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Access Control List Commands
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Example
Access Control List Commands
Access Control Lists (ACL) provide packet filtering for IP frames (based on address,
protocol, Layer 4 protocol port number or TCP control code) or any frames (based
on MAC address or Ethernet type). To filter packets, first create an access list, add
the required rules, specify a mask to modify the precedence in which the rules are
checked, and then bind the list to a specific port.
Access Control Lists
An ACL is a sequential list of permit or deny conditions that apply to IP addresses,
MAC addresses, or other more specific criteria. This switch tests ingress or egress
packets against the conditions in an ACL one by one. A packet will be accepted as
soon as it matches a permit rule, or dropped as soon as it matches a deny rule. If no
rules match for a list of all permit rules, the packet is dropped; and if no rules match
for a list of all deny rules, the packet is accepted.
There are three filtering modes:
• Standard IP ACL mode (STD-ACL) filters packets based on the source IP address.
• Extended IP ACL mode (EXT-ACL) filters packets based on source or destination
IP address, as well as protocol type and protocol port number. If the TCP protocol
is specified, then you can also filter packets based on the TCP control code.
Console#show dot1x
Global 802.1X Parameters
reauth-enabled: yes
reauth-period: 300
quiet-period: 350
tx-period: 300
supp-timeout: 30
server-timeout: 30
reauth-max: 2
max-req: 2
802.1X Port Summary
Port Name Status Operation Mode Mode Authorized
1/1 disabled Single-Host ForceAuthorized n/a
1/2 disabled Single-Host ForceAuthorized n/a
.
.
1/23 disabled Single-Host ForceAuthorized yes
1/24 disabled Single-Host ForceAuthorized n/a
802.1X Port Details
802.1X is disabled on port 1
.
.
.
802.1X is enabled on port 24
Console#