Wiki source code of Remote Access Gateway

Version 19.15 by Xiaoling on 2022/07/14 14:01

version	line-number	content
19.15	1	Table of Contents:
1.2	2
1.1	3	{{toc/}}
	4
	5
19.2	6
18.4	7	= 1. Use Remote.it service =
1.1	8
19.15	9
1.2	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.
1.1	11
2.15	12	(% style="color:red" %)Important Notice:
1.1	13
2.15	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.
1.1	16
1.2	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]].
1.1	18
	19
18.4	20	= 2. RSSH Introduction =
1.1	21
19.15	22
1.2	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.
1.1	24
2.15	25	(% style="color:red" %)Important Notice:
1.1	26
2.15	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.
1.1	29
1.2	30	Below gateway support reverse SSH access:
1.1	31
1.2	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.
1.1	39
1.2	40
19.13	41
19.15	42
18.4	43	== 2.1 For Firmware Version lower than lgw~-~-build-v5.4.1616478814-20210323-1355 ==
1.2	44
18.4	45	=== 2.1.1 End User Guide to use SSH access ===
	46
1.2	47	Go to this the Reverse SSH page as below:
	48
3.2	49	[[image:image-20220527102348-1.png]]
1.2	50
	51	Get the RSSH configure page
	52
	53
4.2	54	[[image:image-20220527103251-2.png]]
1.2	55
	56	Connection OK.
	57
4.3	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
1.2	63
2.2	64	(((
1.2	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.
2.2	66	)))
1.2	67
	68
18.5	69	=== 2.1.2 How to Ser up a Reverse SSH access ===
1.2	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.
4.3	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.
1.2	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
2.5	79	(% class="box" %)
	80	(((
2.10	81	$ ssh -p <End User Host Port> root@<Host Address>
2.5	82	)))
1.2	83
2.5	84	(((
4.4	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.
2.5	86	)))
1.2	87
2.3	88
18.5	89	==== 2.1.2.1 Note for set up RSSH server ====
1.2	90
2.9	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.
1.2	92
2.4	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	)))
1.2	102
2.11	103
18.5	104	== 2.2 For Firmware Version higher than lgw~-~-build-v5.4.1618196981-20210412-1111 ==
1.2	105
	106	Below gateway support reverse SSH access:
	107
2.5	108	(% class="box" %)
	109	(((
2.11	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
2.5	116	)))
1.2	117
2.11	118
18.5	119	=== 2.2.1 End User Guide to use SSH access ===
1.2	120
18.5	121	==== 2.2.1.1 Install the SSH service for server ====
1.2	122
19.4	123	===== 2.2.1.1.1 Step 1 : Download the SSH service code =====
1.2	124
	125	1).git clone [[https:~~/~~/github.com/dragino/rssh-server.git>>url:https://github.com/dragino/rssh-server.git]] rssh-server
	126
6.2	127	[[image:image-20220527105447-1.png]]
1.2	128
	129	git clone rssh-server
	130
2.5	131
1.2	132	2).cd rssh-server; sudo make ~-~--> to Generate the execute file：rssh_serv
	133
6.2	134	[[image:image-20220527105511-2.png]]
1.2	135
	136	Generate the execute file
	137
6.2	138
1.2	139	Debug :
	140
2.5	141	(% class="box" %)
	142	(((
6.3	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.
2.5	145	)))
1.2	146
2.5	147	(% class="box" %)
	148	(((
6.3	149	if you make error 127,it (% style="color:#4f81bd" %)lack of gcc.(%%)
	150	please install gcc. ~-~->(% style="color:#4f81bd" %)yum install gcc.
2.5	151	)))
1.2	152
8.2	153	[[image:image-20220527105856-3.png]]
1.2	154
	155	lack of gcc
	156
2.5	157	(% class="box" %)
	158	(((
6.3	159	if you make a fatal error : sqlite3.h,it (% style="color:#4f81bd" %)lack of sqlite3.(%%)
	160	please insatell (% style="color:#4f81bd" %)sqlite3.
2.5	161	)))
1.2	162
8.2	163	[[image:image-20220527105918-4.png]]
1.2	164
	165	lack of sqlite3
	166
8.2	167
1.2	168	How to install Sqlit3
	169
2.5	170	(% class="box" %)
	171	(((
2.12	172	Step1: Download the SQLit3 installation package
2.5	173	sudo wget [[https:~~/~~/www.sqlite.org/2021/sqlite-autoconf-3350400.tar.gz>>url:https://www.sqlite.org/2021/sqlite-autoconf-3350400.tar.gz]]
2.12	174	Step2: tar the SQLit3 installation package
1.2	175	sudo tar -zxvf sqlite-autoconf-3350300.tar.gz
2.12	176	Step3: Generate the makefile
1.2	177	cd sqlite-autoconf-3350300/;./configure
2.12	178	Step4: Compile makefile
1.2	179	sudo make
2.12	180	Step5: Install makefile
1.2	181	sudo make install
2.5	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:
1.2	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.
