Detect Gateway IP address in windows

MisterX b.xavier at internet.lu
Mon Oct 11 14:55:23 EDT 2004


Did Bush outlaw gateway info gathering lately? ;)) 

Cisco routers? GW for VLANs?

I might have some interested colleagues....

send me more info...

Xavier

> -----Original Message-----
> From: use-revolution-bounces at lists.runrev.com 
> [mailto:use-revolution-bounces at lists.runrev.com] On Behalf Of 
> RGould8 at aol.com
> Sent: Monday, October 11, 2004 7:40 PM
> To: use-revolution at lists.runrev.com
> Subject: Re: Detect Gateway IP address in windows
> 
> why do you need to know the gateway address ?
> or, if you prefer, what do you want to use it for ?
> 
> I need to know the gateway address because I'm writing 
> software to configure 
> routers for use over fiber-optic systems for an ISP.   In 
> order to do the 
> configuration, I take the gateway address and add some info 
> to the end of it and 
> perform GETS and POSTS to that particular URL.    For Mac, I use:
> 
>    put shell("/usr/sbin/netstat -r -n | grep default | awk 
> '{print $2}'") into GatewayIP
>      
> 
> 
> 
> 
> In a message dated 10/8/04 8:53:54 PM, alex at tweedly.net writes:
> 
> 
> > I tried not to ask - but I can't help myself .....
> > 
> > why do you need to know the gateway address ?
> > or, if you prefer, what do you want to use it for ?
> > 
> > There have been a few suggested ways to find i tout (and 
> there are a couple
> > of others, probably even less "perfect"); knowing what you 
> want to use it
> > for would help to give you the best answer (or at least to 
> point out the
> > constraints and difficulties with each particular way).
> > 
> > Note that in the right circumstances, it's possible to have 
> a machine
> > connected to, and able to talk to, the Internet with :
> >   - no gateway address
> >   - a gateway address which is not used to reach the internet
> >   - a gateway address which is not reachable from the 
> Internet, even though
> > the machine itself is able to talk to the 'net
> >   - a gateway address which does not represent a host (i.e. 
> you can't
> > communicate with it)
> >   - multiple gateways, each used for different parts of the net
> > 
> > On principle, I'd say you should try not to need to know 
> this info :-)
> > 
> > -- Alex.
> > 
> 
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