Wiki source code of Remote Access Gateway

Version 1.3 by Xiaoling on 2022/05/12 14:08
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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 * Login ID: Input sshuser
53 * Host Address: Input support.dragino.com
54 * Host Port: : Please email to support @ dragino.com to get a valid host port.
55 * Connect at Startupt: : Choose to enable connect once device is powered.
56 * 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 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.
59
60
61 === 2.1.2 How to Ser up a Reverse SSH access ===
62
63 Advance administrator can config a SSH server to provide support their end user themselves. Instruction is as below:
64
65 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.
66 1. In the gateway settings, The Login ID will be the SSH user for this server and the Host Address is the server address.
67 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.
68 1. Give a free port to the user and ask them to configure RSSH page in the gateway.
69 1. In your server or other machine, you will able to access to the end user device by below command:
70
71 {{{ $ ssh -p <End User Host Port> root@<Host Address>
72 }}}
73
74 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.
75
76 ==== 2.1.2.1 Note for set up RSSH server ====
77
78 * 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.
79
80 {{{[root@iZt4n22vqvm7ajogrfiif6Z ~]# lsof -i :9102 --> check the port 9102 process status (change 9102 to the actually port for your gateway.
81 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
82 sshd 21430 sshuser 15u IPv4 47567059 0t0 TCP localhost:bacula-fd (LISTEN)
83 [root@iZt4n22vqvm7ajogrfiif6Z ~]# kill 21430 --> Kill PID of this process.
84 [root@iZt4n22vqvm7ajogrfiif6Z ~]# lsof -i :9102
85 [root@iZt4n22vqvm7ajogrfiif6Z ~]#
86 }}}
87
88 == 2.2 For Firmware Version higher than lgw~-~-build-v5.4.1618196981-20210412-1111 ==
89
90 Below gateway support reverse SSH access:
91
92 {{{ Firmware Version >lgw--build-v5.4.1618196981-20210412-1111 Firmware Download
93 LG01N, OLG01N (Note: LG01-P LG01-S doesn't support)
94 LG02, OLG02
95 LG308, DLOS8
96 LPS8
97 LIG16
98 }}}
99
100 === 2.2.1 End User Guide to use SSH access ===
101
102 ==== 2.2.1.1 Install the SSH service for server ====
103
104 ===== 2.2.1.1.1 Step 1:Download the SSH service code =====
105
106 1).git clone [[https:~~/~~/github.com/dragino/rssh-server.git>>url:https://github.com/dragino/rssh-server.git]] rssh-server
107
108 [[image:https://wiki.dragino.com/images/thumb/d/d0/Git_clone.png/500px-Git_clone.png||height="80" width="500"]]
109
110 git clone rssh-server
111
112 2).cd rssh-server; sudo make ~-~--> to Generate the execute file：rssh_serv
113
114 [[image:https://wiki.dragino.com/images/thumb/e/e3/Generate_the_execute_file.png/500px-Generate_the_execute_file.png||height="103" width="500"]]
115
116 Generate the execute file
117
118 **Debug** :
119
120 {{{ if you git fail. --> sudo: git: command not found.
121 please install git. --> yum install git -y or apt-get install git -y.
122 }}}
123
124 {{{ if you make error 127,it lack of gcc.
125 please install gcc. -->yum install gcc.
126 }}}
127
128 [[image:https://wiki.dragino.com/images/d/d7/Lack_of_gcc.png||height="174" width="434"]]
129
130 lack of gcc
131
132 {{{ if you make a fatal error : sqlite3.h,it lack of sqlite3.
133 please insatell sqlite3.
134 }}}
135
136 [[image:https://wiki.dragino.com/images/thumb/9/93/Lack_of_sqlite3.png/500px-Lack_of_sqlite3.png||height="137" width="500"]]
137
138 lack of sqlite3
139
140 How to install Sqlit3
141
142 {{{ Step1:Download the SQLit3 installation package
143 sudo wget
144 Step2:tar the SQLit3 installation package
145 sudo tar -zxvf sqlite-autoconf-3350300.tar.gz
146 Step3:Generate the makefile
147 cd sqlite-autoconf-3350300/;./configure
148 Step4:Compile makefile
149 sudo make
150 Step5:Install makefile
151 sudo make install
152 Check:
153 cd /usr/local/bin;ls -al --> Check to see if there is a file for sqlite3
154 cd sqlite-autoconf-3350300/;./sqlite3 test.db --> Test whether the sqlite3 was installed successfully
155 debug:
