Last modified by Kilight Cao on 2025/03/03 16:11
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1 **~ Table of Contents:**
2
3 {{toc/}}
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8
9 = 1.  Introduction =
10
11
12 This feature is to filter the unwanted LoRaWAN packets. Purpose is to save the upstream traffic especially for a 4G cellular connection. If configured, gateway will process filter for below two types of message:
13
14 * Unconfirmed Data Up
15
16 * Confirmed Data Up
17
18 = (% data-sider-select-id="a6563476-6957-435c-a8e6-64925b496a09" %)2.  LoRaWAN Filter Mechanism(%%) =
19
20
21 (% style="color:blue" %)**Support Devices:**
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23 * All existing models of Gateways
24
25 (% style="color:blue" %)**Support Server Type:**
26
27 * LoRaWAN Semtech UDP & Basic Station
28
29 (% style="color:blue" %)**Filtering rules:**
30
31 (% border="1" style="background-color:#f2f2f2; width:1327.22px" %)
32 |=(% colspan="2" data-sider-select-id="2963d404-f9df-47a3-9421-ad8343c28190" style="width: 326px; background-color: rgb(79, 129, 189); color: white;" %)Fport Filters|=(% colspan="2" data-sider-select-id="b75fb8fe-614b-43de-866c-7df1f0e1351c" style="width: 320px; background-color: rgb(79, 129, 189); color: white;" %)DevAddr Filter|=(% colspan="2" data-sider-select-id="b75fb8fe-614b-43de-866c-7df1f0e1351c" rowspan="1" style="width: 345px; background-color: rgb(79, 129, 189); color: white;" %)(% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)NwkID Filter|=(% colspan="2" data-sider-select-id="b75fb8fe-614b-43de-866c-7df1f0e1351c" rowspan="1" style="width: 336px; background-color: rgb(79, 129, 189); color: white;" %)Dev EUI Filter
33 |(% data-sider-select-id="48ec1aac-dbc7-42b1-b4cf-5efa6cebeb7b" style="width:71px" %)**Level 0**|(% style="width:203px" %)Do nothing|(% data-sider-select-id="93e39a51-390d-40f8-b384-3e2013f30f59" style="width:75px" %)**Level 0**|(% data-sider-select-id="7a32435a-480f-4394-8307-c01a996c309e" style="width:245px" %)Do nothing|(% data-sider-select-id="bbac18ba-6ebe-4919-a75e-006067aa9702" style="width:78px" %)(% data-sider-select-id="a5a992a8-2aba-48cb-b876-6441732df6a5" %)**Level 0**|(% style="width:266px" %)Do nothing|(% data-sider-select-id="bbac18ba-6ebe-4919-a75e-006067aa9702" style="width:83px" %)(% data-sider-select-id="a5a992a8-2aba-48cb-b876-6441732df6a5" %)**Level 0**|(% style="width:256px" %)Do nothing
34 |(% style="width:71px" %)**Level 1**|(% style="width:203px" %)Filter only the Fport in the list|(% style="width:75px" %)**Level 1**|(% data-sider-select-id="97e7e7ae-2f87-4c08-9730-569c9628f9a7" style="width:245px" %)Filter only the DevAddr in the list|(% data-sider-select-id="5a23d47e-2f84-4f36-a62b-d3b2bd094087" style="width:78px" %)(% data-sider-select-id="8dfd7850-dada-4703-bf77-3dc67e3d3e13" %)**Level 1**|(% data-sider-select-id="87522df9-2acc-4194-9b27-61085236248e" style="width:266px" %)Filter only the NwkID in the list|(% data-sider-select-id="87522df9-2acc-4194-9b27-61085236248e" style="width:83px" %)**Level 1**|(% data-sider-select-id="87522df9-2acc-4194-9b27-61085236248e" style="width:256px" %)Filter only the Dev EUI in the list
35 |(% style="width:71px" %)**Level 2**|(% style="width:203px" %)Filter Fport that are not in the database|(% style="width:75px" %)**Level 2**|(% data-sider-select-id="58fb49e7-bec6-4701-8dd9-8c4a3a3138fa" style="width:245px" %)Filter DevAddr that are not in the database|(% data-sider-select-id="41c0816f-cc2a-45ce-a04c-5499e54b8347" style="width:78px" %)(% data-sider-select-id="1d8fbf98-cc3e-430c-824c-fe435a1b7330" %)**Level 2**|(% data-sider-select-id="323e6d5b-9fd3-4ec8-a767-ac5339de7160" style="width:266px" %)Filter NWkID that are not in the database|(% data-sider-select-id="41c0816f-cc2a-45ce-a04c-5499e54b8347" style="width:83px" %)(% data-sider-select-id="1d8fbf98-cc3e-430c-824c-fe435a1b7330" %)**Level 2**|(% data-sider-select-id="323e6d5b-9fd3-4ec8-a767-ac5339de7160" style="width:256px" %)Filter Dev EUI that are not in the database
36
37 (((
38
39
40 (% style="color:blue" %)**LoRaWAN Semtech UDP Page:**
41
42 [[image:image-20250303153917-1.png||height="764" width="1195"]]
43
44
45 (% style="color:blue" %)**Basic Station Page:**
46
47 [[image:image-20250303160903-6.png]]
48
49
50 (% style="color:blue" %)**Check if the filter is running**
51
52 [[image:image-20250303154226-2.png||height="878" width="1068"]]
