Monitor connection Clients to network-interface 1

[coroner74]

hi folks,
having the following problem.
A server, set up with one physically NIC has several IP-Adresses configured on this device.
Now I would like to disable the older IPs from older VLANS that *might* not be longer in use.
But I can't guarantee that someone uses some of these
IPs.
How can I monitor what boxes in the net connect to those
interfaces so I would get a list of hosts that I have to reconfigure to use only the newer IP-Adress.
(I had a likely problem moving my DNS-Server and to find out what clients looking up for hostnames on the old DNS I could set the parameter logging..., something similar to that but for an IP Adress would be nice)

Thanx in advance.
Coroner74

 

[jad]

you could try snooping for the ip-address and watch over time.

if you're looking for permanent connections, or at least current connections then you could do a 'netstat -n' and check for the old ip addresses.

umm ... will think further ...

 

[joeunixadmin]

Hi,

Try snoop.

-Joe

 

[coroner74]

Yeah, snoop worked well for this. shame on me ;-)

Thanx !!
Coroner74