Wiki source code of Remote Access Gateway

Version 22.1 by Kilight Cao on 2022/07/25 10:38
Show last authors
1 **Table of Contents:**
2
3 {{toc/}}
4
5
6
7 = **1.  Use Remote.it service** =
8
9
10 Remote.it for remote access is available in the latest Dragino firmware for gateway. For security concerns, the remote.it only available base on end-user demand.
11
12 (% style="color:red" %)**Important Notice:**
13
14 * Remote.it access will give full control of your device to remote support.
15 * The Remote.it allow Dragino Support to remote access to the device, If user want to access himself, it need to sign up for an remote.it account.
16 * For how to use remoteit, please see : [[Remoteit user instruction for Dragino Gateway>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=Dragino-Remoteit_User_Manual.pdf]].
17
18
19
20 = **2.  RSSH Introduction** =
21
22
23 Reverse SSH for remote access is available in the latest Dragino firmware for gateway. For security concern, the RSSH only available base on end user demand.
24
25 (% style="color:red" %)**Important Notice:**
26
27 * (% style="color:red" %)**RSSH access will give full control of your device to remote support. Please remove sensitivity info before perform this**
28 * (% style="color:red" %)**This RSSH allow Dragino Support to remote access to the device, If user want to access himself, he need to set up the RSSH server himself.**
29
30 Below gateway support reverse SSH access:
31
32 * Firmware Version > LG02_LG08-5.3.1580178039 [[Firmware Download>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]]
33 * LG01N, OLG01N (Note: LG01-P LG01-S doesn't support)
34 * LG02, OLG02
35 * LG308, DLOS8
36 * LPS8
37 * LIG16
38 * MS14 series if installed with the same firmware.
39
40 == **2.1  For Firmware Version lower than lgw~-~-build-v5.4.1616478814-20210323-1355** ==
41
42
43 === **2.1.1  End User Guide to use SSH access** ===
44
45
46 Go to this the Reverse SSH page as below:
47
48 [[image:image-20220527102348-1.png]]
49
50 Get the RSSH configure page
51
52
53 [[image:image-20220527103251-2.png]]
54
55 Connection OK.
56
57
58 * (% style="color:#4f81bd" %)**Login ID**(%%):  Input (% style="color:#4f81bd" %)**sshuser**
59 * (% style="color:#4f81bd" %)**Host Address**(%%):  Input** (% style="color:#4f81bd" %)support.dragino.com(%%)**
60 * (% style="color:#4f81bd" %)**Host Port**(%%):  Please email to support @ dragino.com to get a valid host port.
61 * (% style="color:#4f81bd" %)**Connect at Startupt**(%%): Choose to enable connect once device is powered.
62 * (% style="color:#4f81bd" %)**Network Keys:          **(%%)Click the Generate keys to generate the keys and download / mail it to Dragino support so Dragino can prepare the remote access to
63
64 (((
65 After doing above, please download and mail the public keys to Dragino support and wait for our mail for the valid host port. Input the valid host port got from our support and click connect so we can remote access to your gateway.
66 )))
67
68
69
70 === **2.1.2  How to Ser up a Reverse SSH access** ===
71
72
73 Advance administrator can config a SSH server to provide support their end user themselves. Instruction is as below:
74
75 1. Prepare a Linux server with public IP. The gateways need to be able to create SSH connection to this server. We recommend to use a server that performs no other function than to support the RSSH access, and to have no additional accounts active, and no access from the Internet that uses ID/password authentication.
76 1. In the gateway settings, The (% style="color:#4f81bd" %)**Login ID**(%%) will be the SSH user for this server and the (% style="color:#4f81bd" %)**Host Address**(%%) is the server address.
77 1. Ask your end user to send you the key generate in the gateway and put them in /home/<Login ID>/.ssh/authorized_key file.
78 1. Give a free port to the user and ask them to configure RSSH page in the gateway.
79 1. In your server or other machine, you will able to access to the end user device by below command:
80
81 (% class="box" %)
82 (((
83 **$ ssh   -p <End User Host Port>   root@<Host Address>**
84 )))
85
86 (((
87 (% style="color:red" %)**Remote RSSH Access allow the gateway to connect to SSH server as well. This will create risk to the RSSH server. Please make sure the account use for Gateway Access has the lowest access right.**
88 )))
89
90
91
92 ==== (% style="color:blue" %)**Note for set up RSSH server**(%%) ====
93
94
95 If gateway reboot or the connection is incidentely close by end node. The port in SSH server will still be occupy for a long time. Administrator can use below commands to release the port.
96
97 (% class="box" %)
98 (((
99 **[root@iZt4n22vqvm7ajogrfiif6Z ~~]# lsof -i :9102 ~-~-> check the port 9102 process status (change 9102 to the actually port for your gateway.
100 COMMAND   PID    USER   FD   TYPE   DEVICE SIZE/OFF NODE NAME
101 sshd    21430 sshuser   15u  IPv4 47567059      0t0  TCP localhost:bacula-fd (LISTEN)
102 [root@iZt4n22vqvm7ajogrfiif6Z ~~]# kill 21430   ~-~-> Kill PID of this process.
