Module is enabled, double checked:
tecnetadmin@ubuntu-elk:~$ sudo filebeat modules list
[sudo] password for tecnetadmin:
Enabled:
netflow
system
tecnetadmin@ubuntu-elk:~$ ls -altr /etc/filebeat/modules.d/netflow.yml
-rw-r--r-- 1 root root 212 Aug 30 16:22 /etc/filebeat/modules.d/netflow.yml
Mi netflow.yml:
tecnetadmin@ubuntu-elk:~$ cat /etc/filebeat/modules.d/netflow.yml
# Module: netflow
# Docs: https://www.elastic.co/guide/en/beats/filebeat/7.9/filebeat-module-netflow.html
- module: netflow
log:
enabled: true
var:
netflow_host: 0.0.0.0
netflow_port: 2055
my filebeat.yml:
sudo cat /etc/filebeat/filebeat.yml
###################### Filebeat Configuration Example #########################
# This file is an example configuration file highlighting only the most common
# options. The filebeat.reference.yml file from the same directory contains all the
# supported options with more comments. You can use it as a reference.
#
# You can find the full configuration reference here:
# https://www.elastic.co/guide/en/beats/filebeat/index.html
# For more available modules and options, please see the filebeat.reference.yml sample
# configuration file.
# ============================== Filebeat inputs ===============================
filebeat.inputs:
- type: netflow
max_message_size: 10KiB
host: "0.0.0.0:2055"
protocols: [ v5, v9, ipfix ]
expiration_timeout: 30m
queue_size: 8192
detect_sequence_reset: true
# Each - is an input. Most options can be set at the input level, so
# you can use different inputs for various configurations.
# Below are the input specific configurations.
- type: log
# Change to true to enable this input configuration.
enabled: false
# Paths that should be crawled and fetched. Glob based paths.
paths:
- /var/log/*.log
#- c:\programdata\elasticsearch\logs\*
# Exclude lines. A list of regular expressions to match. It drops the lines that are
# matching any regular expression from the list.
#exclude_lines: ['^DBG']
# Include lines. A list of regular expressions to match. It exports the lines that are
# matching any regular expression from the list.
#include_lines: ['^ERR', '^WARN']
# Exclude files. A list of regular expressions to match. Filebeat drops the files that
# are matching any regular expression from the list. By default, no files are dropped.
#exclude_files: ['.gz$']
# Optional additional fields. These fields can be freely picked
# to add additional information to the crawled log files for filtering
#fields:
# level: debug
# review: 1
### Multiline options
# Multiline can be used for log messages spanning multiple lines. This is common
# for Java Stack Traces or C-Line Continuation
# The regexp Pattern that has to be matched. The example pattern matches all lines starting with [
#multiline.pattern: ^\[
# Defines if the pattern set under pattern should be negated or not. Default is false.
#multiline.negate: false
# Match can be set to "after" or "before". It is used to define if lines should be append to a pattern
# that was (not) matched before or after or as long as a pattern is not matched based on negate.
# Note: After is the equivalent to previous and before is the equivalent to to next in Logstash
#multiline.match: after
# ============================== Filebeat modules ==============================
filebeat.config.modules:
# Glob pattern for configuration loading
path: ${path.config}/modules.d/*.yml
# Set to true to enable config reloading
reload.enabled: false
# Period on which files under path should be checked for changes
#reload.period: 10s
# ======================= Elasticsearch template setting =======================
setup.template.settings:
index.number_of_shards: 1
#index.codec: best_compression
#_source.enabled: false
# ================================== General ===================================
# The name of the shipper that publishes the network data. It can be used to group
# all the transactions sent by a single shipper in the web interface.
#name:
# The tags of the shipper are included in their own field with each
# transaction published.
#tags: ["service-X", "web-tier"]
# Optional fields that you can specify to add additional information to the
# output.
#fields:
# env: staging
# ================================= Dashboards =================================
# These settings control loading the sample dashboards to the Kibana index. Loading
# the dashboards is disabled by default and can be enabled either by setting the
# options here or by using the `setup` command.
#setup.dashboards.enabled: false
# The URL from where to download the dashboards archive. By default this URL
# has a value which is computed based on the Beat name and version. For released
# versions, this URL points to the dashboard archive on the artifacts.elastic.co
# website.
#setup.dashboards.url:
# =================================== Kibana ===================================
# Starting with Beats version 6.0.0, the dashboards are loaded via the Kibana API.
# This requires a Kibana endpoint configuration.
setup.kibana:
# Kibana Host
# Scheme and port can be left out and will be set to the default (http and 5601)
# In case you specify and additional path, the scheme is required: http://localhost:5601/path
# IPv6 addresses should always be defined as: https://[2001:db8::1]:5601
host: "0.0.0.0:5601"
# Kibana Space ID
# ID of the Kibana Space into which the dashboards should be loaded. By default,
# the Default Space will be used.
#space.id:
# =============================== Elastic Cloud ================================
# These settings simplify using Filebeat with the Elastic Cloud (https://cloud.elastic.co/).
# The cloud.id setting overwrites the `output.elasticsearch.hosts` and
# `setup.kibana.host` options.
# You can find the `cloud.id` in the Elastic Cloud web UI.
#cloud.id:
# The cloud.auth setting overwrites the `output.elasticsearch.username` and
# `output.elasticsearch.password` settings. The format is `<user>:<pass>`.
#cloud.auth:
