Cat Karat Packet Builder is a is a handy, easy to use IP4, IP6, IP4/IP6 tunnels, PPoE, TCP, UDP, ICMPv4, ICMPv6, VRRP, IGMP, ARP, DHCP , OAM, VLAN (Q in Q), MPLS, Spanning tree BPDU and LLDP packet generation tool that allows to build custom packets for firewall or target testing and has integrated scripting ability for automated testing.
This Packet Builder enables the user to specify the entire contents of the packet from the GUI. In addition to building packets. Packet Builder also supports saving packets to packet files and sending packets to network. It can be used at all kinds of network areas like traffic generator, packet generator or protocol simulator.
This project also provides a packet capture tool. It is designed for use by anyone who wants to inject packets into a network and/or observe packets exiting a network.Usually packet operation by following protocol stack is limited to command line interface. With this tool, all user have to do is clicking the screen, which almost everybody can do.