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Catalyst 3560 Switch Software Configuration Guide
OL-8553-06
Chapter 1 Overview
Features
• Standard and extended IP access control lists (ACLs) for defining security policies in both
directions on routed interfaces (router ACLs) and VLANs and inbound on Layer 2 interfaces (port
ACLs)
• Extended MAC access control lists for defining security policies in the inbound direction on Layer 2
interfaces
• VLAN ACLs (VLAN maps) for providing intra-VLAN security by filtering traffic based on
information in the MAC, IP, and TCP/UDP headers
• Source and destination MAC-based ACLs for filtering non-IP traffic
• IPv6 ACLs to be applied to interfaces to filter IPv6 traffic:
• DHCP snooping to filter untrusted DHCP messages between untrusted hosts and DHCP servers
• IP source guard to restrict traffic on nonrouted interfaces by filtering traffic based on the DHCP
snooping database and IP source bindings
• Dynamic ARP inspection to prevent malicious attacks on the switch by not relaying invalid ARP
requests and responses to other ports in the same VLAN
• IEEE 802.1Q tunneling so that customers with users at remote sites across a service-provider
network can keep VLANs segregated from other customers and Layer 2 protocol tunneling to ensure
that the customer’s network has complete STP, CDP, and VTP information about all users
• Layer 2 point-to-point tunneling to facilitate the automatic creation of EtherChannels
• Layer 2 protocol tunneling bypass feature to provide interoperability with third-party vendors
• IEEE 802.1x port-based authentication to prevent unauthorized devices (clients) from gaining
access to the network. These features are supported:
–
Multidomain authentication (MDA) to allow both a data device and a voice device, such as an
IP phone (Cisco or non-Cisco), to independently authenticate on the same IEEE 802.1x-enabled
switch port
–
Dynamic voice virtual LAN (VLAN) for MDA to allow a dynamic voice VLAN on an
MDA-enabled port
–
VLAN assignment for restricting 802.1x-authenticated users to a specified VLAN
–
Port security for controlling access to 802.1x ports
–
Voice VLAN to permit a Cisco IP Phone to access the voice VLAN regardless of the authorized
or unauthorized state of the port
–
IP phone detection enhancement to detect and recognize a Cisco IP phone.
–
Guest VLAN to provide limited services to non-802.1x-compliant users
–
Restricted VLAN to provide limited services to users who are 802.1x compliant, but do not have
the credentials to authenticate via the standard 802.1x processes
–
802.1x accounting to track network usage
–
802.1x with wake-on-LAN to allow dormant PCs to be powered on based on the receipt of a
specific Ethernet frame
–
802.1x readiness check to determine the readiness of connected end hosts before configuring
IEEE 802.1x on the switch
–
Voice aware 802.1x security to apply traffic violation actions only on the VLAN on which a
security violation occurs.
–
MAC authentication bypass to authorize clients based on the client MAC address.