JpcapJpcap 
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Jpcap (JpcapSetup-0.7.exe). Jpcap can capture Ethernet, IPv4, IPv6, ARP/RARP, TCP, UDP, and ICMPv4 packets.
Explore a robust collection of instruments for capturing and processing packets across diverse connections and environments. Work with cross-platform materials compatible with Ethernet, IPv4, IPv6, ARP/RARP, TCP, UDP, and ICMPv4 while configuring detailed detection and extraction parameters. Ideal for developers needing a reliable network packet analyzer for Java, real-time network monitoring tool, or cross-platform packet sniffing library.
Jpcap is a Java library for capturing and sending network packets. With Jpcap, you can build applications that capture packets from a network interface and visualize or analyze them directly in Java. You can also create Java applications that send arbitrary packets through any supported network interface, making it an essential toolkit for open-source networking projects and advanced protocol testing.