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igrp - Online in the Cloud

Run igrp in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command igrp that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


igrp - igrp route injector

SYNOPSIS


igrp -i <interface> -v -f <routes file> -a <as number> -S <spoofed source ip addrs> -D
<destination router ip addrs>

DESCRIPTION


This manual page documents briefly the igrp command. This manual page was written for the
Debian distribution because the original program does not have a manual page.

IGRP is a tool for route injection. The routing protocol IGRP is no longer really widely
used in the outside world, but for the first steps, we decided to use this one as a
starting point.

The whole purpose is to define a routing table with all possible parameters by hand
without having your system actually running any kind of dynamic routing and sending this
information out to the routers. Since IGRP is a broadcast based protocol, the default
behavior is to send these messages to the ip broadcast address (255.255.255.255). If you
want to inject a route to a system remote from you, you have to address the 'update'
accordingly and make sure that you send the packet(s) with the right source address, so
the router accepts the update.

Before using the tool, you have to design your routing table you want to inject in the
target router. It should contain data which makes your route the prefered one for the
victim. The format is:

destination:delay:bandwith:mtu:reliability:load:hopcount

where destination is the network (192.168.1.0), delay is in ms/10, bandwith in MBit per
second, MTU is the maximum transfer unit (1500 for ethernet), reliability and load are in
percent (255=100%, 1=0%) and hopcount just in hops.

Empty lines and lines beginning with # are ignored.

-i <interface> interface

-v verbose

-f <routes file> file, which contains the routes (as much as you like)

-a <autonomous system> autonomous system the IGRP process is running on, use ASS to find
it out or specify a range to use with -a START -b STOP to send updates to all AS from
START to STOP (I highly recommend using ASS for this!!)

-S <spoofed source IP> maybe you need this

-D <destination IP> If you don't specify this, the broadcast address is used

If you want the routes to be persistent (after some testing around), make up a shell loop
and run the program within this loop every 25-30 seconds, to keep the router beliving your
routes.

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