Skip to Content

Wiki source code of Remote Access Gateway

Version 19.15 by Xiaoling on 2022/07/14 14:01
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 concern, the remote.it only available base on end user demand.
11
12 (% style="color:red" %)**Important Notice:**
13
14 (% style="color:red" %)* **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
17 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]].
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 ~* **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
41
42
43 == **2.1 For Firmware Version lower than lgw~-~-build-v5.4.1616478814-20210323-1355** ==
44
45 === **2.1.1 End User Guide to use SSH access** ===
46
47 Go to this the Reverse SSH page as below:
48
49 [[image:image-20220527102348-1.png]]
50
51 Get the RSSH configure page
52
53
54 [[image:image-20220527103251-2.png]]
55
56 Connection OK.
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 === **2.1.2 How to Ser up a Reverse SSH access** ===
70
71 Advance administrator can config a SSH server to provide support their end user themselves. Instruction is as below:
72
73 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.
74 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.
75 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.
76 1. Give a free port to the user and ask them to configure RSSH page in the gateway.
77 1. In your server or other machine, you will able to access to the end user device by below command:
78
79 (% class="box" %)
80 (((
81 $ ssh   -p <End User Host Port>   root@<Host Address>
82 )))
83
84 (((
85 (% 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.**
86 )))
87
88
89 ==== **2.1.2.1 Note for set up RSSH server** ====
90
91 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.
92
93 (% class="box" %)
94 (((
95 [root@iZt4n22vqvm7ajogrfiif6Z ~~]# lsof -i :9102 ~-~-> check the port 9102 process status (change 9102 to the actually port for your gateway.
96 COMMAND   PID    USER   FD   TYPE   DEVICE SIZE/OFF NODE NAME
97 sshd    21430 sshuser   15u  IPv4 47567059      0t0  TCP localhost:bacula-fd (LISTEN)
98 [root@iZt4n22vqvm7ajogrfiif6Z ~~]# kill 21430   ~-~-> Kill PID of this process.
99 [root@iZt4n22vqvm7ajogrfiif6Z ~~]# lsof -i :9102        
100 [root@iZt4n22vqvm7ajogrfiif6Z ~~]#
101 )))
102
103
104 == **2.2 For Firmware Version higher than lgw~-~-build-v5.4.1618196981-20210412-1111** ==
105
106 Below gateway support reverse SSH access:
107
108 (% class="box" %)
109 (((
110 Firmware Version >lgw~-~-build-v5.4.1618196981-20210412-1111 Firmware Download
111 LG01N, OLG01N (Note: LG01-P LG01-S doesn't support)
112 LG02, OLG02
113 LG308, DLOS8
114 LPS8
115 LIG16
116 )))
117
118
119 === **2.2.1 End User Guide to use SSH access** ===
120
121 ==== **2.2.1.1 Install the SSH service for server** ====
122
123 ===== **2.2.1.1.1 Step 1 : Download the SSH service code** =====
124
125 1).git clone [[https:~~/~~/github.com/dragino/rssh-server.git>>url:https://github.com/dragino/rssh-server.git]] rssh-server
126
127 [[image:image-20220527105447-1.png]]
128
129 git clone rssh-server
130
131
132 2).cd rssh-server; sudo make ~-~--> to Generate the execute file：rssh_serv
133
134 [[image:image-20220527105511-2.png]]
135
136 Generate the execute file
137
138
139 **Debug** :
140
141 (% class="box" %)
142 (((
143 if you git fail.  ~-~->    (% style="color:#4f81bd" %)**sudo: git: command not found.**(%%)
144 please install git.  ~-~->  (% style="color:#4f81bd" %)**yum install git -y  or  apt-get install git -y.**
145 )))
146
147 (% class="box" %)
148 (((
149 if you make error 127,it** (% style="color:#4f81bd" %)lack of gcc.(%%)**
150 please install gcc.    ~-~->(% style="color:#4f81bd" %)**yum install gcc.**
151 )))
152
153 [[image:image-20220527105856-3.png]]
154
155 lack of gcc
156
157 (% class="box" %)
158 (((
159 if you make a fatal error : sqlite3.h,it (% style="color:#4f81bd" %)**lack of sqlite3.**(%%)
160 please insatell (% style="color:#4f81bd" %)**sqlite3**.
161 )))
162
163 [[image:image-20220527105918-4.png]]
164
165 lack of sqlite3
166
167
168 How to install Sqlit3
169
170 (% class="box" %)
171 (((
172 Step1: Download the SQLit3 installation package
173 sudo wget [[https:~~/~~/www.sqlite.org/2021/sqlite-autoconf-3350400.tar.gz>>url:https://www.sqlite.org/2021/sqlite-autoconf-3350400.tar.gz]]
174 Step2: tar the SQLit3 installation package
175 sudo tar -zxvf sqlite-autoconf-3350300.tar.gz
176 Step3: Generate the makefile
177 cd sqlite-autoconf-3350300/;./configure
178 Step4: Compile makefile
179 sudo make
180 Step5: Install makefile
181 sudo make install
182 Check:
183 cd /usr/local/bin;ls -al                             ~-~->    Check to see if there is a file for sqlite3
184 cd sqlite-autoconf-3350300/;./sqlite3 test.db        ~-~->    Test whether the sqlite3 was installed successfully
185 debug:
