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The operating system must use cryptography to protect the confidentiality of remote access sessions.


Overview

Finding ID Version Rule ID IA Controls Severity
V-39411 SRG-OS-000033-ESXI5 SV-51269r1_rule High
Description
Remote network access is accomplished by leveraging common communication protocols and establishing a remote connection. These connections will occur over the public Internet. Remote access is any access to an organizational information system by a user (or an information system) communicating through an external, non-organization-controlled network (e.g., the Internet). Examples of remote access methods include dial-up, broadband, and wireless. Using cryptography ensures confidentiality of the remote access connections.
STIG Date
VMware ESXi Server 5.0 Security Technical Implementation Guide 2017-01-06

Details

Check Text ( C-46685r1_chk )
Disable lock down mode.
Enable the ESXi Shell.

Check the SSH daemon configuration for required protocol. # grep -i "Protocol 2" /etc/ssh/sshd_config | grep -v '^#'

Re-enable lock down mode.

If no lines are returned, or the returned protocol list contains anything except 2, this is a finding.
Fix Text (F-44424r1_fix)
Disable lock down mode.
Enable the ESXi Shell.

Edit the SSH daemon configuration and add/modify the "Protocol" configuration for Protocol 2 only.
# vi /etc/ssh/sshd_config

Re-enable lock down mode.