extended access lists exampleDeny FTP for E0
access-list 101 deny tcp 172.16.4.0 0.0.0.255 172.16.3.0 0.0.0.255 eq 21
access-list 101 deny tcp 172.16.4.0 0.0.0.255 172.16.3.0 0.0.0.255 eq 20
access-list 101 permit ip172.16.4.0 0.0.0.255 0.0.0.0 255.255.255.255