IPGRAB(8)						IPGRAB(8)


NAME
       ipgrab - A Verbose Packet Sniffer


SYNOPSIS
       ipgrab [ -blmnpt ] [ -c cnt ] [ -i if ] [ expr ]


DESCRIPTION
       ipgrab  reads  and  parses  packets  from  the  link layer
       through the application	layer,	dumping	 explicit  header
       information  along  the	way.   It  is  a lot like tcpdump
       except that it prints almost every header field.


   Options
       -b     Buffer standard output. Useful  when  you're  redi-
	      recting output to a file.

       -l     Don't print link-layer headers.

       -m     Minimal IP/TCP/UDP output.

       -n     Don't print network-layer headers.

       -p     Print packet payloads.

       -t     Don't print transport-layer headers.

       -c cnt Terminate after receiving cnt packets.

       -i if  Listen on interface if, e.g., eth0.

       expr   Berkeley	packet filter expression.  See tcpdump(8)
	      man page for details and examples.


SEE ALSO
       tcpdump(8)


NOTES
       Requires libpcap version 0.3 or greater to  be  installed.
       Protocols  completely supported include Ethernet, IP, TCP,
       UDP, DNS, (R)ARP, IPX.


AUTHOR
       Michael S. Borella 3Com Corp.  1800 W. Central Rd.   Mount
       Prospect IL 60563 mike_borella@3com.com


BUGS
       ICMP  and  DHCP/BOOTP support is not quite complete.  L2TP
       support is flaky.  RIP support is incomplete  and  SIP/SDP
       support is very rudimentary.























































			 24 February 1999			2


