Abstract: Examples of renewal of security certificates of supplicant devices are described. In an example, a request to authenticate a supplicant device based on a security certificate is received by an authenticator device and from a supplicant device. The request comprises information relating to the security certificate which is expired. A login history of the supplicant device and presence of a valid account associated with the supplicant device in a directory database is determined. An authentication successful message is sent to the supplicant device based on the login history and presence of the valid account in the directory database. The supplicant device is redirected to a captive web portal for authentication of the supplicant device based on the login credential. In response to a successful authentication of the supplicant device in the captive web portal, a renewed security certificate for the supplicant device is provided.

Abstract: Examples of renewal of security certificates of supplicant devices are described. In an example, a request to authenticate a supplicant device based on a security certificate is received by an authenticator device and from a supplicant device. The request comprises information relating to the security certificate which is expired. A login history of the supplicant device and presence of a valid account associated with the supplicant device in a directory database is determined. An authentication successful message is sent to the supplicant device based on the login history and presence of the valid account in the directory database. The supplicant device is redirected to a captive web portal for authentication of the supplicant device based on the login credential. In response to a successful authentication of the supplicant device in the captive web portal, a renewed security certificate for the supplicant device is provided.

Abstract: Examples of upgrading a plurality of access points (APs) are described. In an example, responsive to a firmware upgrade being initiated, the plurality of APs having an identical AP type are grouped into a plurality of subsets. A primary seed AP is identified corresponding to each of the plurality of subsets, based on a resource availability of each of the plurality of APs. The primary seed AP is to download a firmware upgrade image from a remote server. Each of the plurality of APs except the primary seed AP is categorized as a non-seed AP. The non-seed AP is to download the firmware upgrade image from the primary seed AP. A network address of the remote server is sent to the primary seed AP for downloading the firmware upgrade image.