Connect to bitcoind from a different device within the same local network
If you're going to just use within the network and not outside of the LAN then as mention below, use rpcallowip=0.0.0.0/0 will work and also don't use rpcconnect as it may cause issues. If your planning future to use that option outside of the LAN (aka WAN) then there will be security issues so make sure to not use it outside of the LAN unless you can configure it correctly to not allow accept all ip.