This filter will be applied for the next capture. In this window a capture filter can be set: This language is explained in the tcpdump man page ( Procedureįor configuing a capture filter open the "Capture Options" window from the menu "Capture" -> "Options". Wireshark as well as Ethereal do use the pcap filter language for capture filters. This is done to reduce the size of the resulting capture (file) and is especially useful on high traffic networks or for long term capturing. The free ethernet analyzer Wireshark do offer a capture filter that allows capturing telegrams on an IP network based on the source- and destination station or the TCP- or UDP port.Ĭapture Filters are used to filter out uninteresting packets already at capture time.
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