Definition of Fedora Common User Security Policy for fedora

1.1: Protection of the BIOS or UEFI

Description: Users should protect their BIOS or UEFI with a password.

Levels:

default

Automated: no

No rules selected

1.2: Proper BIOS or UEFI Configuration

Description: Users should disable features and devices in the BIOS or UEFI that are not in use and should only include trusted devices in the boot order.

Levels:

default

Automated: no

No rules selected

1.3: 64-bit OS

Description: When possible, users should use a 64-bit system and hardware that supports it.

Levels:

default

Automated: no

No rules selected

2.1: Security Policy Selection

Description: Users should apply the Fedora Common User Security Policy in the installer.

Levels:

default

Automated: no

No rules selected

2.2: Disk Partitioning

Description: Users should put the /home, /tmp, /var, /var/tmp and /var/log directories on separate partitions.

Levels:

default

Automated: no

No rules selected

2.3: Password Security

Description: Users should ensure that all account passwords adhere to the password rules in rule 4.1.

Levels:

default

Automated: no

No rules selected

2.4: Disk Encryption

Description: Users should encrypt their disk with a passphrase that adheres to the password rules in rule 4.1.

Levels:

default

Automated: no

No rules selected

3.1: Bootloader Security

Description: If the BIOS or UEFI does not allow password protection of the boot process, users should set a bootloader password.

Levels:

default

Automated: no

Selections:

file_groupowner_efi_grub2_cfg: Verify the UEFI Boot Loader grub.cfg Group Ownership
file_groupowner_efi_user_cfg: Verify /boot/grub2/user.cfg Group Ownership
file_groupowner_grub2_cfg: Verify /boot/grub2/grub.cfg Group Ownership
file_groupowner_user_cfg: Verify /boot/grub2/user.cfg Group Ownership
file_owner_efi_grub2_cfg: Verify the UEFI Boot Loader grub.cfg User Ownership
file_owner_efi_user_cfg: Verify /boot/grub2/user.cfg User Ownership
file_owner_grub2_cfg: Verify /boot/grub2/grub.cfg User Ownership
file_owner_user_cfg: Verify /boot/grub2/user.cfg User Ownership
file_permissions_efi_grub2_cfg: Verify the UEFI Boot Loader grub.cfg Permissions
file_permissions_efi_user_cfg: Verify /boot/grub2/user.cfg Permissions
file_permissions_grub2_cfg: Verify /boot/grub2/grub.cfg Permissions
file_permissions_user_cfg: Verify /boot/grub2/user.cfg Permissions
grub2_password: Set Boot Loader Password in grub2
grub2_uefi_password: Set the UEFI Boot Loader Password

3.2: Software Updates

Description: Users should apply updates from the GNOME Software application at least once per day.

Levels:

default

Automated: no

Selections:

package_gnome_software_installed: Install GNOME Software

3.3: Filesystem Configuration

Description: Directories /home (-noexec), /tmp, /var, /var/tmp and /var/log mount option configuration.

Levels:

default

Automated: yes

Selections:

kernel_module_cramfs_disabled: Disable Mounting of cramfs
kernel_module_squashfs_disabled: Disable Mounting of squashfs
kernel_module_udf_disabled: Disable Mounting of udf
mount_option_home_nodev: Add nodev Option to /home
mount_option_home_nosuid: Add nosuid Option to /home

3.4: Crypto Policy

Description: System cryto policy configuation and ensuring it is not overridden in critical components.

Levels:

default

Automated: yes

Selections:

configure_bind_crypto_policy: Configure BIND to use System Crypto Policy
configure_crypto_policy: Configure System Cryptography Policy
configure_gnutls_tls_crypto_policy: Configure GnuTLS library to use DoD-approved TLS Encryption
configure_kerberos_crypto_policy: Configure Kerberos to use System Crypto Policy
configure_libreswan_crypto_policy: Configure Libreswan to use System Crypto Policy
configure_openssl_crypto_policy: Configure OpenSSL library to use System Crypto Policy
configure_ssh_crypto_policy: Configure SSH to use System Crypto Policy
var_system_crypto_policy = default_policy

3.5: Auditing and Logging

Description: Auditd and journald configutation.

