I did a quick investigation.

Please correct me, if I am missing something.


With transparent firewall:


   - All IP traffic is allowed from higher security level interface to the
   lower level and the response is allowed back.
   - To allow any traffic from lower level to higher level, ACL should be
   configured to allow the traffic.
   - If nat-control is enabled, then NAT or static is mandatory else traffic
   is not allowed to cross the ASA.
   - For non-IP traffic. ethertype ACL is mandatory for both higher and
   lower security interfaces.

With regards
Kings



On Mon, Oct 5, 2009 at 3:18 PM, Kingsley Charles <[email protected]
> wrote:

> Hi all
>
> If I have the ASA configured as transparent firewall, the arp traffic is
> allowed across the firewall without the need of ACLs to be configured.
> But for any other layer 3 traffic, do we need to allow them using ACLs.
>
>
> For IP to cross the ASA, do we need to confgure IP ACLs. Do I need the
> following?
>
>
> access-list mine permit ip any any
>
> access-group mine in interface inside
> access-group mine in interface outside
>
>
> I am seeing an inconsistency in my ASA. Initially I was able to telnet
> across the ASA only with the above configured later it worked without the
> ACLs.
>
>
>
> With regards
> Kings
>
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