53
54
55 == 2.1  Filter By Fport ==
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57
58 The Gateway FPort filter will check all the below LoRaWAN messages: Unconfirmed Data Up & Confirmed Data Up.
59
60
61 (% style="color:red" %)**Important Notice:**
62
63 * By default, Fport Filter (% style="color:blue" %)**Level=0**(%%). which means do nothing
64
65 * Fport Filter configured to (% style="color:blue" %)**Level=1**(%%). If the Fport in the list matches the Fport received by the gateway, it will be dropped.
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67 * Fport Filter configured to (% style="color:blue" %)**Level=2**(%%). If the Fport in the list does not match the Fport received by the gateway, it will be dropped.
68
69 (% data-sider-select-id="a52abdcb-0f07-49a7-a84d-dbbdfc7912d8" %)
70 If you want to **forward only a certain Fport**, use level=2 and add the desired fport in the Filter value textbox. **Add Filter Value 0 to forward Join requests**.
71
72 [[image:image-20240517094721-4.png]]
73
74
75 == 2.2  Filter By DevAddr ==
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77
78 The Gateway DevAddr filter will check all the below LoRaWAN messages: Unconfirmed Data Up & Confirmed Data Up.
79
80
81 (% style="color:red" %)**Important Notice:**
82
83 * By default, DevAddr Filter (% style="color:blue" %)**Level=0**(%%). which means do nothing
84
85 * DevAddr Filter configured to (% style="color:blue" %)**Level=1**(%%). If the DevAddr in the list matches the DevAddr received by the gateway, it will be dropped.
86
87 * DevAddr Filter configured to (% style="color:blue" %)**Level=2**(%%). If the DevAddr in the list does not match the DevAddr received by the gateway, it will be dropped.
88
89 (% data-sider-select-id="1c5a3ce7-94da-41b2-b4f5-a83321d225e4" %)
90 In this case, we set DevAddr Filter Level=1 and add the filter (server | DevAddr | 12664787 ), when the gateway receives a Lorawan packet with DevAddr=12664787, it will be dropped.
91
92 [[image:image-20240517095315-5.png||height="373" width="1085"]]
93
94
95 == (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)2.3 Filter By NwkID(%%) ==
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97
98 The Gateway NwkID filter will check all the below LoRaWAN messages: Unconfirmed Data Up & Confirmed Data Up.
99
100 (% style="color:red" %)**Important Notice:**
101
102 * By default, NwkID Filter (% style="color:blue" %)**Level=0**(%%). which means do nothing
103
104 * NwkID Filter configured to (% style="color:blue" %)**Level=1**(%%). If the NwkID in the list matches the NwkID received by the gateway, it will be dropped.
105
106 * NwkID Filter configured to (% style="color:blue" %)**Level=2**(%%). If the NwkID in the list does not match the NwkID received by the gateway, it will be dropped.
107
108 In this case, we set NwkID Filter Level=2 and add the filter (server | NwkID | 13 ), when the gateway receives a packet that is not NwkID=00000013, it will be dropped.
