|
An understanding of the following key
points should have been achieved:
- ACLs perform several functions
within a router, including implementing security/access procedures.
- ACLs are used to control and manage
traffic.
- For some protocols, two ACLs can be
applied to an interface: one inbound ACL and one outbound ACL.
- With ACLs, after a packet is matched
to an ACL statement, it can be denied or permitted access to the
router.
- Wildcard mask bits use the number
one (1) and the number zero (0) to identify how to treat the
corresponding IP address bits.
- Access list creation and application
is verified through the use of various IOS show commands.
- The two main types of ACLs are
standard and extended.
- Named ACLs allow for the use of a
name to identify the access list instead of a number.
- ACLs can be configured for all
routed network protocols.
- ACLs are placed where they allow the
most efficient control.
- ACLs are typically used in firewall
routers.
- Access lists can also restrict
virtual terminal access to the router.
|
