I have a question about present scenario in a network where the wan connectivity is 4 GB and Lan network is 10 GB. The firewall for the WAN is cisco 5580-20 with 10 GB ethernet interface and on the LAN 6500 series switch with 10 GB ethernet module. The issue about how to implement IPS in this network. Because cisco 5580 series firewall doesn't support any IPS module even 6500 series switch support IDSM-2 module. But only for 2 GB ethernet module. So what can be the solution for such a network?