[nycbug-talk] Finding a device's IP address
spork at bway.net
Thu Mar 19 19:41:26 EDT 2009
On Thu, 19 Mar 2009, Pete Wright wrote:
> On 19-Mar-09, at 3:52 PM, Charles Sprickman wrote:
>> Perhaps a bit OT, but a general question...
>> You have a device on a network that you do not have physical access to.
>> It has an IP address which may or may not be on the subnet it's actually
>> attached to.
>> How do you find what IP is configured? What magic ARP stuff can you spew
>> in it's direction that would perhaps make it respond with something that
>> would give away it's IP?
> in the past when i've been in this pickle i logged into a switch i suspected
> was close to the host in question. found its entry in the arp cache (which
> was associated w/another switch). connected to that switch, washed hands
> repeated until i found the subnet that the box was on (in this case our IBM
> nodes all had a similar range of mac addy's which was sufficiently different
> than our foundry switches which made things easier).
That's near where I started. I'm thinking that perhaps the switch is a
bit wonky, because I've looked at the "port address table" on this HP
switch and it just comes up empty, which is annoying:
===========================- TELNET - MANAGER MODE
Status and Counters - Port Address Table - Port 11
> there's even a fun diagram i found online:
Thanks for the pointers...
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