FreeBSD offers a variety of tools for monitoring and auditing system security. Here are some notable ones:
System Monitoring Tools
top: Provides a real-time view of system processes, CPU, and memory usage.
htop: An enhanced version of `top` with a more user-friendly interface.
systat: Offers various views of system statistics, including CPU, disk, and network usage.
vmstat: Reports virtual memory statistics.
iostat: Reports on I/O statistics for devices and partitions.
netstat: Displays network connections, routing tables, and network interface statistics.
Security Auditing Tools
auditd: Provides audit logging for tracking system calls and events. It’s the audit daemon and is part of the `audit` subsystem in FreeBSD.
security/auditdistd: Distributes and collects audit logs from various machines.
osquery: Allows you to query your system using SQL queries to retrieve information about system state, file changes, and more.
ClamAV: An open-source antivirus engine for detecting malware.
Snort: A network intrusion detection system (NIDS) that monitors network traffic for suspicious activity.
Fail2ban: Scans log files for patterns indicating possible malicious activity and bans offending IPs.
Log Management
syslog: The standard logging system for capturing system messages. `syslog-ng` or `rsyslog` can be used as alternatives for enhanced functionality.
logwatch: Analyzes and reports on system log files.
logcheck: Scans logs and sends reports of any unusual activity.
File Integrity Monitoring
tripwire: A file integrity monitoring tool that detects changes to files and directories.
aide: Advanced Intrusion Detection Environment (AIDE) for monitoring file changes.
System Configuration and Hardening
sysctl: Used for querying and setting kernel parameters, which can be used for security hardening.
pf: The packet filter for firewalling and network traffic control.
smtpd: The mail server daemon with built-in security features for preventing abuse.
securelevel: A system security level setting that restricts changes to certain system parameters.
Other Tools
jail: Provides lightweight containerization to isolate applications and services for enhanced security.
sandbox: For sandboxing applications to limit their access to the system.
Ports Collection: FreeBSD Ports Collection includes numerous security tools and utilities that can be installed for additional security measures.
These tools, when used in combination, can provide comprehensive monitoring and auditing capabilities to help secure your FreeBSD system.
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