After applying the Red Hat Enterprise Linux 7 STIG, sshd will not start

Solution Verified - Updated -

Issue

  • SSHD will not start after applying "STIG for Red Hat Enterprise Linux 7"
  • Attempting to start sshd results in the following
systemd: Starting OpenSSH server daemon...
sshd: /etc/ssh/sshd_config line 155: Bad SSH2 cipher spec 'aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc,aes192-cbc,aes256-cbc,aes256-cbcMACs'.
systemd: sshd.service: main process exited, code=exited, status=255/n/a
systemd: Unit sshd.service entered failed state.
systemd: sshd.service failed.

Environment

  • Red Hat Enterprise Linux 7 with USGCB/STIG Profile

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