IPWATCHD

Section: Maintenance Commands (8)

NAME

IPwatchD - IP conflict detection tool for Linux

SYNOPSIS

ipwatchd --config config_file [--debug]
ipwatchd --version
ipwatchd --help

DESCRIPTION

IPwatchD is simple daemon that uses libpcap to detect IP conflict on Linux. It can be configured to listen on one or more interfaces (alias interfaces are also supported) in active or passive mode. In active mode IPwatchD protects your host before IP takeover by answering Gratuitous ARP requests received from conflicting system. In passive mode it just records information about conflict through standard syslog interface.

OPTIONS

The following options are supported:

-c --config: Specifies path to configuration file.
-d --debug: Enables debug mode. Debug information are recorded through syslog with facility set to "daemon" and priority set to "debug".
-v --version: Prints program version to standard output.
-h --help: Prints short help information to standard output.

EXAMPLE

Every line starting with a hash mark ('#') in IPwatchD configuration file is considered to be a comment. Every uncommented line must start with a name of the network interface followed by at least one space or tab and requested mode for interface.

IPwatchD can operate on each network interface in one of two modes. In passive mode it just generates syslog events. In active mode it also answers Gratuitous ARP request and sends following Gratuitous ARP requests to update ARP cache of neighboring hosts with correct data.

# Example configuration file
eth0 active
eth0:0 passive

AUTHOR

This manual page was written by Jaroslav Imrich jariq(at)jariq(dot)sk