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Wiki source code of Remote Access Gateway

Version 2.3 by Xiaoling on 2022/05/12 14:15
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1 **Contents:**
2
3 {{toc/}}
4
5
6 = 1. Use Remote.it service =
7
8 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.
9
10 (% class="mark" %)**Important Notice:**
11
12 * (% class="mark" %)**Remote.it access will give full control of your device to remote support.**
13 * (% class="mark" %)**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.**
14
15 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]].
16
17
18 = 2. RSSH Introduction =
19
20 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.
21
22 (% class="mark" %)**Important Notice:**
23
24 * (% class="mark" %)**RSSH access will give full control of your device to remote support. Please remove sensitivity info before perform this**
25 * (% class="mark" %)**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.**
26
27 Below gateway support reverse SSH access:
28
29 * Firmware Version > LG02_LG08-5.3.1580178039 [[Firmware Download>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]]
30 * LG01N, OLG01N (Note: LG01-P LG01-S doesn't support)
31 * LG02, OLG02
32 * LG308, DLOS8
33 * LPS8
34 * LIG16
35 * MS14 series if installed with the same firmware.
36
37 == 2.1 For Firmware Version lower than lgw~-~-build-v5.4.1616478814-20210323-1355 ==
38
39 === 2.1.1 End User Guide to use SSH access ===
40
41 Go to this the Reverse SSH page as below:
42
43 [[image:https://wiki.dragino.com/images/thumb/5/55/RSSH_Menu2.png/500px-RSSH_Menu2.png||height="256" width="500"]]
44
45 Get the RSSH configure page
46
47
48 [[image:https://wiki.dragino.com/images/thumb/7/78/RSSH_Menu3.png/500px-RSSH_Menu3.png||height="313" width="500"]]
49
50 Connection OK.
51
52 * (% class="mark" %)**Login ID**(%%): Input (% class="mark" %)**sshuser**
53 * (% class="mark" %)**Host Address**(%%): Input(% class="mark" %)** support.dragino.com**
54 * (% class="mark" %)**Host Port**(%%): Please email to support @ dragino.com to get a valid host port.
55 * (% class="mark" %)**Connect at Startupt**(%%): Choose to enable connect once device is powered.
56 * (% class="mark" %)**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
57
58 (((
59 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.
60 )))
61
62
63 === 2.1.2 How to Ser up a Reverse SSH access ===
64
65 Advance administrator can config a SSH server to provide support their end user themselves. Instruction is as below:
66
67 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.
68 1. In the gateway settings, The (% class="mark" %)**Login ID**(%%) will be the SSH user for this server and the (% class="mark" %)**Host Address**(%%) is the server address.
69 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.
70 1. Give a free port to the user and ask them to configure RSSH page in the gateway.
71 1. In your server or other machine, you will able to access to the end user device by below command:
72
73 {{{ $ ssh -p <End User Host Port> root@<Host Address>
74 }}}
75
76 (% class="mark" %)**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.**
77
78
79 ==== 2.1.2.1 Note for set up RSSH server ====
80
81 * 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.
82
83 {{{[root@iZt4n22vqvm7ajogrfiif6Z ~]# lsof -i :9102 --> check the port 9102 process status (change 9102 to the actually port for your gateway.
84 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
85 sshd 21430 sshuser 15u IPv4 47567059 0t0 TCP localhost:bacula-fd (LISTEN)
86 [root@iZt4n22vqvm7ajogrfiif6Z ~]# kill 21430 --> Kill PID of this process.
