domains / families / security / detecting-port-scanning-with-fail2ban

detecting-port-scanning-with-fail2ban

separate

'Configures Fail2ban with custom filters and actions to detect port scanning

When to use

• Automatically blocking IP addresses that perform port scans against internet-facing servers
• Defending SSH, HTTP, FTP, and other services against brute force attacks with automated IP banning
• Creating custom detection filters for organization-specific attack patterns in log files
• Reducing noise from automated scanning bots before traffic reaches IDS/IPS for deeper analysis
• Implementing defense-in-depth by adding host-based automated response to network monitoring

When not to use

• Sole network security control
• Protecting against distributed attacks from many source IPs
• Replacement for proper firewall rules and network segmentation

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