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We can take this a step further and forward our Windows event logs to our Security Onion machine automagically! This can be done with a combination of Sysmon and Winlogbeat. We’re going to install both Sysmon and Winlogbeat on any/all Windows machines on our network that we wish to monitor. This interface will be used to hit the web consoleThe setup will then ask whether or not you’d like a static IP vs one assigned via DHCP. The setup suggests a static IP, this is because that IP will always be reserved for this device instead of DHCP where the IP can change based on how our network is set up. We’ll set this up with a static IP of , a netmask of and a gateway of .
You need to be able to see as much network traffic as possible in order for SO to analyze it. We have been using SO for some time and found it extremely useful in detecting and understanding risks related to surrounding network activities. It has helped us detect malware, miss-configured applications, ad-aware/monitoring activities, vulnerable clients/servers, etc.
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There should be an option to add a standard virtual switch. We give access running the so-allow commandWe see that there are a ton of different options that we can choose from. So we choose that and allow anything on our network to talk to the management interface. My datastore for ISOs and VMsOnce everything uploads we’re ready to create our VM!
I would use a USB for this process, especially if you only have one HDD/SSD installed on the designated computer. For devices like firewalls and routers that don’t support the installation of agents, Security Onion can consume standard Syslog. We see that there are a ton of different options that we can choose from. The setup will then ask whether or not you’d like a static IP vs one assigned via DHCP. Once our switch is created, we need to create a port group.
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Setting up ESXI is a little more daunting to most, but overall a simple process! You may be wondering, “but why can’t I set this up in Workstation Pro and virtualize it that way!? But you won’t be able to properly read traffic from throughout the network. Workstation does not allow you to properly create SPAN ports unfortunately. A workstation install option is also available for SOC analysts to use local Linux tools to perform analysis of network and host events.
My two networks include four PCs with Windows'/Linuxs/FreeBSD, pfSense FW, DD-WRT router, three switches , FreeNAS, three IP cameras, two phones and smart TV. I'm eager to implement Security Onion in my home network for security network monitoring, but having hard time to find suitable hardware. You can also add an IP to hostname mapping at the OS level, this may be useful with etherape and other network tools.
Tips on setting up a security onion server on my home network.
Back in the early oughts, a common complaint about Linux was that while it was free/libre, it came with no support and you had to pay expensive senior sysadmins to run Linux systems. Fast forward to today, and Linux has conquered basically every field except for the desktop market. Then connect the cable from the LAN side of your Firewall into the switch and mirror all the traffic to another port that the SO Server is connected to. You should inspect and manage the events in Sguil everyday, its database doesn’t grow too big.
ESM takes NSM to the next level and includes endpoint visibility and other telemetry from your enterprise. First, it's important to note that Wazuh is an optional component of Security Onion and does not have to be enabled. Furthermore, the issue exists in the Windows agent itself and not the Wazuh server that runs on the Security Onion node.
That NUC will work but just barely, and perhaps not with future versions, especially if you want SO to run everything on one box. 8 GB RAM is the minimum, due to the Elastic components. I've been trying the future SO, hybrid hunter, and although the devs say 8 GB is the minimum, I needed 10 GB RAM. To future proof your investment, buy 16 GB RAM. This will also remove any custom configuration you may have had in Snorby, including asset names.
You can use Security Onion to monitor north/south traffic to detect an adversary entering an environment, establishing command-and-control , or perhaps data exfiltration. You’ll probably also want to monitor east/west traffic to detect lateral movement. As more and more of our network traffic becomes encrypted, it’s important to fill in those blind spots with additional visibility in the form of endpoint telemetry. Security Onion can consume logs from your servers and workstations so that you can then hunt across all of your network and host logs at the same time.
Once completed we are prompted to restart our system, which we do. Following our restart we can begin the second phase of the setup process. Once everything uploads we’re ready to create our VM! Security Onion is much more of an enterprise analysis tool.
These plays are fully self-contained and describe the different aspects around the particular detection strategy. In addition to network visibility, Security Onion provides endpoint visibility via agents like Beats, osquery, and Wazuh. Full packet capture is like a video camera for your network, but better because not only can it tell us who came and went, but also exactly where they went and what they brought or took with them . It’s a crime scene recorder that can tell us a lot about the victim and the white chalk outline of a compromised host on the ground. This article is very informative, but i have some questions as i have only modem and access point in my home and it’s not capable of configuring span/mirror port. Now we just need to head back to our Security Onion and run the command again!
If we hit followed by we’re able to define everything we want for our project. Once you get to where you are able to define what settings are used in the VM you’re going to want to assign your second network adapter as well as specify to use a Datastore ISO file. Security Onion is a free and open platform for Network Security Monitoring and Enterprise Security Monitoring . NSM is, put simply, monitoring your network for security related events. It might be proactive, when used to identify vulnerabilities or expiring SSL certificates, or it might be reactive, such as in incident response and network forensics. Whether you’re tracking an adversary or trying to keep malware at bay, NSM provides context, intelligence, and situational awareness of your network.
No need to install extra tools, we bundle all the apps you might need. Use Security Onion to import full packet capture files for quick static analysis and case studies. Spin up a virtual machine quickly and get started in just a few minutes. Security Onion supports several host-based event collection agents including Wazuh, Beats, and osquery. Just point them to your installation and it's off to the races. Integration of The Hive, once Security Onion's Hybrid Hunter code becomes production-ready, will make it possible for SOC analysts to escalate events in Kibana to active incident response cases.
If there are issues, you can review logs, services, and containers for any additional clues. If you need help, please see our support information below. Does Security Onion do exactly what you want it to do? In the diagram below, we see Security Onion in a traditional enterprise network with a firewall, workstations, and servers.
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