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Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
OL-12247-04
Chapter 34 Configuring Network Security with ACLs
Configuring IPv4 ACLs
Beginning in privileged EXEC mode, follow these steps to configure a time-range parameter for an
ACL:
Repeat the steps if you have multiple items that you want in effect at different times.
To remove a configured time-range limitation, use the
no
time-range
time-range-name
global
configuration command.
This example shows how to configure time ranges for
workhours
and to configure January 1, 2006, as a
company holiday and to verify your configuration.
Switch(config)#
time-range workhours
Switch(config-time-range)#
periodic weekdays 8:00 to 12:00
Switch(config-time-range)#
periodic weekdays 13:00 to 17:00
Switch(config-time-range)#
exit
Switch(config)#
time-range new_year_day_2006
Switch(config-time-range)#
absolute start 00:00 1 Jan 2006 end 23:59 1 Jan 2006
Switch(config-time-range)#
end
Switch#
show time-range
time-range entry: new_year_day_2003 (inactive)
absolute start 00:00 01 January 2006 end 23:59 01 January 2006
time-range entry: workhours (inactive)
periodic weekdays 8:00 to 12:00
periodic weekdays 13:00 to 17:00
To apply a time range, enter the time-range name in an extended ACL that can implement time ranges.
This example shows how to create and verify extended access list 188 that denies TCP traffic from any
source to any destination during the defined holiday times and permits all TCP traffic during work hours.
Switch(config)#
access-list 188 deny tcp any any time-range new_year_day_2006
Switch(config)#
access-list 188 permit tcp any any time-range workhours
Switch(config)#
end
Switch#
show access-lists
Extended IP access list 188
10 deny tcp any any time-range new_year_day_2006 (inactive)
20 permit tcp any any time-range workhours (inactive)
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
time-range
time-range-name
Assign a meaningful name (for example,
workhours
) to the time range to
be created, and enter time-range configuration mode. The name cannot
contain a space or quotation mark and must begin with a letter.
Step 3
absolute
[
start
time date
]
[
end
time date
]
or
periodic
day-of-the-week hh:mm to
[
day-of-the-week
]
hh:mm
or
periodic
{
weekdays
|
weekend
|
daily
}
hh:mm to hh:mm
Specify when the function it will be applied to is operational.
•
You can use only one
absolute
statement in the time range. If you
configure more than one absolute statement, only the one configured
last is executed.
•
You can enter multiple
periodic
statements. For example, you could
configure different hours for weekdays and weekends.
See the example configurations.
Step 4
end
Return to privileged EXEC mode.
Step 5
show time-range
Verify the time-range configuration.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.
