Acl > Mac Based Acl - Cisco SRW208 User Manual

Chapter 5
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 screen.
Protocol
Creates an ACE (Access Control Event) based on
a specific protocol.
Select from List
Selects from a protocols list on which
ACE can be based. The possible field values are:
Any Matches the protocol to any protocol.
•
EIGRP Indicates that the Enhanced Interior Gateway
•
Routing Protocol (EIGRP) is used to classify network
flows.
ICMP
Indicates that the Internet Control Message
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Protocol (ICMP) is used to classify network flows.
IGMP Indicates that the Internet Group Management
•
Protocol (IGMP) is used to classify network flows.
TCP
Indicates that the Transmission Control Protocol
•
is used to classify network flows.
OSPF Matches the packet to the Open Shortest Path
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First (OSPF) protocol.
UDP
Indicates that the User Datagram Protocol is
•
used to classify network flows.
Protocol ID To Match
Adds user-defined protocols to
which packets are matched to the ACE. Each protocol has
a specific protocol number which is unique. The possible
field range is 0-255.
TCP Flags
Filters packets by TCP flag. Filtered packets
are either forwarded or dropped. Filtering packets by TCP
flags increases packet control, which increases network
security. The values that can be assigned are:
Set Enables filtering packets by selected flags.
•
Unset
Disables filtering packets by selected flags.
•
Don't care
Indicates that selected packets do not
•
influence the packet filtering process.
The TCP Flags that can be selected are:
Urg Indicates the packet is urgent.
Ack Indicates the packet is acknowledged.
Psh Indicates the packet is pushed.
Rst Indicates the connection is dropped.
Syn Indicates request to start a session.
Fin Indicates request to close a session.
8-Port 10/100 Ethernet Switch with Webview
Advanced Configuration
Source Port
Defines the TCP/UDP source port to which
the ACE is matched. This field is active only if 800/6-TCP or
800/17-UDP are selected in the Select from List drop-down
menu. The possible field range is 0 - 65535.
Destination Port
Defines the TCP/UDP destination
port. This field is active only if 800/6-TCP or 800/17-UDP
are selected in the Select from List drop-down menu. The
possible field range is 0 - 65535.
Source IP Address
Matches the source port IP address to
which packets are addressed to the ACE.
Wildcard Mask Defines the source IP address 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 149.36.184.198 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.
Dest. IP Address
Matches the destination port IP address
to which packets are addressed to the ACE.
Wildcard Mask
Defines the destination IP address
wildcard mask.
Match DSCP Matches the packet DSCP 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 0-63.
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.
The Add to List button adds the configured IP Based ACLs
to the IP Based ACL Table at the bottom of the screen.
ACL > MAC based ACL
ACL > MAC based ACL
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