2.5	189	)))
1.2	190
2.5	191
19.4	192	===== 2.2.1.1.2 Step 2 : Install and run the RSS service =====
1.2	193
12.2	194	1): intall database for /var/rsshdb.sqlite3 and Server development port for 3721(The default is 3721)
1.2	195
	196	user must enter the root account and run the following commands
	197
2.5	198	(% class="box" %)
	199	(((
2.13	200	$ ./create_sqlite3_db.sh
	201	$ ./rssh_serv -p 3721 2>&1 &
	202	$ ps -ef \| grep rssh_serv check 3721 port
2.5	203	)))
1.2	204
10.2	205	[[image:image-20220527110436-6.png]]
1.2	206
	207	intall database and server development port
	208
	209	Debug:
	210
2.5	211	(% class="box" %)
	212	(((
9.2	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
2.5	215	)))
1.2	216
2.5	217	(% class="box" %)
	218	(((
2.15	219	if fail to open dpvlry or to bind to it
9.2	220	please kill rssh_serv,and run (% style="color:#4f81bd" %) ./rssh_serv -p 3721 2>&1 & (%%) again
2.5	221	)))
1.2	222
2.5	223
19.5	224	===== 2.2.1.1.3 Step 3 : Create a minimal SSH user (reverse SSH proxy for the gateway) =====
1.2	225
9.2	226	1): (% style="color:#4f81bd" %)sudo useradd XXXXX(%%) (custom user name)
1.2	227
9.2	228	2): (% style="color:#4f81bd" %)sudo passwd xxxxxx
1.2	229
9.2	230	3): (% style="color:#4f81bd" %)cp /bin/bash /bin/rbash
1.2	231
9.2	232	4): (% style="color:#4f81bd" %)sudo nano /etc/passwd(%%) ~-~-> Change /bin/bash to /bin/rbash
1.2	233
9.2	234	5): (% style="color:#4f81bd" %)sudo nano /home/xxxxx/.bashrc(%%) empty it,and input export PATH=$HOME/bin
1.2	235
9.2	236	6): (% style="color:#4f81bd" %)sudo nano /home/xxxxx/.bash_profile(%%) empty it,and input export PATH=$HOME/bin
1.2	237
	238	Now user "XXXXX" is the user with limited permissions of the current system
	239
2.5	240
18.5	241	=== 2.2.2 How does user get the gateway to connect to a user's private server ===
1.2	242
19.6	243	===== 2.2.2.1 Step 1 : Come bace the gateway web UI for get the gateway Public key =====
1.2	244
19.14	245	1) in the system ~-~-> (% style="color:#4f81bd" %)Remote Mgmt
1.2	246
12.2	247	[[image:image-20220527110531-7.png]]
1.2	248
	249	Remote Mgmt
	250
2.6	251
19.7	252	===== 2.2.2.2 Step 2 : Authorization server =====
1.2	253
	254	copy the Gateway Publickey into user's private server "/home/XXXXX/.ssh/authorized_keys" file.
	255
12.2	256	[[image:image-20220527110625-8.png]]
1.2	257
	258	Publickey
	259
2.6	260
19.8	261	===== 2.2.2.3 Step 3 : connecte private server =====
1.2	262
	263	in the gateway web UI
	264
13.2	265	[[image:image-20220527110700-9.png]]
1.2	266
	267	gateway web UI
	268
2.6	269	(% class="box" %)
	270	(((
13.3	271	(% style="color:#4f81bd" %)Connection Type (%%) : If user's least privileged user with private server uses a password, select (% style="color:#4f81bd" %)Public Key(%%)
2.6	272	Note:if user's least privileged user no uses a password,choose from both is fine
13.3	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.
1.2	276	Click Save and then Connect
2.6	277	)))
1.2	278
2.7	279
19.9	280	===== 2.2.2.4 Step 4 : Cheak is fine =====
1.2	281
	282	Rssh Host connection Ok
	283
15.2	284	[[image:image-20220527111009-10.png]]
1.2	285
	286	Rssh Host connection Ok
	287
2.7	288
1.2	289	user can use common ps \| grep ssh to check it in the gateway.
	290
15.2	291	[[image:image-20220527111041-11.png]]
1.2	292
	293	Check the gateway
	294
	295
19.10	296	===== 2.2.2.5 Step 5 : Create an authorization key file =====
1.2	297
	298	1):sudo mkdir /home/xxxxx/.ssh; sudo touch /home/xxxxx/.ssh/authorizedkey
	299
	300	Debug:
	301
2.7	302	(% class="box" %)
	303	(((
	304	check: sudo ls /home/xxxxx/.ssh/authorizedkey
	305	)))
1.2	306
	307
17.2	308	=== 2.2.3 How to Ser up a Reverse SSH access ===
1.2	309
19.11	310	==== 2.2.3.1 Step 1 : Log into the server system ====
1.2	311
17.2	312	[[image:image-20220527111145-12.png]]
	313
1.2	314	Loging server
	315
2.8	316
19.12	317	==== 2.2.3.2 Step 2 : access the gateway ====
1.2	318
18.2	319	(% class="box" %)
	320	(((
1.2	321	$ cd rssh-server/
18.2	322	)))
1.2	323
	324	Check the gateway linking to the server $ ./connect-gw.sh -l
	325
17.2	326	[[image:image-20220527111219-13.png]]
1.2	327
	328	Check the gateway linking to the server
	329
	330
	331	access the gateway $ ./connect-gw.sh <GWID>
	332
18.2	333	[[image:image-20220527111300-14.png]]
1.2	334
	335	reverse ssh access the gateway

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