Levels:

default

Automated: yes

Selections:

audit_rules_dac_modification_chmod: Record Events that Modify the System's Discretionary Access Controls - chmod
audit_rules_dac_modification_chown: Record Events that Modify the System's Discretionary Access Controls - chown
audit_rules_dac_modification_fchmod: Record Events that Modify the System's Discretionary Access Controls - fchmod
audit_rules_dac_modification_fchmodat: Record Events that Modify the System's Discretionary Access Controls - fchmodat
audit_rules_dac_modification_fchown: Record Events that Modify the System's Discretionary Access Controls - fchown
audit_rules_dac_modification_fchownat: Record Events that Modify the System's Discretionary Access Controls - fchownat
audit_rules_dac_modification_fremovexattr: Record Events that Modify the System's Discretionary Access Controls - fremovexattr
audit_rules_dac_modification_fsetxattr: Record Events that Modify the System's Discretionary Access Controls - fsetxattr
audit_rules_dac_modification_lchown: Record Events that Modify the System's Discretionary Access Controls - lchown
audit_rules_dac_modification_lremovexattr: Record Events that Modify the System's Discretionary Access Controls - lremovexattr
audit_rules_dac_modification_lsetxattr: Record Events that Modify the System's Discretionary Access Controls - lsetxattr
audit_rules_dac_modification_removexattr: Record Events that Modify the System's Discretionary Access Controls - removexattr
audit_rules_dac_modification_setxattr: Record Events that Modify the System's Discretionary Access Controls - setxattr
audit_rules_execution_chacl: Record Any Attempts to Run chacl
audit_rules_execution_chcon: Record Any Attempts to Run chcon
audit_rules_execution_setfacl: Record Any Attempts to Run setfacl
audit_rules_file_deletion_events_rename: Ensure auditd Collects File Deletion Events by User - rename
audit_rules_file_deletion_events_renameat: Ensure auditd Collects File Deletion Events by User - renameat
audit_rules_file_deletion_events_unlink: Ensure auditd Collects File Deletion Events by User - unlink
audit_rules_file_deletion_events_unlinkat: Ensure auditd Collects File Deletion Events by User - unlinkat
audit_rules_immutable: Make the auditd Configuration Immutable
audit_rules_kernel_module_loading_delete: Ensure auditd Collects Information on Kernel Module Unloading - delete_module
audit_rules_kernel_module_loading_init: Ensure auditd Collects Information on Kernel Module Loading - init_module
audit_rules_login_events_faillock: Record Attempts to Alter Logon and Logout Events - faillock
audit_rules_login_events_lastlog: Record Attempts to Alter Logon and Logout Events - lastlog
audit_rules_mac_modification: Record Events that Modify the System's Mandatory Access Controls
audit_rules_mac_modification_usr_share: Record Events that Modify the System's Mandatory Access Controls in usr/share
audit_rules_media_export: Ensure auditd Collects Information on Exporting to Media (successful)
audit_rules_networkconfig_modification: Record Events that Modify the System's Network Environment
audit_rules_privileged_commands: Ensure auditd Collects Information on the Use of Privileged Commands
audit_rules_privileged_commands_usermod: Ensure auditd Collects Information on the Use of Privileged Commands - usermod
audit_rules_session_events: Record Attempts to Alter Process and Session Initiation Information
audit_rules_sudoers: Ensure auditd Collects System Administrator Actions - /etc/sudoers
audit_rules_sudoers_d: Ensure auditd Collects System Administrator Actions - /etc/sudoers.d/
audit_rules_suid_privilege_function: Record Events When Privileged Executables Are Run
audit_rules_sysadmin_actions: Ensure auditd Collects System Administrator Actions
audit_rules_time_adjtimex: Record attempts to alter time through adjtimex
audit_rules_time_clock_settime: Record Attempts to Alter Time Through clock_settime
audit_rules_time_settimeofday: Record attempts to alter time through settimeofday
audit_rules_time_stime: Record Attempts to Alter Time Through stime
audit_rules_time_watch_localtime: Record Attempts to Alter the localtime File
audit_rules_unsuccessful_file_modification_creat: Record Unsuccessful Access Attempts to Files - creat
audit_rules_unsuccessful_file_modification_ftruncate: Record Unsuccessful Access Attempts to Files - ftruncate
audit_rules_unsuccessful_file_modification_open: Record Unsuccessful Access Attempts to Files - open
audit_rules_unsuccessful_file_modification_openat: Record Unsuccessful Access Attempts to Files - openat
audit_rules_unsuccessful_file_modification_truncate: Record Unsuccessful Access Attempts to Files - truncate
audit_rules_usergroup_modification_group: Record Events that Modify User/Group Information - /etc/group
audit_rules_usergroup_modification_gshadow: Record Events that Modify User/Group Information - /etc/gshadow
audit_rules_usergroup_modification_opasswd: Record Events that Modify User/Group Information - /etc/security/opasswd
audit_rules_usergroup_modification_passwd: Record Events that Modify User/Group Information - /etc/passwd
audit_rules_usergroup_modification_shadow: Record Events that Modify User/Group Information - /etc/shadow
audit_sudo_log_events: Record Attempts to perform maintenance activities
auditd_data_retention_max_log_file: Configure auditd Max Log File Size
auditd_data_retention_max_log_file_action: Configure auditd max_log_file_action Upon Reaching Maximum Log Size
grub2_audit_argument: Enable Auditing for Processes Which Start Prior to the Audit Daemon
grub2_audit_backlog_limit_argument: Extend Audit Backlog Limit for the Audit Daemon
journald_compress: Ensure journald is configured to compress large log files
journald_storage: Ensure journald is configured to write log files to persistent disk
package_audit_installed: Ensure the audit Subsystem is Installed
service_auditd_enabled: Enable auditd Service
service_systemd-journald_enabled: Enable systemd-journald Service
socket_systemd-journal-remote_disabled: Disable systemd-journal-remote Socket
var_auditd_max_log_file = 6
var_auditd_max_log_file_action = rotate

