Patent ID: 11909738
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC G  H

Claim 12:
13. A first device comprising:
a memory, configured to store a program code, wherein
the memory is connected to at least one processor, and when the program code is executed by the at least one processor, the first device is caused to:
receive a first domain name request packet sent by a second device in an internal network, wherein the first domain name request packet carries a source internet protocol (IP) address and a first local domain name, and the first local domain name indicates a device other than the second device in the internal network, the first device being a forwarding device in the internal network;
determine whether the first local domain name is authenticated;
when the first local domain name is authenticated, generate a first entry in forwarding information, wherein the first entry comprises a first address pair comprising the source IP address and a first IP address corresponding to the first local domain name, and the forwarding information comprises one or more entries each of which includes a corresponding address pair;
receive a data request packet sent by the second device, wherein the data request packet carries the source IP address and a destination IP address; and
determine, based on the source IP address, the destination IP address, and the forwarding information, whether to forward the data request packet, wherein the data request packet requests to access the internal network.