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MAGNUM 6K SWITCHES, MNS-6K USER GUIDE
Port Security
The port security feature can be used to block computers from accessing the network by
requiring the port to validate the MAC address against a known list of MAC addresses.
This port security feature is provided on an Ethernet, Fast Ethernet, or Gigabit Ethernet
port. In case of a security violation, the port can be configured to go into the disable
mode or drop mode. The disable mode disables the port, not allowing any traffic to pass
through. The drop mode allows the port to remain enabled during a security violation and
drop only packets that are coming in from insecure hosts. This is useful when there are
other network devices connected to the Magnum 6K family of switches. If there is an
insecure access on the secondary device, the Magnum 6K family of switches allows the
authorized users to continue to access the network; the unauthorized packets are dropped
preventing access to the network.
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etwork security
etwork security hinges on the ability to allow or deny access to network
sources. The access control aspect of secure network services involves
allowing or disallowing traffic based on information contained in packets,
such as the IP address, MAC address, or other content. Planning for access is a key
architecture and design consideration. For example, which ports are configured for port
security? Normally rooms with public access e.g. lobby, conference rooms etc. should be
configured with port security. Once that is decided, the next few decisions are – who are
the authorized and unauthorized users? What action should be taken against authorized as
well as unauthorized users? How are the users identified as authorized or unauthorized?
Configuring Port Security
Login as a level 2 user or as a manager to configure port security. Once logged in, get to
the port-security configuration level to setup and configure port security.
Syntax port-security
For example
Magnum6K25# configure port-security
Magnum6K25(port-security)##
FIGURE 55 – Port security configuration mode
Alternately, the following commands can also be used to enter the port-security
configuration mode:
Magnum6K25# port-security
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