3.6: Files, Permissions, and Ownership

Description: User and critical system file permissions and ownership, user and group file and directory ownership, identifiers.

Levels:

default

Automated: no

Selections:

account_unique_id: Ensure All Accounts on the System Have Unique User IDs
account_unique_name: Ensure All Accounts on the System Have Unique Names
accounts_no_uid_except_zero: Verify Only Root Has UID 0
accounts_root_path_dirs_no_write: Ensure that Root's Path Does Not Include World or Group-Writable Directories
accounts_user_dot_no_world_writable_programs: User Initialization Files Must Not Run World-Writable Programs
accounts_user_interactive_home_directory_exists: All Interactive Users Home Directories Must Exist
dir_perms_world_writable_sticky_bits: Verify that All World-Writable Directories Have Sticky Bits Set
file_groupowner_backup_etc_group: Verify Group Who Owns Backup group File
file_groupowner_backup_etc_gshadow: Verify Group Who Owns Backup gshadow File
file_groupowner_backup_etc_passwd: Verify Group Who Owns Backup passwd File
file_groupowner_backup_etc_shadow: Verify User Who Owns Backup shadow File
file_groupowner_etc_group: Verify Group Who Owns group File
file_groupowner_etc_gshadow: Verify Group Who Owns gshadow File
file_groupowner_etc_passwd: Verify Group Who Owns passwd File
file_groupowner_etc_shadow: Verify Group Who Owns shadow File
file_groupownership_home_directories: All Interactive User Home Directories Must Be Group-Owned By The Primary Group
file_owner_backup_etc_group: Verify User Who Owns Backup group File
file_owner_backup_etc_gshadow: Verify User Who Owns Backup gshadow File
file_owner_backup_etc_passwd: Verify User Who Owns Backup passwd File
file_owner_backup_etc_shadow: Verify Group Who Owns Backup shadow File
file_owner_etc_group: Verify User Who Owns group File
file_owner_etc_gshadow: Verify User Who Owns gshadow File
file_owner_etc_passwd: Verify User Who Owns passwd File
file_owner_etc_shadow: Verify User Who Owns shadow File
file_ownership_home_directories: All Interactive User Home Directories Must Be Owned By The Primary User
file_permissions_backup_etc_group: Verify Permissions on Backup group File
file_permissions_backup_etc_gshadow: Verify Permissions on Backup gshadow File
file_permissions_backup_etc_passwd: Verify Permissions on Backup passwd File
file_permissions_backup_etc_shadow: Verify Permissions on Backup shadow File
file_permissions_etc_group: Verify Permissions on group File
file_permissions_etc_gshadow: Verify Permissions on gshadow File
file_permissions_etc_passwd: Verify Permissions on passwd File
file_permissions_etc_shadow: Verify Permissions on shadow File
file_permissions_home_directories: All Interactive User Home Directories Must Have mode 0750 Or Less Permissive
file_permissions_unauthorized_world_writable: Ensure No World-Writable Files Exist
file_permissions_ungroupowned: Ensure All Files Are Owned by a Group
gid_passwd_group_same: All GIDs referenced in /etc/passwd must be defined in /etc/group
group_unique_id: Ensure All Groups on the System Have Unique Group ID
group_unique_name: Ensure All Groups on the System Have Unique Group Names
no_empty_passwords_etc_shadow: Ensure There Are No Accounts With Blank or Null Passwords
no_files_unowned_by_user: Ensure All Files Are Owned by a User

