Container Isolation via IP Octet Tenant Identification
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Solution Overview
Problem
Existing container isolation techniques in multi-tenant environments, such as network overlays and packet encapsulation, result in significant resource overhead and complexity, making it difficult to securely isolate containers on the same host without dedicated hosts for each layer 2 domain.
Innovation Solution
Implementing an IP addressing scheme that identifies tenants through specific IP address octets, configuring MACVLAN interfaces, and setting firewall rules to prevent communication between containers associated with different tenants, allowing containers to share the same layer 2 domain and reducing resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network overlays or packet encapsulation are used to isolate containers, then container isolation security is improved, but resource overhead and system complexity increase significantly
Solution Approach 1:
The patent extracts the tenant identification function from complex network overlay protocols and encapsulation mechanisms, implementing it directly through IP address assignment. Each container is assigned an IP address where specific octets encode tenant identifiers, allowing isolation to be achieved through standard networking infrastructure without requiring additional overlay networks or encapsulation protocols.
Solution Approach 2:
The patent changes the parameter representation from complex protocol headers and encapsulation layers to simple IP address octets. By encoding tenant identifiers directly in the IP address structure (using specific octets for tenant ID), the system achieves the same isolation function with a fundamentally different parameter representation that eliminates the need for overlay networks.
2Reliability
If dedicated hosts are assigned for each layer 2 domain to isolate containers, then container isolation security is improved, but resource consumption increases
Solution Approach 1:
The patent merges multiple layer 2 domains into a single shared layer 2 network by using IP address-based tenant identification. Instead of requiring separate physical or virtualized hosts for each layer 2 domain, containers from different tenants share the same host and layer 2 network, with isolation enforced through IP address filtering and firewall rules rather than physical separation.
Solution Approach 2:
The patent makes the host and layer 2 network universal by allowing them to serve multiple tenants simultaneously. A single host can host containers from multiple tenants, and a single layer 2 network can carry traffic for multiple tenants, with differentiation achieved through IP address encoding and filtering rather than dedicated infrastructure.
3Productivity
If IP addressing scheme with tenant identification is implemented, then resource efficiency is improved by sharing layer 2 domain, but container isolation from different tenants must be maintained
Solution Approach 1:
The patent introduces IP address filtering and firewall rules as intermediary mechanisms that operate at the network layer. These intermediaries inspect packet headers, extract tenant identifiers from IP addresses, and enforce isolation policies by permitting or blocking traffic based on tenant identity, thereby maintaining security while enabling resource sharing.
Solution Approach 2:
The patent segments the network identification space by using specific octets of IP addresses to encode tenant identifiers. This segmentation allows the system to distinguish between different tenants' traffic flows within a shared network infrastructure, enabling logical isolation without physical separation by dividing the address space into tenant-specific segments.
Data Source
AI summary
A device can receive a request to deploy, on the device, a container associated with a tenant. The request can include information identifying one or more parameters related to the container. The device can configure, for the container, an Internet protocol (IP) address that includes information identifying the tenant with which the container is associated. The IP address can permit the container to be reachable from outside of the device. The device can configure an interface for the container to isolate the container from another container deployed on the device. The other container can be associated with another tenant. The tenant and the other tenant can be different. The device can configure a set of rules related to traffic associated with the container. The device can perform an action related to the container after deploying the container with the IP address, the interface, and the set of rules.