Provided by: icmpinfo_1.11-5_i386 bug

NAME

       icmpinfo - interpret ICMP messages

SYNOPSIS

       icmpinfo [-v[v[v]]] [-n] [-p] [-s] [-l] [-k]

DESCRIPTION

       Icmpinfo  is  a  tool  for looking at the ICMP messages received on the
       running host.  It can be used to detect and record ’bombs’ as  well  as
       various network problems.

       The output format is as follows (all on one line):

         MMM DD HH:MM:SS ICMP_type[sub-type]
            < sender_ip [sender_name] > unreach_ip [unreach_name]
            sp=source_port dp=dest_port seq=sequence sz=packet_size

       In  normal  operation,  icmpinfo  will  only report on "weird" packets,
       mainly icmp_unreachable.

OPTIONS

       -v     Give information about all icmp packets, excepts pings.

       -vv    Give about pings too (i.e. icmp_echo_reply).

       -vvv   Include an ascii/hex dump of each packet

       -n     Avoid name queries - just give IP addresses.  (use  this  option
              when  running unattended on name server hosts (to avoid possible
              looping))

       -p     Avoid port number to service name decoding.

       -s     Show the interface ip that received the packet. Usefull only  if
              your  host  has  several  network interfaces. In this case an ’-
              my_ip [my_name]’ is added between the sender and unreach ip  and
              name fields.

       -l     Forks   and   use   the  syslog(3)  facility  to  record  events
              (recomended use).  (root only option).

       -k     Kills the background process started with the -l option.

WARNINGS

       The packet decoding is planned for ICMP Unreachable outputs  and  might
       not be significant for all other Icmp types. Output can be shorter when
       implied by the packet size or the icmp type.

AUTHOR

       Laurent Demailly <dl@hplyot.obspm.fr>. Free software.