Remote factory reset of an electronic device
During operation, an electronic device receives a packet or a frame associated with a second electronic device, where the packet or the frame includes information specifying a factory reset command. For example, the second electronic device may be a dynamic host configuration protocol (DHCP) server or may perform functions of a DHCP server. Moreover, the packet or the frame may include an acknowledgment (ACK) in a discover, offer, request and acknowledgment (DORA) procedure, and the information may be included in an option 43 subfield or an option 52 subfield in the packet or the frame. In response to receiving the factory reset command, the electronic device performs a factory reset. Note that the factory reset may restore firmware in the electronic device to a factory-fresh version and a configuration of the electronic device to a factory-fresh state, may erase memory in the electronic device.
1. An electronic device, comprising:
an interface circuit configured to communicate with a second electronic device, and wherein the electronic device is configured to:
receive using wired or wireless communication, a packet or a frame associated with the second electronic device, wherein the packet or the frame comprises information specifying a factory reset command, wherein the packet or the frame comprises an acknowledgment (ACK) in a discover, offer, request and acknowledgment (DORA) procedure, and wherein the information is included in an option 43 subfield or an option 52 subfield in the packet or the frame, and the packet or the frame comprises a dynamic host configuration protocol (DHCP) ACK; and
perform the factory reset in response to receiving the factory reset command, wherein the factory reset restores firmware in the electronic device to a factory-fresh version and a configuration of the electronic device to a factory-fresh state; and
wherein the factory reset erases memory in the electronic device.
2. The electronic device of claim 1 , wherein the second electronic device comprises a DHCP server or performs functions of a DHCP server.
3. The electronic device of claim 1 , wherein the second electronic device comprises an access point or a controller of the electronic device.
4. The electronic device of claim 1 , wherein the electronic device is configured to:
determine whether a predefined time interval has elapsed; and
when the predefined time interval has elapsed, provide a discover message addressed to the second electronic device, wherein the discover message initiates the DORA procedure.
5. The electronic device of claim 1 , wherein the electronic device is configured to:
receive a negative acknowledgment (NACK) associated with the second electronic device; and
in response to receiving the NACK, provide a discover message addressed to the second electronic device, wherein the discover message initiates the DORA procedure.
6. The electronic device of claim 1 , wherein the electronic device is configured to ignore the packet or the frame when received outside of a predefined time interval or when a number of received instances of the packet or the frame exceeds a predefined value.
7. The electronic device of claim 1 , wherein the electronic device comprises:
memory configured to store program instructions; and
a processor, coupled to the memory, configured to execute the program instructions, wherein, when executed by the processor, the program instructions cause the electronic device to perform the factory reset.
8. The electronic device of claim 1 , wherein the information is instead of or in addition to an Internet Protocol (IP) address.
9. A non-transitory computer-readable storage medium for use in conjunction with an electronic device, the computer-readable storage medium storing program instructions that, when executed by the electronic device, causes the electronic device to perform operations comprising:
receiving, using wired or wireless communication, a packet or a frame associated with a second electronic device, wherein the packet or the frame comprises information specifying a factory reset command, wherein the packet or the frame comprises an acknowledgment (ACK) in a discover, offer, request and acknowledgment (DORA) procedure, and wherein the information is included in an option 43 subfield or an option 52 subfield in the packet or the frame, and the packet or the frame comprises a dynamic host configuration protocol (DHCP) ACK; and
performing the factory reset in response to receiving the factory reset command, wherein the factory reset restores firmware in the electronic device to a factory-fresh version and a configuration of the electronic device to a factory-fresh state; and
wherein the factory reset erases memory in the electronic device.
10. The non-transitory computer-readable storage medium of claim 9 , wherein the second electronic device comprises a DHCP server or performs functions of a DHCP server.
11. The non-transitory computer-readable storage medium of claim 9 , wherein the operations comprise:
determining whether a predefined time interval has elapsed; and
when the predefined time interval has elapsed, providing a discover message addressed to the second electronic device, wherein the discover message initiates the DORA procedure.
12. The non-transitory computer-readable storage medium of claim 9 , wherein the operations comprise:
receiving a negative acknowledgment (NACK) associated with the second electronic device; and
in response to receiving the NACK, providing a discover message addressed to the second electronic device, wherein the discover message initiates the DORA procedure.
13. The non-transitory computer-readable storage medium of claim 9 , wherein the operations comprise ignoring the packet or the frame when received outside of a predefined time interval or when a number of received instances of the packet or the frame exceeds a predefined value.
14. The non-transitory computer-readable storage medium of claim 9 , wherein the second electronic device comprises an access point or a controller of the electronic device.
15. A method for performing a factory reset, comprising:
by an electronic device:
receiving, using wired or wireless communication, a packet or a frame associated with a second electronic device, wherein the packet or the frame comprises information specifying a factory reset command, wherein the packet or the frame comprises an acknowledgment (ACK) in a discover, offer, request and acknowledgment (DORA) procedure, and wherein the information is included in an option 43 subfield or an option 52 subfield in the packet or the frame, and the packet or the frame comprises a dynamic host configuration protocol (DHCP) ACK; and
performing the factory reset in response to receiving the factory reset command, wherein the factory reset restores firmware in the electronic device to a factory-fresh version and a configuration of the electronic device to a factory-fresh state; and
wherein the factory reset erases memory in the electronic device.
16. The method of claim 15 , wherein the second electronic device comprises an access point or a controller of the electronic device.
17. The method of claim 15 , wherein the second electronic device comprises a DHCP server or performs functions of a DHCP server.
18. The method of claim 15 , wherein the method comprises:
determining whether a predefined time interval has elapsed; and
when the predefined time interval has elapsed, providing a discover message addressed to the second electronic device, wherein the discover message initiates the DORA procedure.
19. The method of claim 15 , wherein the method comprises:
receiving a negative acknowledgment (NACK) associated with the second electronic device; and
in response to receiving the NACK, providing a discover message addressed to the second electronic device, wherein the discover message initiates the DORA procedure.
20. The method of claim 15 , wherein the method comprises ignoring the packet or the frame when received outside of a predefined time interval or when a number of received instances of the packet or the frame exceeds a predefined value.