Exam CS0-002 topic 1 question 272 discussion

No every tunnel is an encrypted tunnel. Here does not say anything about encryption, makes sense a jumpbox in A.

Placing the jumpbox in an isolated network segment provides an additional layer of protection for the ICS environment. Authenticating on the IT side provides control over who has access to the jumpbox. Finally, forwarding into the ICS network provides secure access to devices within the ICS environment without compromising security.

Placing the jumpbox in an isolated network segment provides an additional layer of protection for the ICS environment. Authenticating on the IT side provides control over who has access to the jumpbox. Finally, forwarding into the ICS network provides secure access to devices within the ICS environment without compromising security.

"forwarded into the ICS environment seems like a red flag to me. Anyone else?

D is less secure because tunneled connections can still be compromised and may not provide sufficient isolation between the IT and ICS environments.

A jumpbox server is typically places between the trust zone and the DMZ which is in this case the "isolated network"

To provide the MOST secure access model in the scenario described, the jumpbox should be placed in an isolated network segment, authenticated on the IT side, and forwarded into the ICS network, which is option A. Option A allows for a secure jumpbox, as it is placed in an isolated network segment, which helps to reduce the risk of the jumpbox being compromised by attackers. The jumpbox is authenticated on the IT side, which helps to ensure that only authorized users are granted access to the ICS environment. By forwarding the jumpbox into the ICS network, it can provide secure access for IT resources without compromising the security of the ICS environment.

Changing my answer to D.

the jump box should be segmented from the ICS system network. d. is a good answer but does not provide the added layer of segmentation

The most secure access model for a jumpbox in an ICS environment involves placing it on the IT side of the network and authenticating it, then tunneling into the ICS environment. This approach minimizes the exposure of the ICS network to potential threats and provides additional layers of security. By tunneling, only authorized access is allowed, and all traffic between the IT network and the ICS network is encrypted, preventing eavesdropping or tampering. In addition, by placing the jumpbox on the IT side of the network, the security engineer can take advantage of existing IT security controls and processes to further protect the ICS environment.