87 [root@iZt4n22vqvm7ajogrfiif6Z ~]# lsof -i :9102
88 [root@iZt4n22vqvm7ajogrfiif6Z ~]#
89 }}}
90
91 == 2.2 For Firmware Version higher than lgw~-~-build-v5.4.1618196981-20210412-1111 ==
92
93 Below gateway support reverse SSH access:
94
95 {{{ Firmware Version >lgw--build-v5.4.1618196981-20210412-1111 Firmware Download
96 LG01N, OLG01N (Note: LG01-P LG01-S doesn't support)
97 LG02, OLG02
98 LG308, DLOS8
99 LPS8
100 LIG16
101 }}}
102
103 === 2.2.1 End User Guide to use SSH access ===
104
105 ==== 2.2.1.1 Install the SSH service for server ====
106
107 ===== 2.2.1.1.1 Step 1:Download the SSH service code =====
108
109 1).git clone [[https:~~/~~/github.com/dragino/rssh-server.git>>url:https://github.com/dragino/rssh-server.git]] rssh-server
110
111 [[image:https://wiki.dragino.com/images/thumb/d/d0/Git_clone.png/500px-Git_clone.png||height="80" width="500"]]
112
113 git clone rssh-server
114
115 2).cd rssh-server; sudo make ~-~--> to Generate the execute file：rssh_serv
116
117 [[image:https://wiki.dragino.com/images/thumb/e/e3/Generate_the_execute_file.png/500px-Generate_the_execute_file.png||height="103" width="500"]]
118
119 Generate the execute file
120
121 **Debug** :
122
123 {{{ if you git fail. --> sudo: git: command not found.
124 please install git. --> yum install git -y or apt-get install git -y.
125 }}}
126
127 {{{ if you make error 127,it lack of gcc.
128 please install gcc. -->yum install gcc.
129 }}}
130
131 [[image:https://wiki.dragino.com/images/d/d7/Lack_of_gcc.png||height="174" width="434"]]
132
133 lack of gcc
134
135 {{{ if you make a fatal error : sqlite3.h,it lack of sqlite3.
136 please insatell sqlite3.
137 }}}
138
139 [[image:https://wiki.dragino.com/images/thumb/9/93/Lack_of_sqlite3.png/500px-Lack_of_sqlite3.png||height="137" width="500"]]
140
141 lack of sqlite3
142
143 How to install Sqlit3
144
145 {{{ Step1:Download the SQLit3 installation package
146 sudo wget
147 Step2:tar the SQLit3 installation package
148 sudo tar -zxvf sqlite-autoconf-3350300.tar.gz
149 Step3:Generate the makefile
150 cd sqlite-autoconf-3350300/;./configure
151 Step4:Compile makefile
152 sudo make
153 Step5:Install makefile
154 sudo make install
155 Check:
156 cd /usr/local/bin;ls -al --> Check to see if there is a file for sqlite3
157 cd sqlite-autoconf-3350300/;./sqlite3 test.db --> Test whether the sqlite3 was installed successfully
158 debug:
159 If you get the imformation that is SQLite header and source version mismatch, when you execute./sqlite3 test.db.
160 Please execute the command /sbin/ldconfig.
161 After that execute the command ./sqlite3 test.db again.
162 }}}
163
164 ===== 2.2.1.1.2 Step 2 :Install and run the RSS service =====
165
166 1):intall database for /var/rsshdb.sqlite3 and Server development port for 3721(The default is 3721)
167
168 user must enter the root account and run the following commands
169
170 {{{ $ ./create_sqlite3_db.sh
171 $ ./rssh_serv -p 3721 2>&1 &
172 $ ps -ef | grep rssh_serv check 3721 port
173 }}}
174
175 [[image:https://wiki.dragino.com/images/thumb/c/cb/Intall_database_and_server_development_port.png/500px-Intall_database_and_server_development_port.png||height="70" width="500"]]
176
177 intall database and server development port
178
179 **Debug:**
180
181 {{{ Check /var/rsshdb.sqlite3 --> ls /var/rsshdb.sqlite3
182 Check ls /var/rsshdb.sqlite3 --> sudo chmod 777 rssh_serv
183 }}}
184
185 {{{ if fail to open dpvlry or to bind to it
186 please kill rssh_serv,and run ./rssh_serv -p 3721 2>&1 & again
187 }}}
188
189 ===== 2.2.1.1.3 Step 3 :Create a minimal SSH user (reverse SSH proxy for the gateway) =====
190
191 1):sudo useradd XXXXX (custom user name)
192
193 2):sudo passwd xxxxxx
194
195 3):cp /bin/bash /bin/rbash
196
197 4):sudo nano /etc/passwd ~-~-> Change /bin/bash to /bin/rbash
198
199 5):sudo nano /home/xxxxx/.bashrc **empty it,and input export PATH=$HOME/bin**
200
201 6):sudo nano /home/xxxxx/.bash_profile **empty it,and input export PATH=$HOME/bin**
202
203 **Now user "XXXXX" is the user with limited permissions of the current system**
204
205 === 2.2.2 How does user get the gateway to connect to a user's private server ===
206
207 ===== 2.2.2.1 Step1: Come bace the gateway web UI for get the gateway Public key =====
208
209 1)in the system ~-~-> Remote Mgmt/span>
210
211 [[image:https://wiki.dragino.com/images/thumb/8/8f/Remote_Mgmt.png/500px-Remote_Mgmt.png||height="367" width="500"]]
212
213 Remote Mgmt
214
215 ===== 2.2.2.2 Step2: Authorization server =====
216
217 copy the Gateway Publickey into user's private server "/home/XXXXX/.ssh/authorized_keys" file.
