[Discuss] selecting a subnet

[jay at lentecs.com (Jason Normand)]

If you are running your own firewall you could also NAT to the corporate
network if you can not get a specific subnet.
On Sep 10, 2014 4:28 PM, "Chuck Anderson" <cra at wpi.edu> wrote:

> On Wed, Sep 10, 2014 at 04:04:12PM -0400, Stephen Adler wrote:
> > Guys,
> >
> > I'm setting up a small network at work behind my own firewall. Typically
> > I would use a 192.168.1.0/24 network but I'm afraid the IT people at
> > work have used that for something in my work LAN environment. Is there a
> > way of probing the work LAN network to ensure that what ever IP address
> > I select for my network doesn't get tangled up with one on the corporate
> > LAN? Or is it best to just choose one and hope for the best?
>
> From the main corporate network not behind your own firewall,
> traceroute to something in 192.168.1.x and see if it routes
> anywhere....  If it looks like it just goes out to the internet and
> then stops, then they are probably not using it for anything you care
> about.  If the traceroute completes, then there is a valid destination
> on the network using it.
>
> But you should really check with corporate IT to see if what you
> propose is allowed...
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