I'm a newbie to CISCO PIX firewalls. My problems is to allow ICMP packages of type 3 code 4 (defragmentation needed) from a specific DSL router to the internal network interface. The following line should allow ICMP type 3 packages - does this allow all subtypes or maybe just code 0 or 1?
PIX1#icmp permit host 192.168.1.3 unreachable outside
How can I specify the type a little bit more specific? Thanks for any help.