a predefined pool. This allows the client to access internal resources as if it were on the local network. If no IP address is assigned, the Office Mode pool may be misconfigured or exhausted. The successful authentication but lack of IP address points directly to an Office Mode issue, making this the correct component.
- ✗
The RADIUS server used for authentication.
Why it's wrong here
A RADIUS server authenticates users but does not assign IP addresses to VPN clients. While RADIUS can return attributes, IP assignment for Check Point remote access is handled by Office Mode. Authentication succeeded, so RADIUS is functioning. The failure to assign an IP address is due to Office Mode configuration, not the RADIUS server.
- ✗
The DHCP server on the internal network.
Why it's wrong here
A DHCP server on the internal network is not used to assign IP addresses to remote access VPN clients. Check Point uses its own mechanism, Office Mode, to assign virtual IPs. Relying on an internal DHCP server would require additional configuration and is not the default method. Since the user authenticated but received no IP, the issue is with Office Mode, not DHCP.
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The DNS server configured in the VPN community.
Why it's wrong here
A DNS server resolves domain names to IP addresses; it does not assign IP addresses to clients. The VPN community may have DNS settings for internal resolution, but that is unrelated to IP address assignment for remote access. The lack of an assigned IP address is not caused by DNS misconfiguration, so this option is incorrect.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Check Point exam blueprint
This 156-215.81.20 practice question is part of Courseiva's free Check Point certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 156-215.81.20 exam.