Graylog, headquartered in Houston, offers their eponymous platform for centralized log management that helps users find meaning in data faster so as to take action immediately. Graylog is available via Enterprise and Cloud plans, but also has a Small Business Plan, and an Open (free) plan with limited features.
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Microsoft Sentinel
Score 8.4 out of 10
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Microsoft Sentinel (formerly Azure Sentinel) is designed as a birds-eye view across the enterprise. It is presented as a security information and event management (SIEM) solution for proactive threat detection, investigation, and response.
For small companies, Graylog is the best solution possible. It's easy to configure and "just works." Above everything else, it's free. The only thing I hold against it is the fact that it's Linux-based. [This] makes sense because Elasticsearch is Linux-based. But Linux adds a layer of complexity that we don't need for something basic as a logging server. I'm pretty sure that we would have had a logging server years earlier if I had to convince quite a few decision-making people to go ahead with it anyway.
We use it because when a user sees the suspicious activity on his account, Microsoft Sentinel gives alerts to the user's system and the admin system as well. When a user of one of our systems clicked a spam email, that email was trying to install a virus on our server, but Microsoft Sentinel gave an alert to the user and admin both, so that is why our team was able to fix that issue with Microsoft Sentinel very fast. However, it will not be the best option for you if your team is utilizing every feature but you are on a tight budget.
Graylog does a great job of its core function: log aggregation, retention, and searching.
Graylog has a very flexible configuration. The backend for storage is Elasticsearch and MongoDB is used to store the configuration. You have to option to make your configuration as simple as possible by storing everything on one box, or you can scale everything out horizontally by using a cluster of Elasticsearch nodes and MongoDB servers with several Graylog servers pointed to all the necessary nodes.
Graylog does a good job of abstracting away a fair portion of Elasticsearch index management (sharding, creation, deletion, rotation, etc).
I appreciate that it keeps the data within our, what we call our, authorization boundary. The fact that the data remains within Microsoft's, I guess, walled garden if you will, is very helpful for certain compliance needs in particular.
The large library of ingestion: ability to ingest is basically as easy as I can basically get it to be most of the time. There's occasionally some vendors that it's a little bit more challenging for, but given the ease of integration for a lot of things, basically it's become one of my requirements when I am looking at other tools is how easily do they integrate with Sentinel.
I think it should include more third party integration with non microsoft products as well as with other cloud providers. These integrations should be native.
It should improve ML and AI capabilities.
I find its documentation a little bit difficult to understand at the start. So the words should be simple.
The Microsoft Azure Sentinel solution is very good and even better if you use Azure. It's easy to implement and learn how to use the tool with an intuitive and simple interface. New updates are happening to always bring new news and improve the experience and usability. The solution brings reliability as it is from a very reliable manufacturer.
Community support does not give simple straightforward answers; simply search up Graylog Issues and look at some of the responses on the forums. The documentation is your only hope if you are on the free version, as you can NOT purchase only support. The few times I have worked with Graylog Enterprise support they were great though.
In terms of log aggregation, the free product fully stacks up with the competitors listed. Full control over the data ingests for flexible configuration. Graylog even better on that front than AlienVault USM because you cannot configure the variable mapping. We haven't used the threat exchange stuff or correlation. But with regex searches, we have created function dashboards that show threat theater pictures of our network based on logs from our firewall.
Well before there was Microsoft Sentinel, you had other competing products like ArcSight or Splunk, et cetera. I think they have their own qualities, but the Microsoft integration story is really why we're using it.
Graylog is just less expensive than some other options which meant it fit into our budget otherwise we might not be able to justify a higher cost.
Being able to track issues that we normally couldn't track using other tools is a bonus to help us know of any issues we have and can fix before an outage or failure that could potentially cost money.
We have had to spend more time than I would like to understand and customize Graylog which has taken time away from other tasks and projects.
As any cybersecurity product, this has to be more with risk to avoid loss in case of a ransomware that more than relate to a productivity increase. Maybe the impact could be that instead of having people that are checking 24/7 the dashboard, you could implement Sentinel and have less people checking that or people with less expertise. So the saving will be a minor but will be a saving in the cost of your team.
