| Ensure /etc/hosts.deny is configured | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure AIDE is installed - dpkg | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure all users' home directories exist | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure at/cron is restricted to authorized users - cron.allow | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | ACCESS CONTROL |
| Ensure broadcast ICMP requests are ignored - sysctl | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure DCCP is disabled | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure GDM login banner is configured - banner-message-enable | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | ACCESS CONTROL |
| Ensure HTTP Proxy Server is not enabled | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure ICMP redirects are not accepted - /etc/sysctl ipv4 default accept | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure IMAP and POP3 server is not enabled | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure IP forwarding is disabled - /etc/sysctl | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure IPv6 router advertisements are not accepted - sysctl ipv6 default accept | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure LDAP client is not installed - dpkg | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure LDAP client is not installed - rpm | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure ntp is configured - restrict -6 | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure package manager repositories are configured - zypper | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND INFORMATION INTEGRITY |
| Ensure packet redirect sending is disabled - /etc/sysctl ipv4 default send | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure packet redirect sending is disabled - sysctl ipv4 default send | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure password expiration warning days is 7 or more | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | IDENTIFICATION AND AUTHENTICATION |
| Ensure password reuse is limited - pam_pwhistory.so | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | IDENTIFICATION AND AUTHENTICATION |
| Ensure password reuse is limited - pam_unix.so | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | IDENTIFICATION AND AUTHENTICATION |
| Ensure permissions on /etc/cron.daily are configured | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure permissions on /etc/hosts.allow are configured | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure permissions on /etc/hosts.deny are configured | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure permissions on /etc/shadow are configured | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | IDENTIFICATION AND AUTHENTICATION |
| Ensure prelink is disabled - rpm | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure remote rsyslog messages are only accepted on designated log hosts - ModLoad | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure rsh client is not installed - dpkg | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure SCTP is disabled | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure secure ICMP redirects are not accepted - /etc/sysctl ipv4 default secure | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure separate partition exists for /var/log | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY, CONFIGURATION MANAGEMENT |
| Ensure separate partition exists for /var/log/audit | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY, CONFIGURATION MANAGEMENT |
| Ensure session initiation information is collected - auditctl wtmp | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure SSH LogLevel is set to INFO | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure SSH PermitUserEnvironment is disabled | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure SSH Protocol is set to 2 | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure SSH warning banner is configured | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | ACCESS CONTROL |
| Ensure successful file system mounts are collected - auditctl b32 | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure successful file system mounts are collected - b64 | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure suspicious packets are logged - sysctl ipv4 default log_martians | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure syslog-ng is configured to send logs to a remote log host - log src | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure system is disabled when audit logs are full - 'action_mail_acct = root' | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure system is disabled when audit logs are full - 'admin_space_left_action = halt' | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure talk client is not installed - rpm | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure TCP SYN Cookies is enabled - sysctl | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure TCP Wrappers is installed - rpm | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| Ensure the audit configuration is immutable | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |
| Ensure time synchronization is in use | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure unsuccessful unauthorized file access attempts are collected - auditctl b32 EACCES | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | AUDIT AND ACCOUNTABILITY |
| Ensure users' home directories permissions are 750 or more restrictive | Tenable Cisco Firepower Management Center OS Best Practices Audit | Unix | CONFIGURATION MANAGEMENT |