Cisco ASA 5505 - Manual (Page 679)

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Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 34 Configuring Access Rules
Configuration Examples for Permitting or Denying Network Access
Configuration Examples for Permitting or Denying Network
Access
This section includes typical configuration examples for permitting or denying network access.
The following example illustrates the commands required to enable access to an inside web server with
the IP address 209.165.201.12. (This IP address is the real address, not the visible on the outside
interface after NAT.)
hostname(config)# access-list ACL_OUT extended permit tcp any host 209.165.201.12 eq www
hostname(config)# access-group ACL_OUT in interface outside
The following example allows all hosts to communicate between the inside and hr networks but only
specific hosts to access the outside network:
hostname(config)# access-list ANY extended permit ip any any
hostname(config)# access-list OUT extended permit ip host 209.168.200.3 any
hostname(config)# access-list OUT extended permit ip host 209.168.200.4 any
hostname(config)# access-group ANY in interface inside
hostname(config)# access-group ANY in interface hr
hostname(config)# access-group OUT out interface outside
For example, the following sample access list allows common EtherTypes originating on the inside
interface:
hostname(config)# access-list ETHER ethertype permit ipx
hostname(config)# access-list ETHER ethertype permit mpls-unicast
hostname(config)# access-group ETHER in interface inside
The following example allows some EtherTypes through the ASA, but it denies all others:
hostname(config)# access-list ETHER ethertype permit 0x1234
hostname(config)# access-list ETHER ethertype permit mpls-unicast
hostname(config)# access-group ETHER in interface inside
hostname(config)# access-group ETHER in interface outside
The following example denies traffic with EtherType 0x1256 but allows all others on both interfaces:
hostname(config)# access-list nonIP ethertype deny 1256
hostname(config)# access-list nonIP ethertype permit any
hostname(config)# access-group ETHER in interface inside
hostname(config)# access-group ETHER in interface outside
The following example uses object groups to permit specific traffic on the inside interface:
!
hostname (config)# object-group service myaclog
hostname (config-service)# service-object tcp source range 2000 3000
hostname (config-service)# service-object tcp source range 3000 3010 destinatio$
hostname (config-service)# service-object ipsec
hostname (config-service)# service-object udp destination range 1002 1006
hostname (config-service)# service-object icmp echo
hostname(config)# access-list outsideacl extended permit object-group myaclog interface
inside any