Protecting server and network method
A server and analysis server technology, applied in the field of computer network security, to achieve the effect of reducing costs, reducing customer costs, and improving utilization
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[0034] The present invention can achieve unity in many aspects such as safety, cost and effective utilization.
[0035] Traditional firewall protection system, see attached figure 1 , is to use a firewall to block between the protected server or the protected network and the Internet, generally between the router connected to the Internet and the protected server / network.
[0036] When a client on the Internet, such as C1~C4, wants to access the server S1 in Net1, it first requests the DNS server DNS1 serving the domain of S1 to obtain the IP address of S1, and then the request packet will pass through the Internet, router 1, and firewall FW1 reaches S1, and S1 reversely returns the response packet to C1.
[0037] If the firewall protects a subnet, for example, the subnet composed of S2~S4 and PC1 / PC2 is protected by FW2, and the situation is similar.
[0038] The firewall can prohibit the client access of the specified IP and block certain types of attacks such as SynFlood ...
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