Fluentd¶
Fluentd, çok yönlü ve hafif bir veri toplayıcı ve taşıma mekanizması olarak hizmet veren açık kaynaklı bir veri toplama yazılım aracıdır. Wallarm Console içinde uygun bir entegrasyon oluşturarak Wallarm’ın tespit edilen olay bildirimlerini Fluentd’ye göndermesini yapılandırabilirsiniz.
Bildirim formatı¶
Wallarm, Fluentd’ye JSON formatında webhook’lar üzerinden bildirimler gönderir. JSON nesnelerinin kümesi, Wallarm’ın bildirdiği olaya bağlıdır.
Yeni hit tespiti bildirimine örnek:
[
{
"summary": "[Wallarm] New hit detected",
"details": {
"client_name": "TestCompany",
"cloud": "EU",
"notification_type": "new_hits",
"hit": {
"domain": "www.example.com",
"heur_distance": 0.01111,
"method": "POST",
"parameter": "SOME_value",
"path": "/news/some_path",
"payloads": [
"say ni"
],
"point": [
"post"
],
"probability": 0.01,
"remote_country": "PL",
"remote_port": 0,
"remote_addr4": "8.8.8.8",
"remote_addr6": "",
"tor": "none",
"request_time": 1603834606,
"create_time": 1603834608,
"response_len": 14,
"response_status": 200,
"response_time": 5,
"stamps": [
1111
],
"regex": [],
"stamps_hash": -22222,
"regex_hash": -33333,
"type": "sqli",
"block_status": "monitored",
"id": [
"hits_production_999_202010_v_1",
"c2dd33831a13be0d_AC9"
],
"object_type": "hit",
"anomaly": 0
}
}
}
]
Gereksinimler¶
Fluentd yapılandırması aşağıdaki gereksinimleri karşılamalıdır:
-
POST veya PUT isteklerini kabul etmelidir
-
HTTPS isteklerini kabul etmelidir
-
Genel erişilebilir bir URL’ye sahip olmalıdır
Fluentd yapılandırma örneği:
Daha fazla ayrıntıyı resmi Fluentd belgelerinde bulabilirsiniz.
Entegrasyonu yapılandırma¶
-
Wallarm Console → Integrations → Fluentd içinde Fluentd entegrasyonu kurulumuna gidin.
-
Entegrasyon adını girin.
-
Hedef Fluentd URL’sini belirtin (Webhook URL).
-
Gerektiğinde gelişmiş ayarları yapılandırın:
- Request method:
POST
orPUT
. By default, POST requests are sent. - Request header and its value if the server requires a non-standard header to execute the request. The number of headers is not limited.
- CA certificate: certificate of CA that signed a server certificate. If CA is publicly trusted, this field is optional. If a server certificate is self-signed, this field is required and must contain a certificate of your own CA that signed a server certificate.
- Verify TLS certificate: this setting allows to disable verification of the specified server certificate. By default, Wallarm verifies whether a server certificate is signed by a publicly trusted CA. We do not recommend disabling the verification of production server certificates. If your server uses a self-signed TLS certificate, you can add a self-signed CA certificate to allow sending requests to this server.
- Request timeout, in seconds: if the server does not respond to the request within the specified time, the request fails. By default: 15 seconds.
- Connection timeout, in seconds: if the connection to the server cannot be established during the specified time, the request fails. By default: 20 seconds.
- Wallarm data format: either a JSON Array (default) or a New Line Delimited JSON (NDJSON).
- Request method:
-
Bildirimleri tetikleyecek olay türlerini seçin.
Kullanılabilir olayların ayrıntıları:
-
Hits detected except for:
- Experimental hits detected based on the custom regular expression. Non-experimental hits trigger notifications.
- Hits not saved in the sample.
-
System related:
- User changes (newly created, deleted, role change)
- Integration changes (disabled, deleted)
- Application changes (newly created, deleted, name change)
- Errors during regular update of specifications used for rogue API detection or API specification enforcement
- Vulnerabilities detected, all by default or only for the selected risk level(s) - high, medium or low.
- Rules and triggers changed (creating, updating, or deleting the rule or trigger)
- (Requires AASM Enterprise) Security issues detected, all or only for the selected risk level(s):
- Critical risk
- High risk
- Medium risk
- Low risk
- Info risk
- On an hourly basis, you can get a notification with the number of requests processed during the previous hour
-
-
Yapılandırmanın doğruluğunu, Wallarm Cloud erişilebilirliğini ve bildirim formatını kontrol etmek için Test integration’a tıklayın.
