Home » Cisco » 300-206 » Which statement about this access list is true?
Refer to the exhibit. Which statement about this access list is true?
A. This access list does not work without 6to4 NAT
B. IPv6 to IPv4 traffic permitted on the Cisco ASA by default
C. This access list is valid and works without additional configuration
D. This access list is not valid and does not work at all
E. We can pass only IPv6 to IPv6 and IPv4 to IPv4 traffic
Correct Answer: A
Explanation/Reference:
Explanation:
ASA 9.0(1) code introduced the Unified ACL for IPv4 and IPv6. ACLs now support IPv4 and IPv6 addresses. You can even specify a mix of IPv4 and IPv6 addresses for the source and destination. The any keyword was changed to represent IPv4 and IPv6 traffic. The any4 and any6 keywords were added to represent IPv4-only and IPv6-only traffic, respectively. The IPv6-specific ACLs are deprecated. Existing IPv6 ACLs are migrated to extended ACLs.
Answer should be C,
The following example shows a mixed IPv4/IPv6 ACL:
hostname(config)# access-list demoacl extended permit ip 2001:DB8:1::/64 10.2.2.0 255.255.255.0
hostname(config)# access-list demoacl extended permit ip 2001:DB8:1::/64 2001:DB8:2::/64
hostname(config)# access-list demoacl extended permit ip host 10.3.3.3 host 10.4.4.4
It should work without a problem.