download - download from a given url
get_connections - quieries the connections belonging to a given process
system_resolvers - provides connection resolution methods that are likely to be available
port_usage - brief description of the common usage for a port

is_valid_ipv4_address - checks if a string is a valid IPv4 address
is_valid_ipv6_address - checks if a string is a valid IPv6 address
is_valid_port - checks if something is a valid representation for a port
is_private_address - checks if an IPv4 address belongs to a private range or not

address_to_int - provides an integer representation of an IP address

expand_ipv6_address - provides an IPv6 address with its collapsed portions expanded
get_mask_ipv4 - provides the mask representation for a given number of bits
get_mask_ipv6 - provides the IPv6 mask representation for a given number of bits