![]() Changing theĭLT plugin allows you to convert the packets from one DLT/Layer 2 type to another type. By default, the plugin used to read packets is also usedįor output, but you can override the output plugin using the -dlt option. Each plugin may support readingĪnd/or writing packets. This not only makes the code easier to maintain, but also helps make things clearerįor users regarding what is and isn’t supported. That traffic can flow through switches, firewalls, routers, IPS’s and many otherĪs of 3.0, tcprewrite uses plugins to support different DLT/Layer 2 types. Tcprewrite supports a lot of Layer 2 rewriting options to help you modify packets so To specify a tcpprep cache file to use during processing, use the -cachefile option. Since cache files are separate from the actual pcap, you can use multipleĬache files with different processing rules for multiple passes of tcprewrite. Use of this feature allows you to select which packets are edited and which Using tcpprep cache files, you can also mark packets as to be skipped during processingīy tcprewrite. Which allows you to define direction based on a variety criteria. ![]() Packet direction is determined by consulting a tcpprep cache file, Options allow you to edit packets differently depending on the direction Direction & Selectionīefore we get to packet editing, it is important to remember that some of these rewrite ![]() $ tcprewrite -infile=input.pcap -outfile=output.pcapĪdditional arguments for actually editing packets are described below. Of the output pcap file (which will be overwritten). Running tcprewrite requires you to provide it an input pcap file and the name Hence, all the options listed below are validįor both tcprewrite and tcpreplay-edit. In 3.4.1 this editing functionality was re-introduced in tcpreplay In version 3.0, all of the packet editing functionality in tcpreplay was moved Changing Networks via Pseudo-NAT, Source/Destination IP Map.Rewriting Source & Destination MAC addresses. ![]()
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