[ILUG] [OT] Cisco router ip question

[Roy White]

Hey Folks,

	Sorry for the OT question, but I was wondering how to specify a CIDR
network of 16 address in an access-list

i.e.	> access-list 111 permit ip aaa.bbb.ccc.80 (now i want the equiv of
255.255.255.240 here) any
			
			I've tried the following	    0.0.0.240	
			(with no success)	    255.255.255.240

Anyone out there know how to do this? or even if its possible, I want to do
this to stop spoofed ip packets from leaving my router destined for the
net...

Regards

	Royster

p.s. I know I've left something out so shout if what I've said makes no
sense :-)