One of the requirements is to use a system auditing tool to monitor and log all security-relevant events.
`auditd` allows to collect and store detailed information about system events, such as user login attempts, file modifications, and network connections
An operator must not have access to this log, will be extended when we return ``administrator and `operator` access user levels
https://doc.opensuse.org/documentation/leap/security/html/book-security/cha-audit-setup.html
```
root@r14:/home/vyos# cat /etc/audit/auditd.conf
#
# This file controls the configuration of the audit daemon
#
local_events = yes
write_logs = yes
log_file = /var/log/audit/audit.log
log_group = adm
log_format = ENRICHED
flush = INCREMENTAL_ASYNC
freq = 50
max_log_file = 8
num_logs = 5
priority_boost = 4
name_format = NONE
##name = mydomain
max_log_file_action = ROTATE
space_left = 75
space_left_action = SYSLOG
verify_email = yes
action_mail_acct = root
admin_space_left = 50
admin_space_left_action = SUSPEND
disk_full_action = SUSPEND
disk_error_action = SUSPEND
use_libwrap = yes
##tcp_listen_port = 60
tcp_listen_queue = 5
tcp_max_per_addr = 1
##tcp_client_ports = 1024-65535
tcp_client_max_idle = 0
transport = TCP
krb5_principal = auditd
##krb5_key_file = /etc/audit/audit.key
distribute_network = no
q_depth = 2000
overflow_action = SYSLOG
max_restarts = 10
plugin_dir = /etc/audit/plugins.d
end_of_event_timeout = 2
```
Report
```
root@r14:/home/vyos# sudo aureport
Summary Report
======================
Range of time in logs: 04/03/2023 21:12:24.277 - 04/03/2023 21:28:30.093
Selected time for report: 04/03/2023 21:12:24 - 04/03/2023 21:28:30.093
Number of changes in configuration: 3
Number of changes to accounts, groups, or roles: 0
Number of logins: 1
Number of failed logins: 5
Number of authentications: 1
Number of failed authentications: 3
Number of users: 4
Number of terminals: 12
Number of host names: 2
Number of executables: 6
Number of commands: 4
Number of files: 0
Number of AVC's: 0
Number of MAC events: 0
Number of failed syscalls: 0
Number of anomaly events: 0
Number of responses to anomaly events: 0
Number of crypto events: 0
Number of integrity events: 0
Number of virt events: 0
Number of keys: 0
Number of process IDs: 20
Number of events: 88
root@r14:/home/vyos#
```