103 [root@iZt4n22vqvm7ajogrfiif6Z ~~]# lsof -i :9102        
104 [root@iZt4n22vqvm7ajogrfiif6Z ~~]#**
105 )))
106
107
108
109 == **2.2  For Firmware Version higher than lgw~-~-build-v5.4.1618196981-20210412-1111** ==
110
111
112 Below gateway support reverse SSH access:
113
114 (% class="box" %)
115 (((
116 **Firmware Version >lgw~-~-build-v5.4.1618196981-20210412-1111 Firmware Download
117 LG01N, OLG01N (Note: LG01-P LG01-S doesn't support)
118 LG02, OLG02
119 LG308, DLOS8
120 LPS8
121 LIG16**
122 )))
123
124
125
126 === **2.2.1  End User Guide to use SSH access** ===
127
128
129 ==== **2.2.1.1  Install the SSH service for server** ====
130
131
132 ===== (% style="color:blue" %)**Step 1 : Download the SSH service code**(%%) =====
133
134
135 **1).  **git clone [[https:~~/~~/github.com/dragino/rssh-server.git>>url:https://github.com/dragino/rssh-server.git]] rssh-server
136
137 [[image:image-20220527105447-1.png]]
138
139 git clone rssh-server
140
141
142 **2). ** cd rssh-server; sudo make ~-~--> to Generate the execute file：rssh_serv
143
144 [[image:image-20220527105511-2.png]]
145
146 Generate the execute file
147
148
149 **Debug** :
150
151 (% class="box" %)
152 (((
153 **if you git fail.  ~-~->**    (% style="color:#4f81bd" %)**sudo: git: command not found.**(%%)
154 **please install git.  ~-~->**  (% style="color:#4f81bd" %)**yum install git -y  or  apt-get install git -y.**
155 )))
156
157 (% class="box" %)
158 (((
159 **if you make error 127,it (% style="color:#4f81bd" %)lack of gcc.(%%)**
160 **please install gcc.    ~-~-> (% style="color:#4f81bd" %)yum install gcc.(%%)**
161 )))
162
163 [[image:image-20220527105856-3.png]]
164
165 lack of gcc
166
167
168 (% class="box" %)
169 (((
170 **if you make a fatal error : sqlite3.h,it** (% style="color:#4f81bd" %)**lack of sqlite3.**(%%)
171 **please insatell (% style="color:#4f81bd" %)sqlite3(%%)**(% style="color:#4f81bd" %).
172 )))
173
174 [[image:image-20220527105918-4.png]]
175
176 lack of sqlite3
177
178
179 (% style="color:blue" %)**How to install Sqlit3:**
180
181 (% class="box" %)
182 (((
183 (% style="color:#037691" %)**Step1:**(%%) Download the SQLit3 installation package
184 sudo wget [[https:~~/~~/www.sqlite.org/2021/sqlite-autoconf-3350400.tar.gz>>url:https://www.sqlite.org/2021/sqlite-autoconf-3350400.tar.gz]]
185
186 (% style="color:#037691" %)**Step2:**(%%) tar the SQLit3 installation package
187 sudo tar -zxvf sqlite-autoconf-3350300.tar.gz
188
189 (% style="color:#037691" %)**Step3:**(%%) Generate the makefile
190 cd sqlite-autoconf-3350300/;./configure
191
192 (% style="color:#037691" %)**Step4:**(%%) Compile makefile
193 sudo make
194
195 (% style="color:#037691" %)**Step5: **(%%)Install makefile
196 sudo make install
197
198 (% style="color:#037691" %)**Check:**(%%)
199 cd /usr/local/bin;ls -al  ~-~->    Check to see if there is a file for sqlite3
200 cd sqlite-autoconf-3350300/;./sqlite3 test.db        ~-~->  Test whether the sqlite3 was installed successfully
201
202 (% style="color:#037691" %)**debug:**(%%)
