[ale] [OT] DHCPd + nmap?

[Michael D. Hirsch]

On Monday 01 December 2003 01:45 pm, Jonathan Glass wrote:
> Anyone tied nmap together with dhcpd? I'd like to nmap scan a box
> whenever they accept an address from my DHCP server.
>
> What I'm unclear about is how to monitor the dhcpd logs in real-time.  I
> can tail the file periodically, then scan, but would prefer to do the
> scan as soon as they receive an address.

I have written scripts to do this.  The quickest way I found was to run tail 
-f logfile and pipe the output to some other script.  Both perl and python 
make it really easy to run a subprocess like that and get its output.

I used to be embarrased by having done that, but I've since become convinced 
that the author of tail did all the hard work.  If I were to reimplement it, 
how would I be better for it?

Michael