Protection of cloud-provider system using scattered honeypots

1. An apparatus for securing a cloud-provider system, the apparatus comprising:

one or more network interfaces for connecting to a network; and

one or more processors, configured to allocate resources of the cloud-provider system for use by a plurality of tenants of the cloud-provider system, to allocate to each of the plurality of the tenants one or more Internet Protocol (IP) address ranges, to assign multiple IP addresses, scattered across the IP address ranges, for use by one or more honeypot servers, and to secure the cloud-provider system against hostile attacks, by processing network traffic associated with the assigned IP addresses using at least the one or more honeypot servers.

2. The apparatus according to claim 1 , wherein each of the IP address ranges comprises a respective IP subnet and wherein the IP addresses assigned for use by one or more honeypot servers comprise at least one IP address in the same subnet as each of the allocated IP address ranges.

3. The apparatus according to claim 1 , wherein the one or more processors are configured to secure the cloud-provider system without accessing the resources allocated to the tenants.

4. The apparatus according to claim 1 , wherein the one or more processors are configured to:

extract one or more attack parameters from the network traffic associated with the assigned IP addresses;

specify a rule based on the extracted parameters; and

apply the rule to other network traffic, which is associated with other IP addresses in the IP address ranges, different from the assigned IP addresses.

5. The apparatus according to claim 4 , wherein the rule comprises a blocking rule specifying network traffic to be blocked, or a reporting rule specifying an attack to be reported.

6. The apparatus according to claim 1 , wherein the one or more processors are configured to extract attack parameters from the network traffic associated with the assigned IP addresses, to cluster detected attacks to one or more groups, and to secure the cloud-provider system responsively to the groups.

7. The apparatus of claim 2 , wherein the subnets including the IP address ranges include subnets of a plurality of different sizes.

8. The apparatus of claim 2 , wherein the processor is configured to assign the IP addresses for use by one or more honeypot servers, at the lower edges of the IP address range in the same subnet.

9. The apparatus of claim 2 , wherein the processor is configured to assign the IP addresses for use by one or more honeypot servers, at the upper edges of the IP address range in the same subnet.

10. The apparatus of claim 2 , wherein the processor is configured to assign the IP addresses for use by one or more honeypot servers, in the middle of the IP address range in the same subnet.

11. A method for securing a cloud-provider system, the method comprising:

allocating resources of the cloud-provider system for use by a plurality of tenants of the cloud-provider system, and further allocating to each of the plurality of the tenants one or more Internet Protocol (IP) address ranges;

assigning multiple IP addresses, scattered across the IP address ranges, for use by one or more honeypot servers; and

securing the cloud-provider system against hostile attacks, by processing network traffic associated with the assigned IP addresses using at least the one or more honeypot servers.

12. The method according to claim 11 , wherein each of the IP address ranges comprises a respective IP subnet and wherein assigning the multiple IP addresses for use by the one or more honeypot servers comprises assigning at least one IP address in the same subnet as each of the allocated IP address ranges.

13. The method according to claim 11 , wherein securing the cloud-provider system is performed without accessing the resources allocated to the tenants.

14. The method according to claim 11 , wherein securing the cloud-provider system comprises:

extracting one or more attack parameters from the network traffic associated with the assigned IP addresses;

specifying a rule based on the extracted parameters; and

applying the rule to other network traffic, which is associated with other IP addresses in the IP address ranges, different from the assigned IP addresses.

15. The method according to claim 14 , wherein the rule comprises a blocking rule specifying network traffic to be blocked, or a reporting rule specifying an attack to be reported.

16. The method according to claim 11 , wherein securing the cloud-provider system comprises extracting attack parameters from the network traffic associated with the assigned IP addresses, clustering detected attacks to one or more groups, and securing the cloud-provider system responsively to the groups.