US 12,223,054 B2
Denial of dynamic host configuration protocol internet protocol address allocation to an unauthorized node via cross secure boot verification
Ankit Singh, Bangalore (IN); and Deepaganesh Paulraj, Bangalore (IN)
Assigned to DELL PRODUCTS L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Jan. 20, 2023, as Appl. No. 18/157,701.
Prior Publication US 2024/0248994 A1, Jul. 25, 2024
Int. Cl. G06F 21/57 (2013.01); G06F 21/33 (2013.01); H04L 9/40 (2022.01)
CPC G06F 21/575 (2013.01) [G06F 21/33 (2013.01); H04L 63/061 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a processor; and
a memory that stores executable components that, when executed by the processor, facilitate performance of operations by the system, the operations comprising:
in response to a client device being determined to have been authorized to access a network,
generating a secure boot storage certificate, and
sending the secure boot storage certificate to the client device to facilitate storage of the secure boot storage certificate in a secure boot data store of the client device, wherein the secure boot storage certificate has been signed by a key exchange key that has been stored in a network boot data store of a network switch device of the network;
intercepting a dynamic host configuration protocol discover packet that has been sent from the client device and that has been directed to a dynamic host configuration protocol device of the system, wherein the dynamic host configuration protocol device assigns respective internet protocol addresses to client devices to facilitate respective accesses, via the client devices using the respective internet protocol addresses, of the network; and
in response to determining that the secure boot storage certificate, which has been stored in the secure boot data store of the client device, has been signed by the key exchange key that has been stored in the network boot data store, assigning an internet protocol address of the respective internet protocol addresses to the client device.