Security Basics: Re: Query: NMAP and Multiple Tier Network Discovery

[Adriel Desautels <adriel () netragard com>]

Will,
	Yes, nmap can do that assuming that traffic can be sent from nmap to 
the target. Read the man pages. :)
Regards,
        Adriel T. Desautels
        Chief Technology Officer
        Netragard, LLC.
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william fitzgerald wrote:
> Dear Experts,
>
> Can NMAP map and traverse multiple networks with a single enterprise.
>
> I am looking for a nice open source network discovery tool that can 
> discover hosts and their services within a enterprise/corporate 
> environment.
> Example enterprise network topology:
> GatewayFirewall --> DMZ Servers
>                 --> Tier2-Firewall --> Application Servers
>                                    --> Tier3-Firewall --> Databases
>                                                       --> Corp-LAN
>
> It would be handy to use a tool to traverse the network (including 
> firewalls and routers) to map out the entire network for host types and 
> service they run. Presumably all firewalls in the enterprise network 
> would have rules to permit the dedicated host running nmap.
> Is NMAP capable of this if its only hosted/running in a single tier or 
> should I be looking at: multiple instances of nmap or another tool 
> (www.netdisco.org/ ) or a combination of tools.
>
> regards,
> Will.