While planning segmentation for an ICS environment, a security engineer determines IT resources will need access to devices within the ICS environment without compromising security.
To provide the MOST secure access model in this scenario, the jumpbox should be __________.
Click on the arrows to vote for the correct answer
A. B. C. D.A.
In an ICS (Industrial Control Systems) environment, ensuring security is critical, while providing access to IT resources to devices within the ICS environment is also essential. A jumpbox is a secure system used to access and manage other systems in a different security zone.
Out of the given options, the most secure access model for the jumpbox in this scenario would be A. placed in an isolated network segment, authenticated on the IT side, and forwarded into the ICS network.
Explanation for each option:
A. Placed in an isolated network segment, authenticated on the IT side, and forwarded into the ICS network. This option involves placing the jumpbox in an isolated network segment, which means it is separated from other networks, including the ICS network. It will be authenticated on the IT side, which means the IT resources will have to provide authentication credentials to access the jumpbox. The jumpbox will then be forwarded into the ICS network, allowing the IT resources to access the devices within the ICS environment securely.
B. Placed on the ICS network with a static firewall rule that allows IT network resources to authenticate. This option involves placing the jumpbox on the ICS network and allowing IT network resources to authenticate through a static firewall rule. This option is less secure because placing the jumpbox on the ICS network will expose it to the same risks as other devices on the ICS network. A static firewall rule is also less secure compared to dynamic firewall rules, which are more difficult to bypass.
C. Bridged between the IT and operational technology networks to allow authenticated access. This option involves bridging the jumpbox between the IT and operational technology networks, which means the jumpbox will be part of both networks. This option is less secure because bridging the networks can create security loopholes, and any security breach on one network can affect the other network.
D. Placed on the IT side of the network, authenticated, and tunneled into the ICS environment. This option involves placing the jumpbox on the IT side of the network and tunneling it into the ICS environment. This option is less secure because tunneling can create a security loophole and expose the ICS environment to risks from the IT network.
In conclusion, the most secure access model for the jumpbox in this scenario would be to place it in an isolated network segment, authenticate it on the IT side, and forward it into the ICS network. This approach ensures that the jumpbox is separated from other networks, secured with authentication, and only accessible to authorized IT resources.