# ================================== Outputs ===================================
# Configure what output to use when sending the data collected by the beat.
# ---------------------------- Elasticsearch Output ----------------------------
output.elasticsearch:
# Array of hosts to connect to.
hosts: ["0.0.0.0:9200"]
# Protocol - either `http` (default) or `https`.
#protocol: "https"
# Authentication credentials - either API key or username/password.
#api_key: "id:api_key"
#username: "elastic"
#password: "changeme"
# ------------------------------ Logstash Output -------------------------------
#output.logstash:
# The Logstash hosts
#hosts: ["localhost:5044"]
# Optional SSL. By default is off.
# List of root certificates for HTTPS server verifications
#ssl.certificate_authorities: ["/etc/pki/root/ca.pem"]
# Certificate for SSL client authentication
#ssl.certificate: "/etc/pki/client/cert.pem"
# Client Certificate Key
#ssl.key: "/etc/pki/client/cert.key"
# ================================= Processors =================================
processors:
- add_host_metadata:
when.not.contains.tags: forwarded
- add_cloud_metadata: ~
- add_docker_metadata: ~
- add_kubernetes_metadata: ~
# ================================== Logging ===================================
# Sets log level. The default log level is info.
# Available log levels are: error, warning, info, debug
#logging.level: debug
# At debug level, you can selectively enable logging only for some components.
# To enable all selectors use ["*"]. Examples of other selectors are "beat",
# "publish", "service".
#logging.selectors: ["*"]
# ============================= X-Pack Monitoring ==============================
# Filebeat can export internal metrics to a central Elasticsearch monitoring
# cluster. This requires xpack monitoring to be enabled in Elasticsearch. The
# reporting is disabled by default.
# Set to true to enable the monitoring reporter.
#monitoring.enabled: false
# Sets the UUID of the Elasticsearch cluster under which monitoring data for this
# Filebeat instance will appear in the Stack Monitoring UI. If output.elasticsearch
# is enabled, the UUID is derived from the Elasticsearch cluster referenced by output.elasticsearch.
#monitoring.cluster_uuid:
# Uncomment to send the metrics to Elasticsearch. Most settings from the
# Elasticsearch output are accepted here as well.
# Note that the settings should point to your Elasticsearch *monitoring* cluster.
# Any setting that is not set is automatically inherited from the Elasticsearch
# output configuration, so if you have the Elasticsearch output configured such
# that it is pointing to your Elasticsearch monitoring cluster, you can simply
# uncomment the following line.
#monitoring.elasticsearch:
# ============================== Instrumentation ===============================
# Instrumentation support for the filebeat.
#instrumentation:
# Set to true to enable instrumentation of filebeat.
#enabled: false
# Environment in which filebeat is running on (eg: staging, production, etc.)
#environment: ""
# APM Server hosts to report instrumentation results to.
#hosts:
# - http://localhost:8200
# API Key for the APM Server(s).
# If api_key is set then secret_token will be ignored.
#api_key:
# Secret token for the APM Server(s).
#secret_token:
# ================================= Migration ==================================
# This allows to enable 6.7 migration aliases
#migration.6_to_7.enabled: true
Finally:
Regarding, filter returns:
**event.dataset : netflow** doesn't match any options
I can also verified 3 more things:
Service is listening at port 2055 , packet from my exporter are coming to server , and firewall is disabled:
sudo netstat -tulpn | grep 2055
udp6 0 0 :::2055 :::* 8473/filebeat
tecnetadmin@ubuntu-elk:~$
tecnetadmin@ubuntu-elk:~$ sudo tcpdump -i any port 2055 -qnvv
tcpdump: listening on any, link-type LINUX_SLL (Linux cooked v1), capture size 262144 bytes
23:51:32.440924 IP (tos 0x0, ttl 255, id 40995, offset 0, flags [none], proto UDP (17), length 1476)
172.30.6.1.2055 > 172.30.6.113.2055: [no cksum] UDP, length 1448
23:51:32.440991 IP (tos 0x0, ttl 255, id 40996, offset 0, flags [none], proto UDP (17), length 1476)
172.30.6.1.2055 > 172.30.6.113.2055: [no cksum] UDP, length 1448
23:51:32.440997 IP (tos 0x0, ttl 255, id 40997, offset 0, flags [none], proto UDP (17), length 1476)
172.30.6.1.2055 > 172.30.6.113.2055: [no cksum] UDP, length 1448
23:51:32.441001 IP (tos 0x0, ttl 255, id 40998, offset 0, flags [none], proto UDP (17), length 1476)
172.30.6.1.2055 > 172.30.6.113.2055: [no cksum] UDP, length 1448
23:51:32.441005 IP (tos 0x0, ttl 255, id 40999, offset 0, flags [none], proto UDP (17), length 1476)
172.30.6.1.2055 > 172.30.6.113.2055: [no cksum] UDP, length 1448
23:51:32.441010 IP (tos 0x0, ttl 255, id 41000, offset 0, flags [none], proto UDP (17), length 1476)
172.30.6.1.2055 > 172.30.6.113.2055: [no cksum] UDP, length 1448
23:51:32.441014 IP (tos 0x0, ttl 255, id 41001, offset 0, flags [none], proto UDP (17), length 1476)
172.30.6.1.2055 > 172.30.6.113.2055: [no cksum] UDP, length 1448
23:51:32.441017 IP (tos 0x0, ttl 255, id 41002, offset 0, flags [none], proto UDP (17), length 1476)
172.30.6.1.2055 > 172.30.6.113.2055: [no cksum] UDP, length 1448
^C
8 packets captured
15 packets received by filter
7 packets dropped by kernel
tecnetadmin@ubuntu-elk:~$ sudo ufw status
Status: inactive
Thanks for your help.
Again.
Leo.
