Two subnets through one switch
Posted on 2011-09-12
OK, here it is and I need help. Right now, I have a setup where by I have an IPS with two ports.
These are setup in bridge mode and basically one port connects my LAN port on my router to
it and the second port is then connected to my LAN so that all traffic leaving or coming into my
organization is filtered. My problem is that I only have two ports and I need to filter traffic from
two separate subnets on these two IPS ports (right now I am only filtering one). I was considering putting in a managed switch
and creating VLANs so as to connect one subnet to one port and the other subnet to the other
port on the managed switch (each port configured for its VLAN) and then connect the switch to
one of the ports on the IPS. My question is how would I uplink to the IPS? I am hung up on the
connecting the switch to the IPS part. Would this port have to be setup to see both VLANs or even
as a trunk? I will have to have two unmanaged switches for both ports on the IPS with this
scenario - for inbound and outbound traffic is you will. I cannot replace or add ports to the IPS for cost
reasons. Advice is GREATLY appreciated. Thanks.
and outbound if you will. I am really hung up and the uplink to the IPS part. Thanks.