186 If you get the imformation that is SQLite header and source version mismatch, when you execute./sqlite3 test.db.
187 Please execute the command /sbin/ldconfig.
188 After that execute the command ./sqlite3 test.db again.
189 )))
190
191
192 ===== **2.2.1.1.2 Step 2 : Install and run the RSS service** =====
193
194 1): intall database for /var/rsshdb.sqlite3 and Server development port for 3721(The default is 3721)
195
196 user must enter the root account and run the following commands
197
198 (% class="box" %)
199 (((
200 $ ./create_sqlite3_db.sh
201 $ ./rssh_serv -p  3721 2>&1 &
202 $ ps -ef | grep rssh_serv check 3721 port
203 )))
204
205 [[image:image-20220527110436-6.png]]
206
207 intall database and server development port
208
209 **Debug:**
210
211 (% class="box" %)
212 (((
213 Check /var/rsshdb.sqlite3 ~-~->(% style="color:#4f81bd" %)** ls /var/rsshdb.sqlite3**(%%)
214 Check ls /var/rsshdb.sqlite3 ~-~-> (% style="color:#4f81bd" %)**sudo chmod 777 rssh_serv**
215 )))
216
217 (% class="box" %)
218 (((
219 if** fail to open dpvlry or to bind to it**
220 please kill rssh_serv,and run (% style="color:#4f81bd" %)** ./rssh_serv -p  3721 2>&1 &** (%%) again
221 )))
222
223
224 ===== **2.2.1.1.3 Step 3 : Create a minimal SSH user (reverse SSH proxy for the gateway)** =====
225
226 **1): (% style="color:#4f81bd" %)sudo useradd XXXXX(%%)** (custom user name)
227
228 **2):** (% style="color:#4f81bd" %)**sudo passwd xxxxxx**
229
230 **3):** (% style="color:#4f81bd" %)**cp /bin/bash /bin/rbash**
231
232 **4):** (% style="color:#4f81bd" %)**sudo nano /etc/passwd**(%%) ~-~-> Change /bin/bash to /bin/rbash
233
234 **5):** (% style="color:#4f81bd" %)**sudo nano /home/xxxxx/.bashrc**(%%) **empty it,and input export PATH=$HOME/bin**
235
236 **6):** (% style="color:#4f81bd" %)**sudo nano /home/xxxxx/.bash_profile**(%%) **empty it,and input export PATH=$HOME/bin**
237
238 **Now user "XXXXX" is the user with limited permissions of the current system**
239
240
241 === **2.2.2 How does user get the gateway to connect to a user's private server** ===
242
243 ===== **2.2.2.1 Step 1 : Come bace the gateway web UI for get the gateway Public key** =====
244
245 1) in the system ~-~-> (% style="color:#4f81bd" %)**Remote Mgmt**
246
247 [[image:image-20220527110531-7.png]]
248
249 Remote Mgmt
250
251
252 ===== **2.2.2.2 Step 2 : Authorization server** =====
253
254 copy the Gateway Publickey into user's private server "/home/XXXXX/.ssh/authorized_keys" file.
255
256 [[image:image-20220527110625-8.png]]
257
258 Publickey
259
260
261 ===== **2.2.2.3 Step 3 : connecte private server** =====
262
263 in the gateway web UI
264
265 [[image:image-20220527110700-9.png]]
266
267 gateway web UI
268
269 (% class="box" %)
270 (((
271 (% style="color:#4f81bd" %)**Connection Type **(%%) : If user's least privileged user with private server uses a password, select (% style="color:#4f81bd" %)**Public Key**(%%)
272 **Note:if user's least privileged user no uses a password,choose from both is fine**
273 (% style="color:#4f81bd" %)**Login ID**(%%)             : Input user name "eg : "XXXXX"
274 (% style="color:#4f81bd" %)**Host Address**(%%)         : Input user's private server address
275 (% style="color:#4f81bd" %)**Connect at Startupt**(%%): Choose to enable connect once device is powered.
276 Click Save and then Connect
277 )))
278
279
280 ===== **2.2.2.4 Step 4 : Cheak is fine** =====
281
282 Rssh Host connection Ok
283
284 [[image:image-20220527111009-10.png]]
285
286 Rssh Host connection Ok
287
288
289 user can use common ps | grep ssh to check it in the gateway.
290
291 [[image:image-20220527111041-11.png]]
292
293 Check the gateway
294
295
296 ===== **2.2.2.5 Step 5 : Create an authorization key file** =====
297
298 1):sudo mkdir /home/xxxxx/.ssh; sudo touch /home/xxxxx/.ssh/authorizedkey
299
300 **Debug:**
301
302 (% class="box" %)
303 (((
304 check: sudo ls /home/xxxxx/.ssh/authorizedkey
305 )))
306
307
308 === **2.2.3 How to Ser up a Reverse SSH access** ===
309
310 ==== **2.2.3.1 Step 1 : Log into the server system** ====
311
312 [[image:image-20220527111145-12.png]]
313
314 Loging server
315
316
317 ==== **2.2.3.2 Step 2 : access the gateway** ====
318
319 (% class="box" %)
320 (((
321 $ cd rssh-server/
322 )))
323
324 Check the gateway linking to the server $ ./connect-gw.sh -l
325
326 [[image:image-20220527111219-13.png]]
327
328 Check the gateway linking to the server
329
330
331 access the gateway $ ./connect-gw.sh <GWID>
332
333 [[image:image-20220527111300-14.png]]
334
335 reverse ssh access the gateway