218
219 [[image:https://wiki.dragino.com/images/thumb/4/49/Publickey.png/500px-Publickey.png||height="81" width="500"]]
220
221 Publickey
222
223 ===== 2.2.2.3 Step3: connecte private server =====
224
225 in the gateway web UI
226
227 [[image:https://wiki.dragino.com/images/thumb/0/04/Gateway_web_UI.png/500px-Gateway_web_UI.png||height="389" width="500"]]
228
229 gateway web UI
230
231 {{{Connection Type : If user's least privileged user with private server uses a password, select Public Key
232 Note:if user's least privileged user no uses a password,choose from both is fine
233 Login ID : Input user name "eg : "XXXXX"
234 Host Address : Input user's private server address
235 Connect at Startupt: : Choose to enable connect once device is powered.
236 Click Save and then Connect
237 }}}
238
239 ===== 2.2.2.4 Step 4 :Cheak is fine =====
240
241 Rssh Host connection Ok
242
243 [[image:https://wiki.dragino.com/images/thumb/6/6f/Rssh_Host_connection_Ok.png/500px-Rssh_Host_connection_Ok.png||height="225" width="500"]]
244
245 Rssh Host connection Ok
246
247 user can use common ps | grep ssh to check it in the gateway.
248
249 [[image:https://wiki.dragino.com/images/thumb/a/ad/Check_the_gateway.png/500px-Check_the_gateway.png||height="47" width="500"]]
250
251 Check the gateway
252
253
254 ===== 2.2.2.5 Step5:Create an authorization key file =====
255
256 1):sudo mkdir /home/xxxxx/.ssh; sudo touch /home/xxxxx/.ssh/authorizedkey
257
258 **Debug:**
259
260 {{{ check: sudo ls /home/xxxxx/.ssh/authorizedkey
261 }}}
262
263 === 2.2.3 How to Ser up a Reverse SSH access ===
264
265 ==== 2.2.3.1 Step1: Log into the server system ====
266
267 [[image:https://wiki.dragino.com/images/thumb/2/26/Loging_server.png/500px-Loging_server.png||height="69" width="500"]]
268
269 Loging server
270
271 ==== 2.2.3.2 Step2:access the gateway ====
272
273 $ cd rssh-server/
274
275
276 Check the gateway linking to the server $ ./connect-gw.sh -l
277
278 [[image:https://wiki.dragino.com/images/thumb/e/ee/Check_gateway_link_server.png/500px-Check_gateway_link_server.png||height="157" width="500"]]
279
280 Check the gateway linking to the server
281
282
283 access the gateway $ ./connect-gw.sh <GWID>
284
285 [[image:https://wiki.dragino.com/images/thumb/b/b7/Reverse_ssh_access_the_gateway1.png/500px-Reverse_ssh_access_the_gateway1.png||height="230" width="500"]]
286
287 reverse ssh access the gateway