| 摘要 |
Embodiments of the present invention provide a method, an apparatus, and a system for network address translation, and relate to the field of communications technologies. A NAT control apparatus receives a network address migration message after a first data center migrates a NAT mapping entry corresponding to a migrated virtual machine VM to a second data center, verifies the network address migration message, and updates home information of the NAT mapping entry in a network address mapping table from the first data center to the second data center according to the network address migration message. The embodiments of the present invention are applicable to network address translation in a scenario where a virtual machine VM is migrated across data centers, a NAT control apparatus performs centralized control over each data center, and in this way, NAT address resources in each data center can be properly planned, and a release attack problem caused by a fact that applying and using of a VM are not performed in a same data center can be solved. |
