audisp-kafka

Linux audit event multiplexor (audisp) plugin for transferring audit event information to Apache Kafka

Getting Started

These instructions will get you a copy of the project up and running on your linux box.

Prerequisites

Before using audisp-kafka please check that required audit packages and Java8+ are installed with

yum list audit audit-libs audispd-plugins
echo "Checking Java version"
java -version

Installing

Build with

mvn install

Then run as root supplied install.sh or run commands below

AUDISP_HOME=/opt/a2/agents/audisp

mkdir -p $AUDISP_HOME/lib
cp target/lib/commons-io-2.6.jar $AUDISP_HOME/lib
cp target/lib/kafka-clients-1.1.0.jar $AUDISP_HOME/lib
cp target/lib/log4j-1.2.17.jar $AUDISP_HOME/lib
cp target/lib/lz4-java-1.4.jar $AUDISP_HOME/lib
cp target/lib/slf4j-api-1.7.25.jar $AUDISP_HOME/lib
cp target/lib/snappy-java-1.1.7.1.jar $AUDISP_HOME/lib

cp target/audisp-kafka-0.1.0.jar $AUDISP_HOME
cp audisp-kafka $AUDISP_HOME
cp audisp-kafka.conf $AUDISP_HOME
cp log4j.properties $AUDISP_HOME

chmod +x $AUDISP_HOME/audisp-kafka

Edit /etc/audisp/plugins.d/au-remote.conf, this files should looks like

active = yes
direction = out
path = /opt/a2/agents/audisp/audisp-kafka
type = always
format = string

Create Kafka's server topic for audit test with a single partition and only one replica:

bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic audisp-test

Edit audisp-kafka.conf, this files should looks like

a2.worker.count = 32
a2.kafka.servers = dwh.a2-solutions.eu:9092
a2.kafka.topic = audisp-test
a2.kafka.client.id = a2.audit.ai.linux

a2.worker.count - number of threads for transferring messaged to Kafka cluster a2.kafka.servers - hostname/IP address and port of Kafka installation a2.kafka.topic - value must match name of Kafka topic created on previous step a2.kafka.client.id - use any valid string value for identifying this Kafka producer

Running

Add some rules to /etc/audit/auditd.rules, for example to audit all command issued by root (i.e. EXECVE call) add

-a always,exit -F arch=b64 -S execve -F euid=0 -F key=root-commands
-a always,exit -F arch=b32 -S execve -F euid=0 -F key=root-commands

to audit other users activity add the same rules with different euid For auditing file system activity you can add for directory /data/oracle/adump

-w /data/oracle/adump -k rdbms-audit-file-watch

For other examples please see man pages, unistd.h and other relevant information sources. Restart auditd with

service auditd restart

See Linux audit log at Kafka's side with command line consumer

bin/kafka-console-consumer.sh --from-beginning --zookeeper localhost:2181 --topic audisp-test

Deployment

Please size Kafka's settings for production environment

Built With

• Maven - Dependency Management

TODO

Kerberos/SSL support

Authors

• Aleksej Veremeev - Initial work - A2 Solutions

License

This project is licensed under the Apache License - see the LICENSE file for details