Configuring Device Security
Defining Access Control
Cisco Small Business SFE/SGE Managed Switches Administration Guide 99
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are important. For example, if the source MAC address
09:00:07:A9:B2:EB and the wildcard mask is 00:ff:00:ff:00:ff, the 1st, 3rd,
and 5th octets of the MAC address are checked, while the 2nd, 4th, and
6th octets are ignored.
• Destination MAC Address:
-
MAC Address
— Matches the destination MAC address to which
packets are addressed to the ACE.
-
Wildcard Mask
— Indicates the destination MAC Address wildcard
mask. Wildcards are used to mask all or part of a destination MAC
Address. Wildcard masks specify which octets are used and which
octets are ignored. A wildcard mask of ff:ff:ff:ff:ff:ff indicates that no octet
is important. A wildcard of 00:00:00:00:00:00 indicates that all the octets
are important. For example, if the destination IP address
09:00:07:A9:B2:EB and the wildcard mask is 00:ff:00:ff:00:ff, the 1st, 3rd,
and 5th octets of the MAC address are checked, while the 2nd, 4th, and
6th octets are ignored.
• VLAN ID — Matches the packet’s VLAN ID to the ACE. The possible field values
are 1 to 4095.
• Inner VLAN — Matches the ACE to the inner VLAN ID of a double tagged
packet.
• 802.1p — Displays the packet tag value.
• 802.1p Mask — Displays the wildcard bits to be applied to the CoS.
• Ethertype — Displays the Ethernet type of the packet.
• Action — Indicates the ACL forwarding action. The possible field values are:
-
Permit —
Forwards packets which meet the ACL criteria.
-
Deny —
Drops packets which meet the ACL criteria.
-
Shutdown —
Drops packet that meet the ACL criteria, and disables the
port to which the packet was addressed.
STEP 3 Define the relevant fields.
STEP 4 Click Apply. The Rule settings are modified, and the device is updated.
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