Provided by: iptraf_3.0.0-8.1_amd64 bug


       iptraf - Interactive Colorful IP LAN Monitor


       iptraf  {  [  -f  ]  [ -q ] [ -u ] [ { -i iface | -g | -d iface | -s iface | -z iface | -l
       iface } [ -t timeout ] [ -B [ -L logfile ] ] ] | [ -h ] }


       iptraf is an ncurses-based IP  LAN  monitor  that  generates  various  network  statistics
       including TCP info, UDP counts, ICMP and OSPF information, Ethernet load info, node stats,
       IP checksum errors, and others.

       If the iptraf command is issued without any command-line options, the program comes up  in
       interactive mode, with the various facilities accessed through the main menu.


       These options can also be supplied to the command:

       -i iface
              immediately  start  the  IP  traffic  monitor  on  the  specified interface, or all
              interfaces if "-i all" is specified

       -g     immediately start the general interface statistics

       -d iface
              allows you to immediately start the detailed on the indicated interface (iface)

       -s iface
              allows you to immediately monitor TCP and UDP traffic on  the  specified  interface

       -z iface
              shows packet counts by size on the specified interface

       -l iface
              start  the LAN station monitor on the specified interface, or all LAN interfaces if
              "-l all" is specified

       -t timeout
              tells IPTraf to run the specified facility for only timeout minutes.   This  option
              is used only with one of the above parameters.

       -B     redirect standard output to /dev/null, closes standard input, and forks the program
              into the background.  Can  be  used  only  with  one  of  the  facility  invocation
              parameters above.  Send the backgrounded process a USR2 signal to terminate.

       -L logfile
              allows  you  to  specify  an alternate log file name.  The default log file name is
              based on either the interface  selected  (detailed  interface  statistics,  TCP/UDP
              service  statistics,  packet  size  breakdown), or the instance of the facility (IP
              traffic monitor, LAN station monitor).  If a path is not specified, the log file is
              placed in /var/log/iptraf

       -f     clears  all  locks  and counters, causing this instance of IPTraf to think it's the
              first one  running.   This  should  only  be  used  to  recover  from  an  abnormal
              termination or system crash.

       -u     allow  use  of  unsupported  interfaces as ethernet devices.  This is needed if you
              changed the name of an interface (ex: ip link set eth0 name foo0)

       -q     no longer needed, maintained only for compatibility.

       -h     shows a command summary


        SIGUSR1 - rotates log files while program is running
        SIGUSR2 - terminates an IPTraf process running in the background.


        /var/log/iptraf/*.log - log file
        /var/lib/iptraf/* - important IPTraf data files


        Documentation/* - complete documentation written by the author


       Gerard Paul Java (


       Frederic Peters (, using iptraf -h General manual page modifications by
       Gerard Paul Java (

                                         IPTraf Help Page                               IPTRAF(8)