Allow only one way communication between two VLAN's
but can you explain me how this is not possible..
for my understanding
IP communication is bidirectional
we have a firewall (asa 5510) how can this accomplished.
an ASA will make this possible by permitting only traffic from a high security level interface to a low security level interface but will block traffic from a low security level going to a high security level unless you apply an ACL to permit such traffic.
As it is stateful it will let replies to traffic coming from high to low pass through the low security level interface.
you will have to inspect ICMP in global policy to achieve this or configure an ACL for letting ICMP replies go from low to high.
So in your case you could put VLAN 99 in a high security level interface and VLAN 50 on a lower security level interface.
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