User Guide

Related command line tools
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Example D.10. Help information available for text2pcap
$ text2pcap -h
Text2pcap 1.1.4
Generate a capture file from an ASCII hexdump of packets.
See http://www.wireshark.org for more information.
Usage: text2pcap [options] <infile> <outfile>
where <infile> specifies input filename (use - for standard input)
<outfile> specifies output filename (use - for standard output)
Input:
-o hex|oct|dec parse offsets as (h)ex, (o)ctal or (d)ecimal; default is hex.
-t <timefmt> treats the text before the packet as a date/time code;
the specified argument is a format string of the sort
supported by strptime.
Example: The time "10:15:14.5476" has the format code
"%H:%M:%S."
NOTE: The subsecond component delimiter must be given
(.) but no pattern is required; the remaining number
is assumed to be fractions of a second.
NOTE: Date/time fields from the current date/time are
used as the default for unspecified fields.
Output:
-l <typenum> link-layer type number; default is 1 (Ethernet).
See the file net/bpf.h for list of numbers.
Use this option if your dump is a complete hex dump
of an encapsulated packet and you wish to specify
the exact type of encapsulation.
Example: -l 7 for ARCNet packets.
-m <max-packet> max packet length in output; default is 64000
Prepend dummy header:
-e <l3pid> prepend dummy Ethernet II header with specified L3PID
(in HEX).
Example: -e 0x806 to specify an ARP packet.
-i <proto> prepend dummy IP header with specified IP protocol
(in DECIMAL).
Automatically prepends Ethernet header as well.
Example: -i 46
-u <srcp>,<destp> prepend dummy UDP header with specified
dest and source ports (in DECIMAL).
Automatically prepends Ethernet & IP headers as well.
Example: -u 1000 69 to make the packets look like TFTP/UDP packets.
-T <srcp>,<destp> prepend dummy TCP header with specified
dest and source ports (in DECIMAL).
Automatically prepends Ethernet & IP headers as well.
Example: -T 50,60
-s <srcp>,<dstp>,<tag> prepend dummy SCTP header with specified
dest/source ports and verification tag (in DECIMAL).
Automatically prepends Ethernet & IP headers as well.
Example: -s 30,40,34
-S <srcp>,<dstp>,<ppi> prepend dummy SCTP header with specified
dest/source ports and verification tag 0.
Automatically prepends a dummy SCTP DATA
chunk header with payload protocol identifier ppi.
Example: -S 30,40,34
Miscellaneous:
-h display this help and exit.
-d detailed debug of parser states.
-q generate no output at all (automatically turns off -d).