RPM package creation for BRO IDS Deployments.

RPM package creation for BRO IDS Deployments. Basically, there are two ways to install BRO. One is, download the source and compile it for your machine. The other option is to install BRO from a package. Compiling from source is a great option, which allows for customization but can become problematic when deploying BRO on […]

BRO and Fortinet Content Packs on Graylog Marketplace

Content Packs for Graylog Lately, I have been working with Graylog a lot so I decided to update a few items on github and update their entries on the Graylog marketplace website. BRO content pack for Graylog The BRO IDS content pack contains pipeline rules, a stream, a dashboard displaying interesting activity, and a syslog […]

Configure a default zone with firewalld

This is not meant as a full primer for firewalld. It is just meant to document changing the default zone. If you are looking for a more in-depth exposure to firewalld try https://www.hogarthuk.com/?q=node/9 Check available zones firewall-cmd --get-zones Check active zone firewall-cmd --get-active-zones Get current zone of interface (assumes it is in the public zone) […]

Send Security Onion logs to a centralized Graylog Server

Overview For anyone that doesn’t know, Security Onion is a custom Linux distribution running on Ubuntu that can be used as a Network Intrusion Detection System (NIDS). Security Onion integrates several configurable apps like BRO IDS, Snort, Suricata, and OSSEC to name a few. By default, there is an integrated ELSA Stack that can be […]

Setting up a multi-tiered log infrastructure Part 11 -- Cluster Tuning

This is post 11 of 11 in the series “Setting up a multi-tiered log infrastructure” Tuning Graylog, Elasticsearch, and MongoDB for optimized cluster performance This has been an article a long time in the making. One problem with making changes to a complex clustered environment is that you may have to wait long periods of […]

Setting up a multi-tiered log infrastructure Part 10 -- HA Cluster Setup

This is post 10 of 11 in the series “Setting up a multi-tiered log infrastructure” Setup HA Cluster Services on CentOS 7 Install HA Cluster components Install pacemaker and the cluster control software on both nodes that will be part of the cluster(corosync is pulled in as a dependency) yum install pacemaker pcs Enable and […]

Setting up a multi-tiered log infrastructure Part 9 -- Rsyslog HA Setup

This is post 9 of 11 in the series “Setting up a multi-tiered log infrastructure” Setup rsyslog aggregator nodes (Optional) Setup Note:  As part of the overall design, an HA cluster allows aggregating logs to the Central Log Repository with as little loss of logs as possible due to downtime or maintenance. Below are steps […]

Setting up a multi-tiered log infrastructure Part 8 -- Rsyslog Setup

This is post 8 of 11 in the series “Setting up a multi-tiered log infrastructure” Setup rsyslog node Setup Note: there are two possible build options. Option 1 is to build a single server that will handle log reception and storage. This is perfectly acceptable if losing a few logs during maintenance is okay. Option […]

Setting up a multi-tiered log infrastructure Part 7 -- Graylog WebUI Setup

This is post 7 of 11 in the series “Setting up a multi-tiered log infrastructure” Additional Setup for master node Setup Graylog Web UI on master node Setup Note: newer versions of graylog do not require a separate install for the web interface anymore so we can make a few firewall rule changes and be […]

Setting up a multi-tiered log infrastructure Part 6 -- Graylog Setup

This is post 6 of 11 in the series “Setting up a multi-tiered log infrastructure” Additional setup for master node Setup graylog-server on master node Install instructions from http://docs.graylog.org/en/2.2/pages/installation.html Setup Note: This deployment is not using a prebuilt rpm package, many of the next steps will be moving files, creating directories, creating additional files, and […]

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