someone attack my server with DOS attack what the sloution?? firewall ?? and if firewall the server provider provide Cisco ASA - 10Mbps Hardware Firewall Cisco ASA - 100Mbps Hardware Firewall Cisco ASA - 1000Mbps Hardware Firewall also my server on 1000MBps connection is there any good sloution?
Is the server on your own network is it provided by a host? The firewall isnt going to simply stop a DOS attack, you need to look at router configuration as well.
Then it is down to Softlayer to protect your server from DoS attacks as it is their network but more importantly their routers.