203 If you get the imformation that is SQLite header and source version mismatch, when you execute./sqlite3 test.db.
204 Please execute the command /sbin/ldconfig.
205 After that execute the command ./sqlite3 test.db again.
206 )))
207
208
209
210 ===== (% style="color:blue" %)**Step 2 : Install and run the RSS service**(%%) =====
211
212
213 **1):**  intall database for /var/rsshdb.sqlite3 and Server development port for 3721(The default is 3721)
214
215 user must enter the root account and run the following commands
216
217 (% class="box" %)
218 (((
219 **~ $ ./create_sqlite3_db.sh
220 $ ./rssh_serv -p  3721 2>&1 &
221 $ ps -ef | grep rssh_serv check 3721 port**
222 )))
223
224 [[image:image-20220527110436-6.png]]
225
226 intall database and server development port
227
228
229 **Debug:**
230
231 (% class="box" %)
232 (((
233 **Check /var/rsshdb.sqlite3  ~-~->(% style="color:#4f81bd" %)  ls /var/rsshdb.sqlite3(%%)**
234 **Check ls /var/rsshdb.sqlite3 ~-~->**  (% style="color:#4f81bd" %)**sudo chmod 777 rssh_serv**
235 )))
236
237 (% class="box" %)
238 (((
239 **if fail to open dpvlry or to bind to it**
240 **please kill rssh_serv,and run (% style="color:#4f81bd" %) ./rssh_serv -p  3721 2>&1 &(%%)**(% style="color:#4f81bd" %) (%%)** again**
241 )))
242
243
244
245 ===== (% style="color:blue" %)**Step 3 : Create a minimal SSH user (reverse SSH proxy for the gateway)**(%%) =====
246
247
248 **1): (% style="color:#4f81bd" %)sudo useradd XXXXX(%%)** **(custom user name)**
249
250 **2):** (% style="color:#4f81bd" %)**sudo passwd xxxxxx**
251
252 **3):** (% style="color:#4f81bd" %)**cp /bin/bash /bin/rbash**
253
254 **4):** (% style="color:#4f81bd" %)**sudo nano /etc/passwd**(%%)  ** ~-~-> Change /bin/bash to /bin/rbash**
255
256 **5):** (% style="color:#4f81bd" %)**sudo nano /home/xxxxx/.bashrc**(%%) **empty it,and input export PATH=$HOME/bin**
257
258 **6):** (% style="color:#4f81bd" %)**sudo nano /home/xxxxx/.bash_profile**(%%) **empty it,and input export PATH=$HOME/bin**
259
260
261 (% style="color:red" %)**Now user "XXXXX" is the user with limited permissions of the current system**
262
263
264
265 === **2.2.2  How does user get the gateway to connect to a user's private server** ===
266
267
268 ===== (% style="color:blue" %)**Step 1 : Come bace the gateway web UI for get the gateway Public key**(%%) =====
269
270
271 **1) in the system ~-~->** (% style="color:#4f81bd" %)**Remote Mgmt**
272
273 [[image:image-20220527110531-7.png]]
274
275 Remote Mgmt
276
277
278
279 ===== (% style="color:blue" %)**Step 2 : Authorization server**(%%) =====
280
281
282 copy the Gateway Publickey into user's private server "/home/XXXXX/.ssh/authorized_keys" file.
283
284 [[image:image-20220527110625-8.png]]
285
286 Publickey
287
288
289
290 ===== (% style="color:blue" %)**Step 3 : connecte private server**(%%) =====
291
292
293 in the gateway web UI
294
295 [[image:image-20220527110700-9.png]]
296
297 gateway web UI
298
299
300 (% class="box" %)
301 (((
302 (% style="color:#4f81bd" %)**Connection Type **(%%) :  **If user's least privileged user with private server uses a password, select** (% style="color:#4f81bd" %)**Public Key**(%%)
303 (% style="color:red" %)**Note: if user's least privileged user no uses a password,choose from both is fine**(%%)
304 (% style="color:#4f81bd" %)**Login ID**(%%) :  ** Input user name "eg : "XXXXX"**
305 (% style="color:#4f81bd" %)**Host Address**(%%)  :  ** Input user's private server address**
306 (% style="color:#4f81bd" %)**Connect at Startupt **(%%):  ** Choose to enable connect once device is powered.**
307 **Click Save and then Connect**
308 )))
309
310
311
312 ===== (% style="color:blue" %)**Step 4 : Cheak is fine**(%%) =====
313
314
315 Rssh Host connection Ok
316
317 [[image:image-20220527111009-10.png]]
318
319 Rssh Host connection Ok
320
321
322 user can use common ps | grep ssh to check it in the gateway.
323
324 [[image:image-20220527111041-11.png]]
325
326 Check the gateway
327
328
329
330 ===== (% style="color:blue" %)**Step 5 : Create an authorization key file**(%%) =====
331
332
333 **1):**  **sudo mkdir /home/xxxxx/.ssh; sudo touch /home/xxxxx/.ssh/authorizedkey**
334
335
336 **Debug:**
337
338 (% class="box" %)
339 (((
340 **~ check: sudo ls /home/xxxxx/.ssh/authorizedkey**
341 )))
342
343
344
345 === **2.2.3  How to Ser up a Reverse SSH access** ===
346
347
348 ==== (% style="color:blue" %)**Step 1 : Log into the server system**(%%) ====
349
350
351 [[image:image-20220527111145-12.png]]
352
353 Loging server
354
355
356
357 ==== (% style="color:blue" %)**Step 2 : access the gateway**(%%) ====
358
359
360 (% class="box" %)
361 (((
362 **$ cd rssh-server/**
363 )))
364
365 Check the gateway linking to the server $ ./connect-gw.sh -l
366
367 [[image:image-20220527111219-13.png]]
368
369 Check the gateway linking to the server
370
371
372
373 access the gateway $ ./connect-gw.sh <GWID>
374
375 [[image:image-20220527111300-14.png]]
376
377 reverse ssh access the gateway
378
379

Applications

Navigation

Copyright ©2010-2022 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0