Tacack,

 

I don't have an answer to your question but another question. Why would
"router-traffic" (Inbound) allow the packets?

 

Johan

 

From: [email protected]
[mailto:[email protected]] On Behalf Of Vybhav
Ramachandran
Sent: 25 November 2010 12:56 PM
To: OSL Security
Subject: [OSL | CCIE_Security] Doubt in Lab 15

 

Hello All,

 

Here's the scenario

 

 

<---------------->(s0/1/0) R5 (fa 0/1) <------------------> 

 

There's an ACL inbound on the s0/1/0 interface blocking everything but icmp
packets

 

Also, there is CBAC applied "outbound" on the s0/1/0 which looks at TCP ,
UDP and ICMP ( as per the question ).

 

Now, in a future task, R5 is to sync with an NTP master, through the s0/1/0
network. For this, there are 2 solutions

 

1) Open up a hole in the inbound ACL on the s0/1/0 , to permit NTP packets

2) Modify the CBAC session configured on s0/1/0 , to inspect
"router-traffic" 

 

Now, what i was wondering was, if i used the second solution method, would i
be losing points for the first cbac task? I know configuring extra doesn't
affect the grading, but i was a little concerned . 

 

Cheers,
TacACK

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