Re: Time Range ACL question

From: Luan Nguyen (luan.m.nguyen@gmail.com)
Date: Tue Aug 12 2008 - 23:08:28 ART


That belongs in the NON_WORK_HOURS. Too many Fosters? How can you doubt a
5 CCIE? :)
Basically, what they said is if the time-range match then allow everything,
else just allow the web-server which is during working hours.
Since the question didn't ask to block web-server access during non work
hours...then it permits access all the time.
A very smart approach. Should pay attention to the concept they use and not
just the technical stuffs.

-Luan

On Tue, Aug 12, 2008 at 8:55 PM, Huan Pham
<Huan.Pham@peopletelecom.com.au>wrote:

> Hi Marc,
>
> Your answer did not meet one of the requirements, which is:
> - Use the minimum amount of access-list entries to accomplish this
>
> Their solution uses 2 entries which is the minimum. Yours uses 3
> entries. Note that the question is to use the minimum number of ACL
> entries, and not minimum number of commands!
>
> However, their solution is not all correct either! I would give both
> Brian's 0 points for this task. The task states
>
> "Work hours are from 9 AM to 5 PM Monday through Friday"
>
> Why they use this statement???????
>
> periodic weekdays 17:01 to 23:59
>
> Do they mean that everyone should work extra minute from 17:00:00 -
> 17:00:59 . Who will pay for the OT? Is Internetwork Experts willing to
> take the bills?
>
> Heheh.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Marc La Porte
> Sent: Wednesday, 13 August 2008 6:46 AM
> To: Cisco certification
> Subject: Time Range ACL question
>
> Hi guys,
>
> Question (IE lab 9, 8.2 for those interesed):
> - Configure R5 to block excessive surfing the internet traffic during
> working hours so that they can only go to your internal web server at
> 148.26.3.100.
> - After hours these users should be allowed full access
> - Work hours are from 9 AM to 5 PM Monday through Friday
> - Use the minimum amount of access-list entries to accomplish this
>
> Their answer:
> ip access-list extended DENY_INTERNET_SURFING
> permit ip any any time-range NON_WORK_HOURS
> permit tcp any host 148.26.3.100 eq www !
>
> time-range NON_WORK_HOURS
> periodic weekends 0:00 to 23:59
> periodic weekdays 0:00 to 8:59
> periodic weekdays 17:01 to 23:59
> !
> interface fa0/1
> ip access-group DENY_INTERNET_SURFING in
>
>
> My answer:
> time-range WWW
> periodic weekdays 09:00 to 16:59
> !
> access-list 182 permit tcp any host 148.26.3.100 eq www time-range WWW
> access-list 182 deny tcp any any eq www time-range WWW
> access-list 182 permit ip any any time-range WWW !
>
> int f0/1
> ip access-group 182 in
>
>
> Is my answer ok as well?
> Which answer is better?
>
> Thanks
> Marc
>
>
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