109
110 NwkID is calculated as follows: DevAddr counts shifted right by 25 bits
111
112 For example, Devaddr=01CC1907,NwkID= 01CC1907 >> 25 = 0
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114 Devaddr=260B748A,NwkID= 260B748A >> 25 = 13
115
116 [[image:image-20240517095458-6.png]]
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118
119 (% data-sider-select-id="77834038-9f62-4c79-9e9e-8761b751e708" style="color:red" %)**If user need to set the Secondary LoRaWAN Server Packet Filter, the configuration is similar to that above.**
120
121
122 == (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)2.4 Filter By Dev EUI(%%) ==
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124
125 The Gateway (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)Dev EUI(%%) filter will check all the below LoRaWAN messages: Unconfirmed Data Up & Confirmed Data Up.
126
127 (% style="color:red" %)**Important Notice:**
128
129 * By default, (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)Dev EUI(%%) Filter (% style="color:blue" %)**Level=0**(%%). which means do nothing
130
131 * (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)Dev EUI(%%) Filter configured to (% style="color:blue" %)**Level=1**(%%). If the (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)Dev EUI(%%) in the list matches the (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)Dev EUI(%%) received by the gateway, it will be dropped.
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133 * (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)Dev EUI(%%) Filter configured to (% style="color:blue" %)**Level=2**(%%). If the (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)Dev EUI(%%) in the list does not match the (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)Dev EUI(%%) received by the gateway, it will be dropped.
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135 In this case, we set (% data-sider-select-id="66b78721-94c2-42f2-9700-2d53738af37c" %)Dev EUI(%%) Filter Level=1 and add the filter (server | deveui | 11FF1111FF112255  ), when the gateway receives the join request packet with deveui=11FF1111FF112255, it will be dropped.
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137 [[image:image-20250303155342-4.png]]
138
139
140 == (% data-sider-select-id="94c45e8c-41a9-45df-bd1c-0253901140bb" %)2.5 Add Filter rules via Linux Command.(%%) ==
141
142
143 (% class="box infomessage" %)
144 (((
145 $ sqlite3 /etc/lora/devskey "INSERT INTO filter (name, type, value ) VALUES ('$filter_name', '$filter_type', '$filter_value');"
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147
148
149 name: server name. eg: server1/server2
150
151 type: filter type. eg: fport/devaddr
152
153 value: 0,1,2,3/000000
154 )))
155
156 (% class="box" %)
157 (((
158 eg:
159
160 sqlite3 /etc/lora/devskey "INSERT INTO filter (name, type, value ) VALUES ('server1', 'fport', '1');"
161
162 sqlite3 /etc/lora/devskey "INSERT INTO filter (name, type, value ) VALUES ('server1', 'devaddr', '00000000');"
163
164 sqlite3 /etc/lora/devskey "SELECT *from filter"
165 )))
166
167 [[image:image-20230519104800-2.png||_mstalt="428714"]]
168 )))
169
170
171 (((
172
173
174 = 3.  PKT_FWD Filter Mechanism =
175
176
177 (% style="color:blue" %)**Support Devices:**
178
179 * Firmware Version >** lgw~-~-build-v5.4.1602379434-20201011-0926** [[Firmware Download>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]]
180
181 * LG308, DLOS8
182
183 * LPS8
184
185 (% style="color:blue" %)**Fport & DevAddr Filter**
186
187 [[image:image-20220527150138-1.png||_mstalt="429598"]]
188
189
190 (% style="color:blue" %)**Check if the filter is running**
191
192 [[image:image-20220527150222-2.png||_mstalt="427921" height="379" width="1062"]]
193
194
195 == 3.1  Filter By Fport ==
196
197
198 The Gateway FPort filter will check all the below LoRaWAN message: Unconfirmed Data Up & Confirmed Data Up. If the packet's FPort doesn't match the FPort setting, it will be dropped.
199
200 (((
201 By default , this value is 0 means can upstream all packets with any FPort. We can set to other FPort so specify only one FPort works.
202 )))
203
204 [[image:image-20220527150303-3.png||_mstalt="428285"]]
205
206
207 In case we set the FPort filter to 45, and the End Node send a packet with Fport other than 45, it will be dropped.
208
209
210 == 3.2  Filter By DevAddr ==
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212
213 Gateway will use a DevAddr mask to check if the Unconfirmed Data Up & Confirmed Data Up packets match the mask . If not, gateway will drop it.
214
215 [[image:image-20220527150404-4.png||_mstalt="429299"]]
216
217
218 This screenshot shows packets is dropped if DevAddr mask doesn't match.
219
220
221 )))

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