Hi there,

I think that a Timebased ACL is the solution to your problem: http://www.cisco.com/en/US/products/sw/secursw/ps1018/products_tech_note0918 6a00800a5b9a.shtml

Time-Based ACLs Using Time Ranges Time-based ACLs were introduced in Cisco IOS Software Release 12.0.1.T. While similar to extended ACLs in function, they allow for access control based on time. To implement time-based ACLs, a time range is created that defines specific times of the day and week. The time range is identified by a name and then referenced by a function. Therefore, the time restrictions are imposed on the function itself. The time range relies on the router's system clock. The router clock can be used, but the feature works best with Network Time Protocol (NTP) synchronization.

These are time-based ACL commands. time-range time-range-name | !--- Defines a named time range.

periodic days-of-the-week hh:mm to [days-of-the-week] hh:mm | !--- Defines the periodic times or, defines the absolute times. absolute [start time date] [end time date] | !--- The time range used in the actual ACL.

ip access-list name|number <extended_definition>time-rangename_of_time-range

In this example, a Telnet connection is permitted from the inside to outside network on Monday, Wednesday, and Friday during business hours:

interface Ethernet0/0 ip address 10.1.1.1 255.255.255.0 ip access-group 101 in

access-list 101 permit tcp 10.1.1.0 0.0.0.255 172.16.1.0 0.0.0.255 eq telnet time-range EVERYOTHERDAY

time-range EVERYOTHERDAY periodic Monday Wednesday Friday 8:00 to 17:00

With kind regards,

Duncan Stork