# How to get SNMP packets to my node-red docker image?
**URL:** https://discourse.nodered.org/t/how-to-get-snmp-packets-to-my-node-red-docker-image/78561
**Category:** General
**Tags:** docker
**Created:** [20 May 2023 17:08 UTC](https://discourse.nodered.org/t/how-to-get-snmp-packets-to-my-node-red-docker-image/78561 "2023-05-20T17:08:19Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@AndKe](https://discourse.nodered.org/u/AndKe)
#### Post date: [20 May 2023 17:08 UTC](https://discourse.nodered.org/t/how-to-get-snmp-packets-to-my-node-red-docker-image/78561/1 "2023-05-20T17:08:19Z")
A UPS is sending traps to the host of the node-red (in a docker).
I have installed [node-red-node-snmp (node) - Node-RED](https://flows.nodered.org/node/node-red-node-snmp)
-how can I get the SNMP packets to the docker image?
my iptables config:
```auto
$ sudo iptables -L
# Warning: iptables-legacy tables present, use iptables-legacy to see them
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT udp -- anywhere anywhere udp dpt:snmp-trap
Chain FORWARD (policy DROP)
target prot opt source destination
DOCKER-USER all -- anywhere anywhere
DOCKER-ISOLATION-STAGE-1 all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain DOCKER (3 references)
target prot opt source destination
ACCEPT tcp -- anywhere 172.17.0.2 tcp dpt:1880
ACCEPT tcp -- anywhere 172.18.0.2 tcp dpt:9001
ACCEPT tcp -- anywhere 172.18.0.2 tcp dpt:1883
ACCEPT tcp -- anywhere 172.18.0.3 tcp dpt:http-alt
Chain DOCKER-ISOLATION-STAGE-1 (1 references)
target prot opt source destination
DOCKER-ISOLATION-STAGE-2 all -- anywhere anywhere
DOCKER-ISOLATION-STAGE-2 all -- anywhere anywhere
DOCKER-ISOLATION-STAGE-2 all -- anywhere anywhere
RETURN all -- anywhere anywhere
Chain DOCKER-ISOLATION-STAGE-2 (3 references)
target prot opt source destination
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
RETURN all -- anywhere anywhere
Chain DOCKER-USER (1 references)
target prot opt source destination
RETURN all -- anywhere anywhere
pi@lys:~ $
```
---
### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [20 May 2023 17:24 UTC](https://discourse.nodered.org/t/how-to-get-snmp-packets-to-my-node-red-docker-image/78561/2 "2023-05-20T17:24:04Z")
> [@AndKe](#):
>
> SNMP
You need to open UDP ports 161 and 162 to your Docker container first.
```auto
-p 161:161/udp
-p 162:162/udp
```
---
### Author:  [@AndKe](https://discourse.nodered.org/u/AndKe)
#### Post date: [20 May 2023 17:31 UTC](https://discourse.nodered.org/t/how-to-get-snmp-packets-to-my-node-red-docker-image/78561/3 "2023-05-20T17:31:36Z")
@TotallyInformation thanks - this reminds me of the last time I needed to find out how/where my docker was configured.
now I need to figure it out again.
---
### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [20 May 2023 18:30 UTC](https://discourse.nodered.org/t/how-to-get-snmp-packets-to-my-node-red-docker-image/78561/4 "2023-05-20T18:30:20Z")
If you use docker compose, you can configure docker containers using simple config files which you can annotate, you might find that easier.
---
### Author:  [@AndKe](https://discourse.nodered.org/u/AndKe)
#### Post date: [20 May 2023 19:21 UTC](https://discourse.nodered.org/t/how-to-get-snmp-packets-to-my-node-red-docker-image/78561/5 "2023-05-20T19:21:53Z")
@TotallyInformation Yes, I am using this for some services,
```auto
$ cat docker-compose.yml
version: '3.8'
services:
mqtt:
container_name: mqtt
image: eclipse-mosquitto:2.0
restart: unless-stopped
volumes:
- "/home/pi/mosquitto-data:/mosquitto"
ports:
- "1883:1883"
- "9001:9001"
command: "mosquitto -c /mosquitto-no-auth.conf"
zigbee2mqtt:
depends_on:
- mqtt
container_name: zigbee2mqtt
image: koenkk/zigbee2mqtt
restart: unless-stopped
volumes:
#- ./data:/app/data
- /home/pi/zigbee2mqtt-data:/app/data
- /run/udev:/run/udev:ro
ports:
# Frontend port
- 8080:8080
environment:
- TZ=Europe/Berlin
devices:
# Make sure this matched your adapter location
#- /dev/serial/by-id/usb-Texas_Instruments_TI_CC2531_USB_CDC___0X00124B0018ED3DDF-if00:/dev/ttyACM0
- /dev/ttyUSB0:/dev/ttyUSB0
```
but still fail to see where node-red is started:
```auto
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
koenkk/zigbee2mqtt latest 567088e9e6af 4 months ago 82.8MB
koenkk/zigbee2mqtt ab272e315125 4 months ago 82.8MB
koenkk/zigbee2mqtt e6bf13d00050 5 months ago 187MB
nodered/node-red latest 35f3062b67d1 9 months ago 407MB
koenkk/zigbee2mqtt 5e16c0dd46a7 18 months ago 143MB
eclipse-mosquitto 2.0 79117ae3185f 18 months ago 9.91MB
hello-world latest 1ec996c686eb 19 months ago 4.85kB
```
I also see a /var/lib/docker/volumes/node\_red\_data/\_data/node\_modules/node-red-contrib-telegrambot-home/docker-compose.yml
- but cannot be sure whatever this is somehow in use too?
---
### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [20 May 2023 19:33 UTC](https://discourse.nodered.org/t/how-to-get-snmp-packets-to-my-node-red-docker-image/78561/6 "2023-05-20T19:33:09Z")
> [@AndKe](#):
>
> but still fail to see where node-red is started:
It isn't in that compose file. Check other compose files.
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [19 July 2023 19:33 UTC](https://discourse.nodered.org/t/how-to-get-snmp-packets-to-my-node-red-docker-image/78561/7 "2023-07-19T19:33:41Z")
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