example we will create an extended ACL that will deny FTP traffic
topologi iha leten ne ita sei deny ka block tiha network 10.0.0/8 atu labele access ba FTP Server ka ip 187.100.16.2, Konfigurasaun neébe ita sei halo mak hanesan tuir mai ne;e:
# Konfigurasaun iha Router
hostname RTR001
!
!
ip dhcp excluded-address 10.0.0.1
!
ip dhcp pool client
network 10.0.0.0 255.0.0.0
default-router 10.0.0.1
dns-server 187.100.16.2
!
!
!
no ip cef
no ipv6 cef
!
!
interface FastEthernet0/0
ip address 10.0.0.1 255.0.0.0
duplex auto
speed auto
!
interface FastEthernet1/0
ip address 187.100.16.1 255.255.255.248
ip access-group 101 out
duplex auto
speed auto
!
interface Serial2/0
no ip address
shutdown
!
interface Serial3/0
no ip address
shutdown
!
interface FastEthernet4/0
no ip address
shutdown
!
interface FastEthernet5/0
no ip address
shutdown
!
interface GigabitEthernet6/0
no ip address
duplex auto
speed auto
!
ip classless
!
ip flow-export version 9
!
!
access-list 101 deny tcp 10.0.0.0 0.255.255.255 187.100.16.0 0.0.0.7 eq 20
access-list 101 deny tcp 10.0.0.0 0.255.255.255 187.100.16.0 0.0.0.7 eq ftp
access-list 101 permit ip any any
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
end
====================================
topologi iha leten ne ita sei deny ka block tiha network 10.0.0/8 atu labele access ba FTP Server ka ip 187.100.16.2, Konfigurasaun neébe ita sei halo mak hanesan tuir mai ne;e:
# Konfigurasaun iha Router
hostname RTR001
!
!
ip dhcp excluded-address 10.0.0.1
!
ip dhcp pool client
network 10.0.0.0 255.0.0.0
default-router 10.0.0.1
dns-server 187.100.16.2
!
!
!
no ip cef
no ipv6 cef
!
!
interface FastEthernet0/0
ip address 10.0.0.1 255.0.0.0
duplex auto
speed auto
!
interface FastEthernet1/0
ip address 187.100.16.1 255.255.255.248
ip access-group 101 out
duplex auto
speed auto
!
interface Serial2/0
no ip address
shutdown
!
interface Serial3/0
no ip address
shutdown
!
interface FastEthernet4/0
no ip address
shutdown
!
interface FastEthernet5/0
no ip address
shutdown
!
interface GigabitEthernet6/0
no ip address
duplex auto
speed auto
!
ip classless
!
ip flow-export version 9
!
!
access-list 101 deny tcp 10.0.0.0 0.255.255.255 187.100.16.0 0.0.0.7 eq 20
access-list 101 deny tcp 10.0.0.0 0.255.255.255 187.100.16.0 0.0.0.7 eq ftp
access-list 101 permit ip any any
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
end
====================================