We got one colocation and use one 2960 for all servers with an ip block /26. Now there's a server been attacked by DDOS which cause whole network slow down. We plan to buy one cisco asa 5512x in the front to prevent this kind of attack. The provider says we have to get another /29 config in asa, then connect /26 on 2960. Because all servers are all the same, open to public, no internal ip, no vlan, no nat, can we just use one /26 on both asa and 2960 and setup some rules on asa to prevent attack. we are new to asa series. please kindly advise. thanks.