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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 1 Overview
Features
Password-protected access (read-only and read-write access) to management interfaces (device
manager, Network Assistant, and the CLI) for protection against unauthorized configuration
changes
Multilevel security for a choice of security level, notification, and resulting actions
Static MAC addressing for ensuring security
Protected port option for restricting the forwarding of traffic to designated ports on the same switch
Port security option for limiting and identifying MAC addresses of the stations allowed to access
the port
VLAN aware port security option to shut down the VLAN on the port when a violation occurs,
instead of shutting down the entire port
Port security aging to set the aging time for secure addresses on a port
BPDU guard for shutting down a Port Fast-configured port when an invalid configuration occurs
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 with open access to allow a host to access the network before being authenticated.
Flexible-authentication sequencing to configure the order of the authentication methods that a port
tries when authenticating a new host.
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
VLAN assignment for restricting IEEE 802.1x-authenticated users to a specified VLAN
Port security for controlling access to IEEE 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