156 If you get the imformation that is SQLite header and source version mismatch, when you execute./sqlite3 test.db.
157 Please execute the command /sbin/ldconfig.
158 After that execute the command ./sqlite3 test.db again.
159 }}}
160
161 ===== 2.2.1.1.2 Step 2 :Install and run the RSS service =====
162
163 1):intall database for /var/rsshdb.sqlite3 and Server development port for 3721(The default is 3721)
164
165 user must enter the root account and run the following commands
166
167 {{{ $ ./create_sqlite3_db.sh
168 $ ./rssh_serv -p 3721 2>&1 &
169 $ ps -ef | grep rssh_serv check 3721 port
170 }}}
171
172 [[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"]]
173
174 intall database and server development port
175
176 **Debug:**
177
178 {{{ Check /var/rsshdb.sqlite3 --> ls /var/rsshdb.sqlite3
179 Check ls /var/rsshdb.sqlite3 --> sudo chmod 777 rssh_serv
180 }}}
181
182 {{{ if fail to open dpvlry or to bind to it
183 please kill rssh_serv,and run ./rssh_serv -p 3721 2>&1 & again
184 }}}
185
186 ===== 2.2.1.1.3 Step 3 :Create a minimal SSH user (reverse SSH proxy for the gateway) =====
187
188 1):sudo useradd XXXXX (custom user name)
189
190 2):sudo passwd xxxxxx
191
192 3):cp /bin/bash /bin/rbash
193
194 4):sudo nano /etc/passwd ~-~-> Change /bin/bash to /bin/rbash
195
196 5):sudo nano /home/xxxxx/.bashrc **empty it,and input export PATH=$HOME/bin**
197
198 6):sudo nano /home/xxxxx/.bash_profile **empty it,and input export PATH=$HOME/bin**
199
200 **Now user "XXXXX" is the user with limited permissions of the current system**
201
202 === 2.2.2 How does user get the gateway to connect to a user's private server ===
203
204 ===== 2.2.2.1 Step1: Come bace the gateway web UI for get the gateway Public key =====
205
206 1)in the system ~-~-> Remote Mgmt/span>
207
208 [[image:https://wiki.dragino.com/images/thumb/8/8f/Remote_Mgmt.png/500px-Remote_Mgmt.png||height="367" width="500"]]
209
210 Remote Mgmt
211
212 ===== 2.2.2.2 Step2: Authorization server =====
213
214 copy the Gateway Publickey into user's private server "/home/XXXXX/.ssh/authorized_keys" file.
215
216 [[image:https://wiki.dragino.com/images/thumb/4/49/Publickey.png/500px-Publickey.png||height="81" width="500"]]
217
218 Publickey
219
220 ===== 2.2.2.3 Step3: connecte private server =====
221
222 in the gateway web UI
223
224 [[image:https://wiki.dragino.com/images/thumb/0/04/Gateway_web_UI.png/500px-Gateway_web_UI.png||height="389" width="500"]]
225
226 gateway web UI
227
228 {{{Connection Type : If user's least privileged user with private server uses a password, select Public Key
229 Note:if user's least privileged user no uses a password,choose from both is fine
230 Login ID : Input user name "eg : "XXXXX"
231 Host Address : Input user's private server address
232 Connect at Startupt: : Choose to enable connect once device is powered.
233 Click Save and then Connect
234 }}}
235
236 ===== 2.2.2.4 Step 4 :Cheak is fine =====
237
238 Rssh Host connection Ok
239
240 [[image:https://wiki.dragino.com/images/thumb/6/6f/Rssh_Host_connection_Ok.png/500px-Rssh_Host_connection_Ok.png||height="225" width="500"]]
241
242 Rssh Host connection Ok
243
244 user can use common ps | grep ssh to check it in the gateway.
245
246 [[image:https://wiki.dragino.com/images/thumb/a/ad/Check_the_gateway.png/500px-Check_the_gateway.png||height="47" width="500"]]
247
248 Check the gateway
249
250
251 ===== 2.2.2.5 Step5:Create an authorization key file =====
252
253 1):sudo mkdir /home/xxxxx/.ssh; sudo touch /home/xxxxx/.ssh/authorizedkey
254
255 **Debug:**
256
257 {{{ check: sudo ls /home/xxxxx/.ssh/authorizedkey
258 }}}
259
260 === 2.2.3 How to Ser up a Reverse SSH access ===
261
262 ==== 2.2.3.1 Step1: Log into the server system ====
263
264 [[image:https://wiki.dragino.com/images/thumb/2/26/Loging_server.png/500px-Loging_server.png||height="69" width="500"]]
265
266 Loging server
267
268 ==== 2.2.3.2 Step2:access the gateway ====
269
270 $ cd rssh-server/
271
272
273 Check the gateway linking to the server $ ./connect-gw.sh -l
274
275 [[image:https://wiki.dragino.com/images/thumb/e/ee/Check_gateway_link_server.png/500px-Check_gateway_link_server.png||height="157" width="500"]]
276
277 Check the gateway linking to the server
278
279
280 access the gateway $ ./connect-gw.sh <GWID>
281
282 [[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"]]
283
284 reverse ssh access the gateway

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