cidr
editcidr
editThis is a community-maintained plugin! It does not ship with Logstash by default, but it is easy to install by running bin/logstash-plugin install logstash-filter-cidr
.
The CIDR filter is for checking IP addresses in events against a list of network blocks that might contain it. Multiple addresses can be checked against multiple networks, any match succeeds. Upon success additional tags and/or fields can be added to the event.
Synopsis
editThis plugin supports the following configuration options:
Required configuration options:
cidr { }
Available configuration options:
Setting | Input type | Required | Default value |
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No |
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No |
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No |
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No |
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Details
edit
add_field
edit- Value type is hash
-
Default value is
{}
If this filter is successful, add any arbitrary fields to this event.
Field names can be dynamic and include parts of the event using the %{field}
.
Example:
filter { cidr { add_field => { "foo_%{somefield}" => "Hello world, from %{host}" } } }
# You can also add multiple fields at once: filter { cidr { add_field => { "foo_%{somefield}" => "Hello world, from %{host}" "new_field" => "new_static_value" } } }
If the event has field "somefield" == "hello"
this filter, on success,
would add field foo_hello
if it is present, with the
value above and the %{host}
piece replaced with that value from the
event. The second example would also add a hardcoded field.
add_tag
edit- Value type is array
-
Default value is
[]
If this filter is successful, add arbitrary tags to the event.
Tags can be dynamic and include parts of the event using the %{field}
syntax.
Example:
filter { cidr { add_tag => [ "foo_%{somefield}" ] } }
# You can also add multiple tags at once: filter { cidr { add_tag => [ "foo_%{somefield}", "taggedy_tag"] } }
If the event has field "somefield" == "hello"
this filter, on success,
would add a tag foo_hello
(and the second example would of course add a taggedy_tag
tag).
address
edit- Value type is array
-
Default value is
[]
The IP address(es) to check with. Example:
filter { cidr { add_tag => [ "testnet" ] address => [ "%{src_ip}", "%{dst_ip}" ] network => [ "192.0.2.0/24" ] } }
network
edit- Value type is array
-
Default value is
[]
The IP network(s) to check against. Example:
filter { cidr { add_tag => [ "linklocal" ] address => [ "%{clientip}" ] network => [ "169.254.0.0/16", "fe80::/64" ] } }
periodic_flush
edit- Value type is boolean
-
Default value is
false
Call the filter flush method at regular interval. Optional.
remove_field
edit- Value type is array
-
Default value is
[]
If this filter is successful, remove arbitrary fields from this event. Fields names can be dynamic and include parts of the event using the %{field}
Example:
filter { cidr { remove_field => [ "foo_%{somefield}" ] } }
# You can also remove multiple fields at once: filter { cidr { remove_field => [ "foo_%{somefield}", "my_extraneous_field" ] } }
If the event has field "somefield" == "hello"
this filter, on success,
would remove the field with name foo_hello
if it is present. The second
example would remove an additional, non-dynamic field.
remove_tag
edit- Value type is array
-
Default value is
[]
If this filter is successful, remove arbitrary tags from the event.
Tags can be dynamic and include parts of the event using the %{field}
syntax.
Example:
filter { cidr { remove_tag => [ "foo_%{somefield}" ] } }
# You can also remove multiple tags at once: filter { cidr { remove_tag => [ "foo_%{somefield}", "sad_unwanted_tag"] } }
If the event has field "somefield" == "hello"
this filter, on success,
would remove the tag foo_hello
if it is present. The second example
would remove a sad, unwanted tag as well.