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Configuring Device Security
Defining Access Control
ESW 500 Series Switches Administration Guide
•
ICMP Code — Indicates and ICMP message code for filtering ICMP packets.
ICMP packets that are filtered by ICMP message type can also be filtered by
the ICMP message code.
•
IGMP — Filters packets by IGMP message or message types.
•
Source
-
IP Address
are addressed to the ACE.
-
Wildcard Mask
Wildcard masks specify which bits are used and which bits are ignored.
A wild card mask of 255.255.255.255 indicates that no bit is important. A
wildcard of 0.0.0.0 indicates that all the bits are important. For example, if
the source IP address 149.36. 1 84. 1 98 and the wildcard mask is
255.36. 1 84.00, the first eight bits of the IP address are ignored, while the
last eight bits are used.
•
Destination
-
IP Address
are addressed to the ACE.
-
Wildcard Mask
mask.
•
Select either Match DSCP or Match IP Precedence.
•
Match DSCP — Matches the packet to the DSCP tag value.
•
Match IP Precedence — Matches the packet IP Precedence value to the
ACE. Either the DSCP value or the IP Precedence value is used to match
packets to ACLs. The possible field range is 0-7.
•
Traffic Class — Indicates the traffic class to which the packet is matched.
•
Action — Indicates the action assigned to the packet matching the ACL.
Packets are forwarded or dropped. In addition, the port can be shut down, a
trap can be sent to the network administrator, or packet is assigned rate
limiting restrictions for forwarding. The options are as follows:
-
Permit
— Forwards packets which meet the ACL criteria.
-
Deny
— Drops packets which meet the ACL criteria.
-
Shutdown
— Drops packet that meets the ACL criteria, and disables the
port to which the packet was addressed. Ports are reactivated from the
Port Management
— Matches the source port IP address from which packets
— Defines the source IP address wildcard mask.
— Matches the destination port IP address to which packets
— Defines the destination IP address of the wildcard
page.
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