Masternode address is your public IP address? port is ??
yes your public adress, choose any port
push "get config"
you will ge something like:
rpcallowip=127.0.0.1
rpcuser=REPLACEME
rpcpassword=REPLACEME
server=1
listen=1
port=REPLACEMEWITHYOURPORT
masternode=1
masternodeaddr=yourpublicip:port
masternodeprivkey=yourprivatekey
staking=0
send 10000 coins to masternodes wallet address