The ESXi host Secure Shell (SSH) daemon must set a timeout count on idle sessions.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| low | V-256394 | SRG-OS-000480-VMM-002000 | ESXI-70-000026 | SV-256394r959010_rule | 2025-02-11 | 1 |
| Description |
|---|
| Setting a timeout ensures that a user login will be terminated as soon as the "ClientAliveCountMax" is reached. |
| ℹ️ Check |
|---|
| From an ESXi shell, run the following command: # /usr/lib/vmware/openssh/bin/sshd -T|grep clientalivecountmax Expected result: clientalivecountmax 3 If the output does not match the expected result, this is a finding. |
| ✔️ Fix |
|---|
| From an ESXi shell, add or correct the following line in "/etc/ssh/sshd_config": ClientAliveCountMax 3 |