3.7: Memory Protection

Description: Enable ASLR and ExecShield, restrict exposed kernel pointer.

Levels:

default

Automated: yes

Selections:

sysctl_kernel_exec_shield: Enable ExecShield via sysctl
sysctl_kernel_kptr_restrict: Restrict Exposed Kernel Pointer Addresses Access
sysctl_kernel_randomize_va_space: Enable Randomized Layout of Virtual Address Space

3.8: GUI Configuration

Description: Do not show user list, disable xdmpc and auto login, set up idle lock and protect the settings.

Levels:

default

Automated: yes

Selections:

gnome_gdm_disable_automatic_login: Disable GDM Automatic Login
gnome_gdm_disable_xdmcp: Disable XDMCP in GDM

3.9: Time and Schedulers

Description: Chrony and time-based scheduler security configuration.

Levels:

default

Automated: yes

Selections:

chronyd_client_only: Disable chrony daemon from acting as server
chronyd_no_chronyc_network: Disable network management of chrony daemon
chronyd_or_ntpd_set_maxpoll: Configure Time Service Maxpoll Interval
chronyd_run_as_chrony_user: Ensure that chronyd is running under chrony user account
chronyd_specify_remote_server: A remote time server for Chrony is configured
file_groupowner_at_allow: Verify Group Who Owns /etc/at.allow file
file_groupowner_cron_allow: Verify Group Who Owns /etc/cron.allow file
file_groupowner_cron_d: Verify Group Who Owns cron.d
file_groupowner_cron_daily: Verify Group Who Owns cron.daily
file_groupowner_cron_hourly: Verify Group Who Owns cron.hourly
file_groupowner_cron_monthly: Verify Group Who Owns cron.monthly
file_groupowner_cron_weekly: Verify Group Who Owns cron.weekly
file_groupowner_crontab: Verify Group Who Owns Crontab
file_owner_at_allow: Verify User Who Owns /etc/at.allow file
file_owner_cron_allow: Verify User Who Owns /etc/cron.allow file
file_owner_cron_d: Verify Owner on cron.d
file_owner_cron_daily: Verify Owner on cron.daily
file_owner_cron_hourly: Verify Owner on cron.hourly
file_owner_cron_monthly: Verify Owner on cron.monthly
file_owner_cron_weekly: Verify Owner on cron.weekly
file_owner_crontab: Verify Owner on crontab
file_permissions_at_allow: Verify Permissions on /etc/at.allow file
file_permissions_cron_allow: Verify Permissions on /etc/cron.allow file
file_permissions_cron_d: Verify Permissions on cron.d
file_permissions_cron_daily: Verify Permissions on cron.daily
file_permissions_cron_hourly: Verify Permissions on cron.hourly
file_permissions_cron_monthly: Verify Permissions on cron.monthly
file_permissions_cron_weekly: Verify Permissions on cron.weekly
file_permissions_crontab: Verify Permissions on crontab

3.10: Service Minimization

Description: Users should remove any services that are not necessary for normal system usage.

