Avamar - The "sshd -t" command returns "Deprecated option" after installing the OS Security Rollup

Summary: Running the sshd command in "test mode" produces a warning about the UsePrivilegeSeparation option being deprecated.

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Symptoms

The output of the command resembles the following: 
root@avamar:/etc/ssh/#: sshd -t
/etc/ssh/sshd_config line 152: Deprecated option UsePrivilegeSeparation

Cause

The 2024 R1 OS Security Rollup upgraded OpenSSH on Avamar from version 7.2 to version 8.4. The UsePrivilegeSeparation option has been deprecated in OpenSSH version 7.5, making the setting mandatory.

Resolution

  1. Log in to the Avamar server as an admin user.
  2. Elevate privileges to root:
su -
  1. Edit the /etc/ssh/sshd_config file and comment out the setting in line 152. Change this line:
UsePrivilegeSeparation no
This should be the result: 
#UsePrivilegeSeparation no
  1. Save changes and test the configuration:
sshd -t
  1. Restart the sshd service
systemctl restart sshd.service
  1. The warning should not return.

Affected Products

Avamar Server
Article Properties
Article Number: 000226746
Article Type: Solution
Last Modified: 05 Aug 2025
Version:  2
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