user level can't bind socket address & port

[±èÇö±¹]

hi, all

as the title user level can't bind socket address & port

for example,
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    sock.bind((iface, port))

if i login user level, python interpreter generate error message like that
"    sock.bind((iface, port))
     socket.error: (13, 'Permission denied') "

How can I bind socket user level.

please send comment......