Test Fluentd günlüğü:
[ { summary:"[Test message] [Test partner(US)] New vulnerability detected", description:"Notification type: vuln New vulnerability was detected in your system. ID: Title: Test Domain: example.com Path: Method: Discovered by: Parameter: Type: Info Threat: Medium More details: https://us1.my.wallarm.com/object/555 Client: TestCompany Cloud: US ", details:{ client_name:"TestCompany", cloud:"US", notification_type:"vuln", vuln_link:"https://us1.my.wallarm.com/object/555", vuln:{ domain:"example.com", id:null, method:null, parameter:null, path:null, title:"Test", discovered_by:null, threat:"Medium", type:"Info" } } } ]
-
Add integration’a tıklayın.
Wallarm Cloud IP addresses
To provide Wallarm Cloud access to your system, you may need a list of its public IP addresses:
Ek uyarıları yapılandırma¶
Besides the notifications you have already set up through the integration card, Wallarm triggers allow you to select additional events for notifications:
-
Number of attacks, hits or incidents per time interval (day, hour, etc.) exceeds the set number
What is not counted
- For attacks:
- The experimental attacks based on the custom regular expressions.
- For hits:
- The experimental hits based on the custom regular expressions.
- Hits not saved in the sample.
- For attacks:
-
Changes in API took place
-
IP address was denylisted
-
New rogue API (shadow, orphan, zombie) was detected
-
New user was added to the company account
For condition detailing, you can add one or more filters. As soon, as condition and filters are set, select the integration through which the selected alert should be sent. You can select several integrations simultaneously.
Fluentd’yi ara veri toplayıcı olarak kullanma¶
The most common logging scheme in complex systems consists of the following components:
-
Data collector: accepts logs from several sources and forwards logs to the SIEM system
-
SIEM system or log management systems: used to analyze logs and monitor the system status
Örneğin:
Bu şemayı kullanarak Wallarm olaylarını kaydetmek için:
-
Gelen webhook’ları okuyup günlükleri bir sonraki sisteme iletecek şekilde veri toplayıcıyı yapılandırın. Wallarm, olayları veri toplayıcılara webhook’lar üzerinden gönderir.
-
SIEM sistemini, veri toplayıcıdan günlükleri alıp okumak üzere yapılandırın.
-
Wallarm’ı günlükleri veri toplayıcıya gönderecek şekilde yapılandırın.
Wallarm, webhook’lar aracılığıyla herhangi bir veri toplayıcıya günlük gönderebilir.
Wallarm’ı Fluentd veya Logstash ile entegre etmek için Wallarm Console UI içindeki ilgili integration cards kullanabilirsiniz.
Wallarm’ı diğer veri toplayıcılarla entegre etmek için Wallarm Console UI içinde webhook integration card kullanabilirsiniz.
Günlükleri SIEM sistemlerine ileten popüler veri toplayıcılarla entegrasyonun nasıl yapılandırılacağına ilişkin bazı örnekleri açıkladık:
-
Wallarm ayrıca Datadog API üzerinden Datadog ile yerel entegrasyonu destekler. Yerel entegrasyon, ara veri toplayıcı kullanımını gerektirmez.
Bir entegrasyonu devre dışı bırakma ve silme¶
You can delete or temporarily disable the integration. While deleting stops sending notificatioins and completely deletes all configuration, disabling just stops sending notifications which you can at any moment re-enable with the same settings.
If for the integration the System related events are selected to trigger notifications, Wallarm will notify about both of these actions.
Sistemin kullanılamaması ve hatalı entegrasyon parametreleri¶
Notifications to the system are sent via requests. If the system is unavailable or integration parameters are configured incorrectly, the error code is returned in the response to the request.
If the system responds to Wallarm request with any code other than 2xx
, Wallarm resends the request with the interval until the 2xx
code is received:
-
The first cycle intervals: 1, 3, 5, 10, 10 seconds
-
The second cycle intervals: 0, 1, 3, 5, 30 seconds
-
The third cycle intervals: 1, 1, 3, 5, 10, 30 minutes
If the percentage of unsuccessful requests reaches 60% in 12 hours, the integration is automatically disabled. If you receive system notifications, you will get a message about automatically disabled integration.