ACL

 

Server-PT = 1
ip dhcp

Router 43331 = 3
Router 1
en
conf t
access-list 10 deny host 192.168.20.2
access-list 10 deny host 192.168.20.0 0.0.0.255
access-list 10 permit any
int g0/0/0
ip access-group 10 out
do wr

//clear
no ip access-group 10 out
ex
no access-list 10

EXTENDED ACL
en
conf t
access-list 110 deny icmp host 192.168.20.2 host 192.168.10.3
access-list 110 permit ip any any
int g0/0/0
ip access-group 110 out