DROP before PREROUTING

["Bruno Nunes" <nunesb@xxxxxxxxx>]

Hi folks,
  i have this rule which forwards all incoming requests for ipA to a
local machine as you can see.
   iptables -t nat -A PREROUTING -d <ipA> -i eth0 -p tcp --dport 80
-j DNAT --to 192.168.1.4

 is there any way to allow only a range of machines to use this
specific rule (not interfering with the other rules)? dropping all
requests that are not welcome.

thanks