On Tue, 16 Sep 2008 05:43:56 -0400, in comp.os.linux.networking Neil Jones wrote:
> I am being tasked to map a network. In the past I have used nmap to
> find the systems on the local LAN and remote LANs (same enterprise).

> This time I want to create a visual map of the LAN. With cheops, I
> reasonably good results but cannot be documented for managers with
> certainty. What are some good tools now that will create visual maps of
> the networks?

> What is the best way to map a network when ICMP echo has been turned off?

> Thank you in advance for any help.

Do you have login access to each of the switches and routers
in the network? If so, you may be able to use the various
switches reporting abilities to find all connected devices
by switch/router port. Then you'd have to assemble the
info yourself.

But this method won't tell you the OS type of each machine,
and it has nothing to do with Linux.

--
Dale Dellutri (lose the Q's)

Neil Jones wrote:
> I am being tasked to map a network. In the past I have used nmap to
> find the systems on the local LAN and remote LANs (same enterprise).
>
> This time I want to create a visual map of the LAN. With cheops, I
> reasonably good results but cannot be documented for managers with
> certainty. What are some good tools now that will create visual maps of
> the networks?

Is this what you are looking for?
http://www.parseerror.com/lanmap/

It passively scans all traffic that comes by your network card.

Best regards,
--
Willem Bogaerts

Application smith
Kratz B.V.
http://www.kratz.nl/

Dale Dellutri wrote:
> On Tue, 16 Sep 2008 05:43:56 -0400, in comp.os.linux.networking Neil Jones wrote:
>> I am being tasked to map a network. In the past I have used nmap to
>> find the systems on the local LAN and remote LANs (same enterprise).
>
>> This time I want to create a visual map of the LAN. With cheops, I
>> reasonably good results but cannot be documented for managers with
>> certainty. What are some good tools now that will create visual maps of
>> the networks?
>
>> What is the best way to map a network when ICMP echo has been turned off?
>
>> Thank you in advance for any help.
>
> Do you have login access to each of the switches and routers
> in the network? If so, you may be able to use the various
> switches reporting abilities to find all connected devices
> by switch/router port. Then you'd have to assemble the
> info yourself.
>
> But this method won't tell you the OS type of each machine,
> and it has nothing to do with Linux.
>

There are some tools like 3Com's nework scanners that will scan the switches
and try to assemble a map. They're limited, and their update utilities are not
very good, but for a fast map and rough layout, they're quite good.

In comp.os.linux.networking Neil Jones wrote:
> This time I want to create a visual map of the LAN. With cheops, I
> reasonably good results but cannot be documented for managers with
> certainty. What are some good tools now that will create visual maps
> of the networks?

Long long ago, when high powered workstations used 68K chips, I used
to play with early versions of some OpenView stuff which did that. It
used SNMP to retrieve information from devices - hosts, switches,
routers, whatnot, and built-up a logical map of the entire network
showing what was on which side of what. I suspect that is still part
of OpenView Network Node Manager:

https://h10078.www1.hp.com/cda/hpms/display/main/hpms_content.jsp?zn=bto&cp=1-11-15-119^9684_4000_100__

is a link one can find via:

http://www.hp.com/go/openview

> What is the best way to map a network when ICMP echo has been turned
> off?

Turn it back on?-)

rick jones
never have liked security through obscurity
--
oxymoron n, Hummer H2 with California Save Our Coasts and Oceans plates
these opinions are mine, all mine; HP might not want them anyway...
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...

Neil Jones wrote:
> I am being tasked to map a network. In the past I have used nmap to
> find the systems on the local LAN and remote LANs (same enterprise).
>
> This time I want to create a visual map of the LAN. With cheops, I
> reasonably good results but cannot be documented for managers with
> certainty. What are some good tools now that will create visual maps of
> the networks?
>
> What is the best way to map a network when ICMP echo has been turned off?
>
> Thank you in advance for any help.
>
> NJ

Use 'cdp neighbors' if you are using all Cisco devices. Then compile the
data yourself by manually looking at the configs for all devices and
putting the data into a map using Visio or something similar. Or you can
purchase an expensive application to do the mapping for you. Search
Google. It will tell you.

Brandon McCombs wrote:

> Use 'cdp neighbors' if you are using all Cisco devices. Then compile the
> data yourself by manually looking at the configs for all devices and
> putting the data into a map using Visio or something similar. Or you can
> purchase an expensive application to do the mapping for you. ...

see http://netdisco.org/ for an example of such an application, minus
the "expensive", that is. ;-)

--
----------------------------------------------------------------------
Sylvain Robitaille syl@alcor.concordia.ca

Network and Systems analyst Concordia University
Instructional & Information Technology Montreal, Quebec, Canada
----------------------------------------------------------------------