Data Sheet
© 2008-2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 11 of 21
Network Security
Comprehensive security
solutions
Subscriber security
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IEEE 802.1x allows dynamic, port-based security by providing user authentication.
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IEEE 802.1x with VLAN assignment allows a dynamic VLAN assignment for a specific user
regardless of where the user is connected.
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IEEE 802.1x and port security are provided to authenticate the port and manage network
access for all MAC addresses.
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IEEE 802.1x readiness check simplifies deployment by generating a report for end hosts
capable of 802.1x.
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802.1x supplicant helps mitigate security threats in the Carrier Ethernet access network by
having the switch (with a supplicant) securely authenticate itself with an upstream switch.
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An absence of local switching behavior provides security and isolation between UNIs, helping
ensure that users cannot monitor or access other users’ traffic on the same switch.
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DHCP Snooping prevents malicious users from spoofing a DHCP server and sending out
bogus addresses. This feature also prevents numerous other attacks such as Address
Resolution Protocol (ARP) poisoning.
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Dynamic ARP Inspection helps ensure user integrity by preventing malicious users from
exploiting the insecure nature of the ARP protocol.
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IP Source Guard prevents a malicious user from spoofing or taking over another user’s IP
address by creating a binding table between client’s IP and MAC address, port, and VLAN.
Switch security
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Control Plane Security prevents DoS attacks on the CPU.
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Configurable control plane security on ENI provides service providers the flexibility to
selectively discard or peer with customer’s control plane traffic on a per-port, per-protocol
basis.
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Secure Shell (SSH) Protocol, Kerberos, and SNMPv3 provide network security by encrypting
administrator traffic during Telnet and SNMP sessions. SSH, Kerberos, and the cryptographic
version of SNMPv3 require a special cryptographic software image because of U.S. export
restrictions.
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Port security secures the access to an access or trunk port based on MAC address. After a
specific timeframe, the aging feature removes the MAC address from the switch to allow
another device to connect to the same port.
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Multilevel security on the console access prevents unauthorized users from altering the switch
configuration.
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TACACS+ and RADIUS authentication facilitate centralized control of the switch and restrict
unauthorized users from altering the configuration.
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Configuration File Security helps ensure that only authenticated users have access to the
configuration file.
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MAC address learning and aging notifications allow administrators to keep track of subscriber
activities.
Network security
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Cisco security VLAN ACLs on all VLANs prevent unauthorized data flows from being bridged
within VLANs.
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Cisco standard and extended IP security router ACLs define security policies on routed
interfaces for control-plane and data-plane traffic.
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Port-based ACLs for Layer 2 interfaces allow for application of security policies on individual
switch ports.
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MAC address notification allows administrators to be notified of users added to or removed
from the network.
Network monitoring
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Remote Switched Port Analyzer (RSPAN) allows for remote monitoring of the user interface.
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Bidirectional data support on the Switched Port Analyzer (SPAN) port allows the Cisco
intrusion detection system to take action when an intruder is detected.
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