ASA packet flow

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Aug 9th, 2010
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Hi everybody,

My question is: I have an ASA5505 as default gateway (, and a CME router in the same network ( which has others subnets behind, (VoIP) & (CUE). All my computers has the ASA as default gateway. My problem is, If I try to reach from any computer to the network, the ASA does not allow giving an error like this:

Example for ICMP:

"Deny inbound icmp src inside: dst inside: (type 8, code 0)"

From the firewall rules, I give access from any inbound to inbound traffic, but does not work. I know the packet flow is peculiar because it goes out from the same interface that it came (inside), but it might be possible, isn't' it?

Thanks a lot,


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August Ritchie Mon, 08/09/2010 - 11:02
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As a note you will want to change you static (inside,inside) to read something like this.

static (inside,inside) netmask

Then the rest would be the same

same-security-traffic permit intra-interface

global (inside) 1 interface
Kureli Sankar Mon, 08/09/2010 - 12:26
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Pls. let the router do the routing.

Make sure all your inside computers have the CME( as the gateway.  The CME router should have its default gateway pointing to the ASA.


sistemas.sede Tue, 08/10/2010 - 00:28
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Thank you for your quick answers, I will try the differents solutions.



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