[c-nsp] ASA and directed broadcast

[Nicolas KARP]

Good Morning / Good Afternoon / Good Evening,

We are currently using an old protocol which sends Layer 3 UDP Broadcast.
There is a file on every machines which are using this protocol which
contains all the relevant broadcast networks used in our network.

In order to know where is the corresponding service, the machine sends a
RPC broadcast (RPC to : 10.0.0.255 for the network 10.0.0.0/24) and then a
machine on this network responds to the RPC request.

We have a workaround on Juniper firewall which translates the Layer 3 (*
10.0.0.255*) broadcast into a Layer 2 broadcast (*FF*:*FF*:*FF*:*FF*:*FF*:*
FF*)

I didn't find the same command on the Cisco ASA. Have someone already
looked into it ?  Basically, the question is how can we translate Layer 3
Broadcast into Layer 2 broadcaston the ASA ?

So far, we put all our network on Cisco router until we fix the issue with
the ASA. On the Cisco router we use the command  *"ip directed-broadcast"*


Best Regards,


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# - -   Nicolas KARP
# - -   Network and Security Engineer
# - -    Email : liste at karp.fr <nicolas at karp.fr>
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