Libnet is an API that assists in the construction and injection of network packets, providing a portable framework for low-level network packet writing and handling. It includes packet creation at the IP and link layers, as well as supplementary functionality. Legacy code written for libnet-1.0.x is incompatible with libnet-1.1.x and later versions.
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OpenSnitch is a GNU/Linux application firewall with interactive outbound connections filtering and system-wide domain blocking capabilities.
A KDE Plasma 4 widget that displays real-time traffic information for active network connections on Linux computers.
Nebula is a scalable overlay networking tool emphasizing performance, simplicity, and security.
A technique to encode data within DNS queries for covert communication channels.
SSHGuard protects hosts from brute-force attacks by monitoring system logs, detecting attacks, and blocking attackers using a firewall.
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