Fail2ban
Fail2ban is a daemon that monitors log files for suspicious activity and automatically implements IP address bans through firewall rule modifications. The tool scans various log files to identify patterns indicative of malicious behavior, such as repeated authentication failures, brute-force attempts, and other attack signatures. When suspicious activity is detected from a specific IP address, Fail2ban temporarily blocks that address by updating firewall rules. The daemon operates by parsing log entries in real-time and applying configurable filters to identify potential threats. It supports multiple services including SSH, HTTP, FTP, and other network services that generate log entries. The tool can be configured with custom rules, ban durations, and threshold settings to match specific security requirements. Fail2ban integrates with various firewall systems including iptables, firewalld, and other packet filtering mechanisms. It maintains a database of banned IP addresses and can automatically remove bans after specified time periods. The tool also supports whitelisting of trusted IP addresses to prevent accidental blocking of legitimate traffic.
FEATURES
EXPLORE BY TAGS
SIMILAR TOOLS
NordVPN is a commercial VPN service that encrypts internet connections and hides IP addresses through a global network of servers, featuring integrated threat protection and multi-device support.
A website scanner that provides a sandbox for the web, allowing users to scan URLs and websites for potential threats and vulnerabilities.
A Bluetooth 5 and 4.x sniffer using TI CC1352/CC26x2 hardware with advanced features and Python-based host-side software.
WiGLE.net is a platform that collects and provides data on WiFi networks and cell towers, with over 1.3 billion networks collected.
A TCP-based traceroute implementation that bypasses firewall filters to trace the path to a destination.
Tcpreplay is a suite of Open Source utilities for editing and replaying captured network traffic.
A userland implementation of the Network Block Device protocol that enables remote block device access over network connections for distributed storage and virtualization use cases.
Suricata offers real-time intrusion detection, intrusion prevention, and network monitoring.
A free DNS recursive service that blocks malicious host names and protects user privacy.
PINNED
Proton Pass is a cross-platform password manager that provides encrypted storage, password generation, and security monitoring features with integrated 2FA and dark web monitoring capabilities.
NordVPN is a commercial VPN service that encrypts internet connections and hides IP addresses through a global network of servers, featuring integrated threat protection and multi-device support.
Fractional CISO service that helps B2B companies implement security leadership to win enterprise deals, achieve compliance, and develop strategic security programs.
Checkmarx SCA
A software composition analysis tool that identifies vulnerabilities, malicious code, and license risks in open source dependencies throughout the software development lifecycle.
Orca Security
A cloud-native application protection platform that provides agentless security monitoring, vulnerability management, and compliance capabilities across multi-cloud environments.
DryRun
A GitHub application that performs automated security code reviews by analyzing contextual security aspects of code changes during pull requests.