Levels:

default

Automated: no

Selections:

package_bind_removed: Uninstall bind Package
package_cyrus-imapd_removed: Uninstall cyrus-imapd Package
package_dhcp_removed: Uninstall DHCP Server Package
package_dovecot_removed: Uninstall dovecot Package
package_httpd_removed: Uninstall httpd Package
package_net-snmp_removed: Uninstall net-snmp Package
package_nginx_removed: Uninstall nginx Package
package_rsh-server_removed: Uninstall rsh-server Package
package_rsh_removed: Uninstall rsh Package
package_rsync_removed: Uninstall rsync Package
package_samba_removed: Uninstall Samba Package
package_sendmail_removed: Uninstall Sendmail Package
package_squid_removed: Uninstall squid Package
package_talk-server_removed: Uninstall talk-server Package
package_talk_removed: Uninstall talk Package
package_telnet-server_removed: Uninstall telnet-server Package
package_telnet_removed: Remove telnet Clients
package_tftp-server_removed: Uninstall tftp-server Package
package_tftp_removed: Remove tftp Daemon
package_vsftpd_removed: Uninstall vsftpd Package
package_xinetd_removed: Uninstall xinetd Package
package_ypbind_removed: Remove NIS Client
package_ypserv_removed: Uninstall ypserv Package
service_nfs_disabled: Disable Network File System (nfs)
service_rpcbind_disabled: Disable rpcbind Service

4.1: Account Protection

Description: All account passwords must be passphrases of at least 4 words and 15 characters with at least three character classes, generated with a large wordlist and a source of randomness.

Levels:

default

Automated: no

Selections:

account_password_selinux_faillock_dir: An SELinux Context must be configured for the pam_faillock.so records directory
accounts_password_pam_difok: Ensure PAM Enforces Password Requirements - Minimum Different Characters
accounts_password_pam_maxrepeat: Set Password Maximum Consecutive Repeating Characters
accounts_password_pam_minclass: Ensure PAM Enforces Password Requirements - Minimum Different Categories
accounts_password_pam_minlen: Ensure PAM Enforces Password Requirements - Minimum Length
accounts_password_pam_pwquality_password_auth: Ensure PAM password complexity module is enabled in password-auth
accounts_password_pam_pwquality_system_auth: Ensure PAM password complexity module is enabled in system-auth
accounts_password_pam_retry: Ensure PAM Enforces Password Requirements - Authentication Retry Prompts Permitted Per-Session
accounts_root_gid_zero: Verify Root Has A Primary GID 0
accounts_tmout: Set Interactive Session Timeout
accounts_umask_etc_bashrc: Ensure the Default Bash Umask is Set Correctly
accounts_umask_etc_login_defs: Ensure the Default Umask is Set Correctly in login.defs
accounts_umask_etc_profile: Ensure the Default Umask is Set Correctly in /etc/profile
enable_authselect: Enable authselect
no_empty_passwords: Prevent Login to Accounts With Empty Password
set_password_hashing_algorithm_logindefs: Set Password Hashing Algorithm in /etc/login.defs
set_password_hashing_algorithm_passwordauth: Set PAM''s Password Hashing Algorithm - password-auth
set_password_hashing_algorithm_systemauth: Set PAM''s Password Hashing Algorithm
var_accounts_tmout = 15_min
var_accounts_user_umask = 027
var_password_hashing_algorithm = SHA512
var_password_hashing_algorithm_pam = sha512
var_password_pam_difok = 8
var_password_pam_minclass = 3
var_password_pam_minlen = 15
var_password_pam_remember = 5
var_password_pam_remember_control_flag = requisite_or_required

4.2: Sudo

Description: Secure sudo configuration.

Levels:

default

Automated: yes

Selections:

package_sudo_installed: Install sudo Package
sudo_add_use_pty: Ensure Only Users Logged In To Real tty Can Execute Sudo - sudo use_pty
sudo_custom_logfile: Ensure Sudo Logfile Exists - sudo logfile
sudo_require_authentication: Ensure Users Re-Authenticate for Privilege Escalation - sudo
sudo_require_reauthentication: Require Re-Authentication When Using the sudo Command
sudoers_default_includedir: Ensure sudo only includes the default configuration directory
use_pam_wheel_for_su: Enforce usage of pam_wheel for su authentication

4.3: SSH Server

Description: Secure ssh server configuration.

