| # 5.2.5 Ensure SSH MaxAuthTries is set to 4 or less (Scored) |
| # |
| # Profile Applicability |
| # --------------------- |
| # - Level 1 - Server |
| # - Level 1 - Workstation |
| # |
| # Description |
| # ----------- |
| # The MaxAuthTries parameter specifies the maximum number of authentication attempts |
| # permitted per connection. When the login failure count reaches half the number, error |
| # messages will be written to the syslog file detailing the login failure. |
| # |
| # Rationale |
| # ---------- |
| # Setting the MaxAuthTries parameter to a low number will minimize the risk of successful |
| # brute force attacks to the SSH server. While the recommended setting is 4, set the number |
| # based on site policy. |
| # |
| # Audit |
| # ----- |
| # Run the following command and verify that output MaxAuthTries is 4 or less: |
| # |
| # # grep "^MaxAuthTries" /etc/ssh/sshd_config |
| # MaxAuthTries 4 |
| # |
| # Remediation |
| # ----------- |
| # Edit the /etc/ssh/sshd_config file to set the parameter as follows: |
| # |
| # MaxAuthTries 4 |
| |
| parameters: |
| openssh: |
| server: |
| max_auth_tries: 4 |
| |