A method for verifying a channel for managing an IPv4 terminal, the method comprising: receiving (403, S506) by a management device a first mapping relationship sent by an IPv4 terminal through a channel established by a network gateway for managing the IPv4 terminal, wherein establishing the channel comprises: the network gateway receiving an identifier of a network port of the IPv4 terminal sent by a home gateway; the network gateway allocating a listening port to the IPv4 terminal and establishing a mapping relationship between the listening port and the network port of the IPv4 terminal; the network gateway returning the mapping relationship between the listening port and the network port of the IPv4 terminal to the home gateway; the home gateway forwarding according to the mapping relationship, to the network port of the IPv4 terminal, a management message sent by the management device and received by the listening port so that the channel for managing the IPv4 terminal between the network port of the IPv4 terminal and the listening port is established, and wherein the first mapping relationship is a binding relationship between an identifier of the IPv4 terminal and an identifier that is received by the IPv4 terminal and sent from the home gateway; obtaining (404, S509) by the management device a second mapping relationship sent by the home gateway, wherein the second mapping relationship is a binding relationship between an identifier, which is received by the home gateway and sent from the IPv4 terminal, and an identifier of the home gateway; and when determining (405, S510) by the management device that the second mapping relationship is the same as the first mapping relationship, determining that the channel for managing the IPv4 terminal is established correctly. receiving (403, S506) by a management device a first mapping relationship sent by an IPv4 terminal through a channel established by a network gateway for managing the IPv4 terminal, wherein establishing the channel comprises: the network gateway receiving an identifier of a network port of the IPv4 terminal sent by a home gateway; the network gateway allocating a listening port to the IPv4 terminal and establishing a mapping relationship between the listening port and the network port of the IPv4 terminal; the network gateway returning the mapping relationship between the listening port and the network port of the IPv4 terminal to the home gateway; the home gateway forwarding according to the mapping relationship, to the network port of the IPv4 terminal, a management message sent by the management device and received by the listening port so that the channel for managing the IPv4 terminal between the network port of the IPv4 terminal and the listening port is established, and wherein the first mapping relationship is a binding relationship between an identifier of the IPv4 terminal and an identifier that is received by the IPv4 terminal and sent from the home gateway; obtaining (404, S509) by the management device a second mapping relationship sent by the home gateway, wherein the second mapping relationship is a binding relationship between an identifier, which is received by the home gateway and sent from the IPv4 terminal, and an identifier of the home gateway; and when determining (405, S510) by the management device that the second mapping relationship is the same as the first mapping relationship, determining that the channel for managing the IPv4 terminal is established correctly.