Levels:

default

Automated: yes

Selections:

disable_host_auth: Disable Host-Based Authentication
file_groupowner_sshd_config: Verify Group Who Owns SSH Server config file
file_owner_sshd_config: Verify Owner on SSH Server config file
file_permissions_sshd_config: Verify Permissions on SSH Server config file
file_permissions_sshd_private_key: Verify Permissions on SSH Server Private *_key Key Files
file_permissions_sshd_pub_key: Verify Permissions on SSH Server Public *.pub Key Files
sshd_disable_empty_passwords: Disable SSH Access via Empty Passwords
sshd_disable_gssapi_auth: Disable GSSAPI Authentication
sshd_disable_kerb_auth: Disable Kerberos Authentication
sshd_disable_rhosts: Disable SSH Support for .rhosts Files
sshd_disable_root_login: Disable SSH Root Login
sshd_disable_tcp_forwarding: Disable SSH TCP Forwarding
sshd_disable_x11_forwarding: Disable X11 Forwarding
sshd_do_not_permit_user_env: Do Not Allow SSH Environment Options
sshd_enable_pam: Enable PAM
sshd_enable_strictmodes: Enable Use of Strict Mode Checking
sshd_idle_timeout_value = 15_minutes
sshd_max_auth_tries_value = 4
sshd_rekey_limit: Force frequent session key renegotiation
sshd_set_idle_timeout: Set SSH Client Alive Interval
sshd_set_keepalive: Set SSH Client Alive Count Max
sshd_set_keepalive_0: Set SSH Client Alive Count Max to zero
sshd_set_login_grace_time: Ensure SSH LoginGraceTime is configured
sshd_set_loglevel_verbose: Set SSH Daemon LogLevel to VERBOSE
sshd_set_max_auth_tries: Set SSH authentication attempt limit
sshd_set_max_sessions: Set SSH MaxSessions limit
sshd_set_maxstartups: Ensure SSH MaxStartups is configured
sshd_use_strong_rng: SSH server uses strong entropy to seed
sshd_x11_use_localhost: Prevent remote hosts from connecting to the proxy display
var_rekey_limit_size = 1G
var_rekey_limit_time = 1hour
var_sshd_max_sessions = 10
var_sshd_set_keepalive = 0
var_sshd_set_login_grace_time = 60
var_sshd_set_maxstartups = 10:30:60

5.1: General Network Configuration

Description: If users did not configure IPv6 on the system and it is not needed, it should be disabled.

Levels:

default

Automated: no

Selections:

