Abstract: A method for managing network connections includes steps of: in response to receipt of a request for establishing a new network connection, storing in a connection-tracking (Conntrack) table an entry of tracked connection data that is related to the new network connection to be established, and updating a current tracked-connection count by adding one thereto; determining a priority level of the new network connection according to a data packet transmitted through the new network connection; and determining whether to output data packets that are received through the new network connection based at least on the current tracked-connection count and the priority level of the new network connection.

Abstract: A method for managing data throughput of a network device is provided. The method includes: determining a network communication as belonging to a first class or a second class; enqueuing each packet received through the network communication determined as belonging to the first class to a first queue, and enqueuing each packet received through the networking communication determined as belonging to the second class to a second queue; dequeuing the first and second queues at a dequeuing ratio; determining a data rate of dequeuing the second queue; and adjusting the dequeuing ratio based on the data rate of dequeuing the second queue thus determined, a total bandwidth, and a guaranteed minimum bandwidth for the network communication determined as belonging to the first class.

Abstract: A method for managing network connections includes steps of: in response to receipt of a request for establishing a new network connection, storing in a connection-tracking (Conntrack) table an entry of tracked connection data that is related to the new network connection to be established, and updating a current tracked-connection count by adding one thereto; determining a priority level of the new network connection according to a data packet transmitted through the new network connection; and determining whether to output data packets that are received through the new network connection based at least on the current tracked-connection count and the priority level of the new network connection.

Abstract: A method for managing data throughput of a network device is provided. The method includes: determining a network communication as belonging to a first class or a second class; enqueuing each packet received through the network communication determined as belonging to the first class to a first queue, and enqueuing each packet received through the networking communication determined as belonging to the second class to a second queue; dequeuing the first and second queues at a dequeuing ratio; determining a data rate of dequeuing the second queue; and adjusting the dequeuing ratio based on the data rate of dequeuing the second queue thus determined, a total bandwidth, and a guaranteed minimum bandwidth for the network communication determined as belonging to the first class.

Abstract: A method is implemented by a router and includes: upon receiving a query on an Internet Protocol (IP) address for a domain name, sending the query to a DNS server in order for the DNS server to translate the domain name to an IP address and to transmit a DNS response containing the domain name and the IP address to the router; recording the domain name and the IP address in a table; sending the DNS response to an endpoint device so as to enable the endpoint device to establish a link with an application server via the router based on the IP address; finding the domain name in the lookup table based on the IP address; and determining a type of a service provided by the application server based on the domain name with reference to another table.

Abstract: A method for adjusting a total bandwidth for a network device is provided. The method includes: for every predetermined time period, determining a data rate of receiving data packets by the network device through a network communication during the predetermined time period; designating the greater one of the data rate and the total bandwidth as a maximal data rate; when a preset condition is not satisfied, using the maximal data rate as the total bandwidth; and when the preset condition is satisfied, determining an adjusted data rate that is smaller than the maximal data rate based on the maximal data rate, and using the adjusted data rate as the total bandwidth.