Transcription of TCPDUMP filters
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TCPDUMP filters
TCPDUMP filters expression selects which packets will be dumped. If no expression is given, all packets on the net will be dumped. Otherwise, only packets for which expres sion is `true' will be dumped. ber) preceded by one or more qualifiers. There are three different kinds of qualifier: type qualifiers say what kind of thing the id name or number refers to. Possible types are host, net and port. , `host foo', `net ', `port 20'. If there is no type qualifier, host is assumed. dir qualifiers specify a particular transfer direction to and/or from id. Possible directions are src, dst, src or dst and src and dst.
TCPDUMP filters expression selects which packets will be dumped. If no expression is given, all packets on the net will be dumped. Otherwise, only packets for which expres sion is `true' will be dumped. ber) preceded by one or more qualifiers.
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