Linksys SGE2000 Cisco Small Business SFE/SGE2xxx Series Managed Switches Admin - Page 112
Permit, Shutdown, Port Management, Match IP Precedence, Add IP Based ACL IP Address
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Configuring Device Security Defining Access Control 4 - IP Address - Displays the source port IP address to which packets are addressed to the ACE. - Wildcard Mask - Displays the source IP address wildcard mask. Wildcard masks specify which bits are used and which bits are ignored. A wildcard 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 149.36.184.198 and the wildcard mask is 255.36.184.00, the first eight bits of the IP address are ignored, while the last eight bits are used. • Destination - IP Address - Displays the destination port IP address to which packets are addressed to the ACE. - Wildcard Mask - Displays the destination IP address wildcard mask. • DCSP - Matches the packets DSCP value. • IP Prec - 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. • 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 page. - 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. • Delete ACL button - To remove an ACL, click the Delete ACL button. • Delete Rule button - To remove an ACE rule, click the rule's checkbox and click the Delete Rule button. STEP 2 Click the Add ACL button. The Add IP Based ACL Page opens: Cisco Small Business SFE/SGE Managed Switches Administration Guide 103