Network.connections

Description

All connected players.

On a client this contains only the server.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void OnGUI() {
        if (GUILayout.Button("Disconnect first player"))
            if (Network.connections.Length > 0) {
                Debug.Log("Disconnecting: " + Network.connections[0].ipAddress + ":" + Network.connections[0].port);
                Network.CloseConnection(Network.connections[0], true);
            }
        
    }
}