Secure Ports

(:NRD) Shields Up Port Scan failed in both 135 and 139
Could someone please direct me on how to CLOSE Net Bios Port 139.
Apparently it is easy to do but it just isn’t coming to me.

Secondly> Could someone please direct me on how to SET CPF v. 2.64 to “drop”, “block” of “ignore” all ping requests (ICMP Echo)
Thx. lot
(:KWL)