IPGRAB(8)

NAME
ipgrab - A Verbose Packet Sniffer

SYNOPSIS
ipgrab [ -lnpt ] [ -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

-l  Don't print link-layer headers.

-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.