RE: Discovering network topology

["Ramki B" <bramkie () gmail com>]

I think HP Openview Network Node Manager is the answer, it even has
Layer 2 level mapping..

http://openview.hp.com/products/nnm/index.html

...Ramki 

> -----Original Message-----
> From: listbounce () securityfocus com 
> [mailto:listbounce () securityfocus com] On Behalf Of David Gillett
> Sent: Friday, February 16, 2007 6:42 AM
> To: 'David Rosenhan'; 'Jeremy'; security-basics () securityfocus com
> Subject: RE: Discovering network topology
>
>   When I tried a number of tools on our network a few years 
> back, all of them ran into difficulties with unnumbered 
> links, trunks, secondary addresses, and redundant routing.  
> And that was just layer 3 -- none of them came close on the 
> layer 2 map....
>
> David Gillett
>
>
> > -----Original Message-----
> > From: listbounce () securityfocus com
> > [mailto:listbounce () securityfocus com] On Behalf Of David Rosenhan
> > Sent: Thursday, February 15, 2007 8:07 AM
> > To: Jeremy; security-basics () securityfocus com
> > Subject: RE: Discovering network topology
> >
> > Solar Winds has some nice tools for this when it comes to 
> discovery...
> > however I have found that just about any of the tools out 
> there that 
> > do this have one flaw or another.  You just need to try a 
> few out that 
> > people mention here and see which one you like best.
> >
> > Most of them have evaluation options.
> >
> > David R
> >
> > -----Original Message-----
> > From: listbounce () securityfocus com
> > [mailto:listbounce () securityfocus com]
> > On Behalf Of Jeremy
> > Sent: Thursday, February 15, 2007 1:33 AM
> > To: security-basics () securityfocus com
> > Subject: Discovering network topology
> >
> > Hi list,
> >
> >    I was wondering if there were special ways to discover networks

> > topologies / mapping networks.  Are there particular tools 
> or methods 
> > I should be aware of ?  The few tools I tried only gave me 
> > approximative results.  However I think nmap + the standard 
> unix tools 
> > can do a good part of the job.
> >
> >    Moreover, what are the differences between discovering an 
> > organisation's network from the inside, and from the outside ?
> > I mean, what are the best practices to discover network
equipments, 
> > subnets, VPNs, etc?  I know that traceroute can be a good starting

> > point, but are
> >
> > there some other tools and techniques I should know ?
> >
> > Regards,
> >
> > --
> > Jeremy


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