Currently have a client with a Cisco U560 acting as FW, DHCP, and UC. The WAN interface is a bottleneck since it can only provide 20-35Mbps even through there is a Comcast ISP with 100Mpbs(download) and 20Mbps(upload). We're planning on putting a Cisco ASA 5505 and take all of the ACLs, DHCP, etc. from the UC560. I know the UC560 needs an external IP and so does the Cisco ASA. I'm thinking the following:
----------------UC560(leave this configuration as is)
Comcast ISP ------Cisco SG300
----------------Cisco ASA 5505
Has anyone done this? Any input would be greatly appreciated!
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