# phpman > man > iptraf-ng(8)

[IPTRAF-NG(8)](https://www.chedong.com/phpMan.php/man/IPTRAF-NG/8/markdown)                           System Manager's Manual                          [IPTRAF-NG(8)](https://www.chedong.com/phpMan.php/man/IPTRAF-NG/8/markdown)



## NAME
       iptraf - Interactive Colorful IP LAN Monitor

## SYNOPSIS
       **iptraf-ng** { [ **-f** ] [ { **-i** _iface_ | **-g** | **-d** _iface_ | **-s** _iface_ | **-z** _iface_ | **-l** _iface_ } [ **-t** _time__‐
       _out_ ] [ **-B** [ **-L** _logfile_ ] ] ] | [ **-h** ] }

## DESCRIPTION
       **iptraf-ng** is an ncurses-based IP LAN monitor that generates various  network  statistics  in‐
       cluding  TCP  info, UDP counts, ICMP and OSPF information, Ethernet load info, node stats, IP
       checksum errors, and others.

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


## OPTIONS
       These options can also be supplied to the command:

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

### -g

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

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

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

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

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

### -B
              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  sta‐
              tistics,  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-ng**

### -f
              first one running.  This should only be used to recover from an  abnormal  termination
              or system crash.

### -h

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


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


## SEE ALSO
        Documentation/* - complete documentation written by the author


## AUTHOR
       Gerard Paul Java (<riker@mozcom.com>)


## MANUAL AUTHOR
       Frederic Peters (<fpeters@debian.org>), using iptraf-ng -h General manual page modifications by
       Gerard Paul Java (<riker@mozcom.com>), Phil Cameron (<pcameron@redhat.com>)




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