Exam CS0-002 topic 1 question 108 discussion

I believe C is the correct answer.

D is correct. If you ever set up a firewall and VPN in any company you would know the Firewall is usually the VPN server and it relays the authentication.

C. VPN server behind the firewall.

C looks the most reasonable.

This is the most secure configuration among the provided options. The firewall will filter incoming and outgoing traffic, allowing only legitimate traffic to reach the VPN server. This setup provides an additional layer of security to the VPN server and the internal network.

The provided answer is correct. When the VPN server is on the firewall the firewall itself works before the VPN and after the VPN, which provides highest level of security.

By placing the VPN server behind the firewall, all incoming and outgoing traffic is inspected by the firewall before it reaches the VPN server. This setup provides an additional layer of security, as the firewall can block any unauthorized traffic before it reaches the VPN server, and the VPN server only allows authenticated users to connect to the network.

Agree. C provides the most security. Even though many firewalls contain VPN features these days, this may submit the firewall to more attacks.

C. is for correct

C is correct

I will go with C, VPN server behind FW, and for a simple reason: it is talking about a VPN Server to stablish the remote connectivity, if the FW itself was supposed to be the gateway one could argue that VPN at the firewall would be the correct answer, but I agree this is outdated since companies rarely use specific purpose-built VPN servers nowadays.

C: The traditional answer is "VPN server behind FW". Personally I think this is outdated for some time now. A VPN Server on a FW offers severe advantages (solution by one provider, central management, packet inspection of VPN connections, FW rules applied to VPN connections, geofencing ...) which outweight the drawbacks at least in small and medium sized companies.

The most common place for a VPN Server is behind the firewall, often in a DMZ with mail servers, Web servers, database servers, and so on. The advantage of this placement is that it fits cleanly into the network’s current security infrastructure. Also, the administrator is already familiar with how to route traffic through the firewall and only has to become familiar with the ports needed by the VPN server. https://www.techrepublic.com/article/configuring-vpn-connections-with-firewalls/#:~:text=As%20I%20mentioned%20above%2C%20the,database%20servers%2C%20and%20so%20on.

VPN Servers are almost exclusively internal to the Firewall.

Best to achieve the highest security, has to be C

I would go with D here. I've configured many firewalls and VPN and usually the VPN is on the firewall itself. Unless your VPN server will be on a host (like OpenVPN, Strongswan or even Windows VPN).

I have never seen a VPN infront of firewall. At most you have a FW->vpn->fw If you have an exposed public open vpn, chances of getting compromised are higher than behind the FW