Time based access lists any advice???? 2

[maxcolmer25]

Hi
Could anyone shed some light on time based access lists as i need to stop router traffic after 7pm every day as ISDN line is being brought up after hours and weekends when nobody is in office. We suspect that DNS is trying to get updates thus bringing up connection.
If i use time access list will i need to put on NTP server on router or how does it know time?(Router does not let me enter # ntp peer {ip address}
or # ntp server {ip address}
Although i can use the # clock set hh:mm:ss ect. command. will this be enough???
I am using a Cisco 1721 with Bri interface and IOS v12.2

Any advice is greately appreciated
Max

 

[nohair]

Hi,
No need to use an NTP server, configuring the clock locally will do the job.
Here is a sample config for time-range if you need to know how to use it:

!
time-range <name>
periodic weekdays 7:00 to 19:00
periodic Sunday 18:00 to 20:00
access-list 110 permit ip any any time-range <name>
!
interface Dialer1
ip access-group 110 in
!

The time range stuff is quite flexible.

BR,
-Stephen

 

[maxcolmer25]

Thanks alot Stephen for that advice.