Script `broadcast-eigrp-discovery`

Script types: prerule
Categories: discovery, broadcast, safe
Download: https://svn.nmap.org/nmap/scripts/broadcast-eigrp-discovery.nse

Script Summary

Performs network discovery and routing information gathering through Cisco's Enhanced Interior Gateway Routing Protocol (EIGRP).

The script works by sending an EIGRP Hello packet with the specified Autonomous System value to the 224.0.0.10 multicast address and listening for EIGRP Update packets. The script then parses the update responses for routing information.

If no A.S value was provided by the user, the script will listen for multicast Hello packets to grab an A.S value. If no interface was provided as a script argument or through the -e option, the script will send packets and listen through all valid ethernet interfaces simultaneously.

Script Arguments

broadcast-eigrp-discovery.kparams: the K metrics. Defaults to 101000.
broadcast-eigrp-discovery.as: Autonomous System value to announce on. If not set, the script will listen for announcements on 224.0.0.10 to grab an A.S value.
broadcast-eigrp-discovery.interface: Interface to send on (overrides -e)
broadcast-eigrp-discovery.timeout: Max amount of time to listen for A.S announcements and updates. Defaults to 10 seconds.
max-newtargets, newtargets: See the documentation for the target library.

Example Usage

nmap --script=broadcast-eigrp-discovery <targets>
nmap --script=broadcast-eigrp-discovery <targets> -e wlan0

Script Output

Pre-scan script results:
| broadcast-eigrp-discovery:
| 192.168.2.2
|   Interface: eth0
|   A.S: 1
|   Virtual Router ID: 0
|   Internal Route
|     Destination: 192.168.21.0/24
|     Next hop: 0.0.0.0
|   Internal Route
|     Destination: 192.168.31.0/24
|     Next hop: 0.0.0.0
|   External Route
|     Protocol: Static
|     Originating A.S: 0
|     Originating Router ID: 192.168.31.1
|     Destination: 192.168.60.0/24
|     Next hop: 0.0.0.0
|   External Route
|     Protocol: OSPF
|     Originating A.S: 1
|     Originating Router ID: 192.168.31.1
|     Destination: 192.168.24.0/24
|     Next hop: 0.0.0.0
|_  Use the newtargets script-arg to add the results as targets

Requires

Author:

Hani Benhabiles