kernel_module_dccp_disabled: Disable DCCP Support
kernel_module_sctp_disabled: Disable SCTP Support
sysctl_net_ipv4_conf_all_accept_redirects: Disable Accepting ICMP Redirects for All IPv4 Interfaces
sysctl_net_ipv4_conf_all_accept_redirects_value = disabled
sysctl_net_ipv4_conf_all_accept_source_route: Disable Kernel Parameter for Accepting Source-Routed Packets on all IPv4 Interfaces
sysctl_net_ipv4_conf_all_accept_source_route_value = disabled
sysctl_net_ipv4_conf_all_log_martians: Enable Kernel Parameter to Log Martian Packets on all IPv4 Interfaces
sysctl_net_ipv4_conf_all_log_martians_value = enabled
sysctl_net_ipv4_conf_all_rp_filter: Enable Kernel Parameter to Use Reverse Path Filtering on all IPv4 Interfaces
sysctl_net_ipv4_conf_all_rp_filter_value = enabled
sysctl_net_ipv4_conf_all_secure_redirects: Disable Kernel Parameter for Accepting Secure ICMP Redirects on all IPv4 Interfaces
sysctl_net_ipv4_conf_all_secure_redirects_value = disabled
sysctl_net_ipv4_conf_all_send_redirects: Disable Kernel Parameter for Sending ICMP Redirects on all IPv4 Interfaces
sysctl_net_ipv4_conf_default_accept_redirects: Disable Kernel Parameter for Accepting ICMP Redirects by Default on IPv4 Interfaces
sysctl_net_ipv4_conf_default_accept_redirects_value = disabled
sysctl_net_ipv4_conf_default_accept_source_route: Disable Kernel Parameter for Accepting Source-Routed Packets on IPv4 Interfaces by Default
sysctl_net_ipv4_conf_default_accept_source_route_value = disabled
sysctl_net_ipv4_conf_default_log_martians: Enable Kernel Paremeter to Log Martian Packets on all IPv4 Interfaces by Default
sysctl_net_ipv4_conf_default_log_martians_value = enabled
sysctl_net_ipv4_conf_default_rp_filter: Enable Kernel Parameter to Use Reverse Path Filtering on all IPv4 Interfaces by Default
sysctl_net_ipv4_conf_default_rp_filter_value = enabled
sysctl_net_ipv4_conf_default_secure_redirects: Configure Kernel Parameter for Accepting Secure Redirects By Default
sysctl_net_ipv4_conf_default_secure_redirects_value = disabled
sysctl_net_ipv4_conf_default_send_redirects: Disable Kernel Parameter for Sending ICMP Redirects on all IPv4 Interfaces by Default
sysctl_net_ipv4_icmp_echo_ignore_broadcasts: Enable Kernel Parameter to Ignore ICMP Broadcast Echo Requests on IPv4 Interfaces
sysctl_net_ipv4_icmp_echo_ignore_broadcasts_value = enabled
sysctl_net_ipv4_icmp_ignore_bogus_error_responses: Enable Kernel Parameter to Ignore Bogus ICMP Error Responses on IPv4 Interfaces
sysctl_net_ipv4_icmp_ignore_bogus_error_responses_value = enabled
sysctl_net_ipv4_tcp_syncookies: Enable Kernel Parameter to Use TCP Syncookies on Network Interfaces
sysctl_net_ipv4_tcp_syncookies_value = enabled
sysctl_net_ipv6_conf_all_accept_redirects: Disable Accepting ICMP Redirects for All IPv6 Interfaces
sysctl_net_ipv6_conf_all_accept_redirects_value = disabled
sysctl_net_ipv6_conf_all_accept_source_route: Disable Kernel Parameter for Accepting Source-Routed Packets on all IPv6 Interfaces
sysctl_net_ipv6_conf_all_accept_source_route_value = disabled
sysctl_net_ipv6_conf_default_accept_redirects: Disable Kernel Parameter for Accepting ICMP Redirects by Default on IPv6 Interfaces
sysctl_net_ipv6_conf_default_accept_redirects_value = disabled
sysctl_net_ipv6_conf_default_accept_source_route: Disable Kernel Parameter for Accepting Source-Routed Packets on IPv6 Interfaces by Default
sysctl_net_ipv6_conf_default_accept_source_route_value = disabled

5.2: Firewall Configuration

Description: Users should ensure that all network interfaces are in the appropriate firewall zone and that ports and services allowed by the firewall are reduced to the necessary minimum.

Levels:

default

Automated: no

Selections:

package_firewalld_installed: Install firewalld Package
service_firewalld_enabled: Verify firewalld Enabled
service_nftables_disabled: Verify nftables Service is Disabled

6.1: Web Browser

Description: Users should install the Firefox Flatpak from FlatHub and use it instead of the default Firefox application. If the default Firefox application must be used, the users should apply the Common User Security Profile for Mozilla Firefox CaC profile.

Levels:

default

Automated: no

No rules selected

7.1: Mandatory Access Control

Description: Ensure SELinux is installed and enabled, in enforcing mode using targeted policy.

Levels:

default

Automated: no

Selections:

grub2_enable_selinux: Ensure SELinux Not Disabled in /etc/default/grub
package_libselinux_installed: Install libselinux Package
package_mcstrans_removed: Uninstall mcstrans Package
selinux_policytype: Configure SELinux Policy
selinux_state: Ensure SELinux State is Enforcing
sysctl_fs_protected_hardlinks: Enable Kernel Parameter to Enforce DAC on Hardlinks
sysctl_fs_protected_symlinks: Enable Kernel Parameter to Enforce DAC on Symlinks
var_selinux_policy_name = targeted
var_selinux_state = enforcing

7.2: Periodic Compliance Scans

Description: Users should perform periodic system scans and remediations with the Common User Security Profile by using the oscap tool or SCAP Workbench.

Levels:

default

Automated: no

No rules selected