ndsctl是通过unix socket与nodogsplash之间通过socket来实现进程之间的通信。ndsctl的主要作用如下：

root@DayDream:/# ndsctl 
Usage: ndsctl [options] command [arguments]

options:
  -s <path>         Path to the socket
  -h                Print usage

commands:
  status            View the status of nodogsplash
  clients           Display machine-readable client list
  stop              Stop the running nodogsplash
  auth ip           Authenticate user with specified ip
  deauth mac|ip     Deauthenticate user with specified mac or ip
  block mac         Block the given MAC address
  unblock mac       Unblock the given MAC address
  allow mac         Allow the given MAC address
  unallow mac       Unallow the given MAC address
  trust mac         Trust the given MAC address
  untrust mac       Untrust the given MAC address
  loglevel n        Set logging level to n
  password pass     Set gateway password
  username name     Set gateway username

命令详解：

1.ndsctl status
查看nodog当前的运行状态

root@DayDream:/# ndsctl status
==================
NoDogSplash Status
====
Version: 0.9_beta9.9.9
Uptime: 0d 0h 23m 21s
Gateway Name: NoDogSplash
Managed interface: br-lan
Managed IP range: 0.0.0.0/0
Server listening: 192.168.20.1:2050
Splashpage: /etc/nodogsplash/htdocs/splash.html
Traffic control: no
Total download: 7203 kByte; avg: 41.1314 kbit/s
Total upload: 533 kByte; avg: 3.04544 kbit/s
====
Client authentications since start: 3
Current clients: 1

Client 0
  IP: 192.168.20.171 MAC: 38:bc:1a:10:bd:75
  Added:   Thu Jul  9 02:24:18 2015
  Active:  Thu Jul  9 02:28:27 2015
  Active duration: 0d 0h 4m 9s
  Added duration:  0d 0h 4m 28s
  Token: 2ea483c0
  State: Authenticated
  Download: 874 kByte; avg: 26.1069 kbit/s
  Upload:   105 kByte; avg: 3.15487 kbit/s

====
Blocked MAC addresses: none
Allowed MAC addresses: N/A
Trusted MAC addresses: none
========

可以看到当前连接该热点的主机数量是 1 个，IP为 192.168.20.171 MAC地址为：38:bc:1a:10:bd:75
Download: 874 kByte; avg: 26.1069 kbit/s
Upload: 105 kByte; avg: 3.15487 kbit/s
使用的流量情况 速度等。

2 ndsctl clients
查看所有已连接设备的情况

root@DayDream:/# ndsctl clients
1

client_id=0
ip=192.168.20.171
mac=38:bc:1a:10:bd:75
added=1436408658
active=1436409168
duration=510
token=2ea483c0
state=Authenticated
downloaded=2026
avg_down_speed=31.7866
uploaded=366
avg_up_speed=5.75354

3 ndsctl stop
停止运行

4 ndsctl auth ip
放行某个IP地址，即认证通过

root@DayDream:/# ndsctl auth 192.168.20.171
Client 192.168.20.171 authenticated.

5 ndsctl deauth mac|ip
强制禁止某个IP或者MAC。

root@DayDream:/# ndsctl deauth 192.168.20.171
Client 192.168.20.171 deauthenticated.

6 ndsctl block MAC
阻止某个 MAC地址的主机访问网络

root@DayDream:/# ndsctl block 38:bc:1a:10:bd:75
MAC 38:bc:1a:10:bd:75 blocked.

7 ndsctl unblock MAC
运行某个 MAC 地址的主机访问网络

root@DayDream:/# ndsctl unblock 38:bc:1a:10:bd:75
MAC 38:bc:1a:10:bd:75 unblocked.