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LogRhythm SIEM vs Security Onion comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 9, 2024

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

LogRhythm SIEM
Ranking in Log Management
14th
Average Rating
8.4
Reviews Sentiment
6.4
Number of Reviews
175
Ranking in other categories
Security Information and Event Management (SIEM) (8th)
Security Onion
Ranking in Log Management
19th
Average Rating
7.6
Reviews Sentiment
5.5
Number of Reviews
3
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2025, in the Log Management category, the mindshare of LogRhythm SIEM is 2.2%, down from 2.7% compared to the previous year. The mindshare of Security Onion is 4.6%, down from 5.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Log Management Market Share Distribution
ProductMarket Share (%)
LogRhythm SIEM2.2%
Security Onion4.6%
Other93.2%
Log Management
 

Featured Reviews

SumitKumar20 - PeerSpot reviewer
Tool consistently aids in effective threat detection and monitoring but could benefit from improved log source management and resource optimization
One major area for improvement in LogRhythm SIEM is the lack of volume measurement capability in terms of storage. There is currently no way to determine how much data is being consumed in terms of gigabytes, terabytes, or petabytes from particular devices or environments. This information is crucial for planning future storage needs and scalability. The system monitor (collector) agent has issues with resource consumption. Even when not actively collecting data, the agent continues to consume significant CPU and memory resources, which can be particularly problematic for small business environments with limited resources. LogRhythm SIEM could improve by adding more default device support. While they have good default settings for devices such as Palo Alto firewalls, custom log sources often require extensive work. Increasing the number of supported devices with built-in policies and functionality would reduce the need for custom work. Competitive SIEM tools often provide more comprehensive coverage for various devices and vendors.
Jörg Kippe - PeerSpot reviewer
A mature and affordable solution that is easy to install and easy to update
The product takes time to learn, it's not that easy. In the beginning we had a lot of questions. If you want to use such a tool in an real (industrial) environment, you have to ask how to get the network data. Can we do a full packet capture? Can we provide agents to our end systems? There are no simple solutions to these questions. It's a general problem when running such systems in an industrial environment.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"It gives us insight into our entire installation, where we are multiple sites, going as far as the East Coast to the Central West Coast."
"One of the main features that I like about LogRhythm NextGen SIEM is that there are a lot of pre-built pieces. Like with our AV, we didn't have to tell it how to read the logs; they already had it pre-made. So, we essentially just had to follow their guide to get the logs imported in and set up some rules for it. We've only had to manually create the parsing rules for a few of our vendors so that we could interpret the logs correctly. Most of them had already been pre-created for us."
"I like LogRhythm's ease of use. The solution has improved compared to previous versions. It had many issues before, like integration, the console, creating reports, false positives, etc. The AI engine has made it stronger in the latest version."
"The major feature of this solution is its easy configuration which helps different team members to work on it effectively. This kind of feature is not available in other solutions because of a request for specialised schemes for configuration report extraction and searching. Another feature that I really admire is the significant improvement in the compliance in the auditing process by the solution. Our organisation-specific complaints require where the mailbox data needs to be forwarded, stored and searchable for a certain time period. This solution categorises data based on different types, which include cold, warm and hot data. These features allow faster and easier extraction of any data even if the event was occurring several years ago. I also like other features, especially user behaviour analysis and automation. If suddenly someone accesses your side or an unusual traffic is recorded from a user the solution flags it very effectively."
"The most valuable feature of LogRhythm for me is the ability to correlate logs throughout many different log sources."
"It allows us to automate a lot of things with a smaller team."
"As a SIEM, probably the best feature is that it can be tuned effectively. There are very few SIEMs out there that can be effectively tuned to provide you with meaningful information and not be overwhelmed."
"LogRhythm's dashboard is very good compared to other SIEM solutions since it shows many details."
"The most valuable feature of Security Onion for security monitoring is its ability to find infected ports."
"We use Security Onion for internal vulnerability assessment."
"Security Onion is the most mature solution in the market."
 

Cons

"Technical support could use a little work in the terms of responding back. The feedback that we received is they do need a little more staff."
"We do about 750 million a day and some days we do 715 million. Some days we do 820 million or 1.2 billion. But there's no way to drill in and find out: "Where did I get 400,000 extra logs today?" What was going on in my environment that I was able to absorb that peak? I have no way to identify it without running reports, which will produce a long-running PDF that I have to somehow compare to another long-running PDF... I would like to see like profiling behavior awareness around systems like they've been gunned to do around users with UEBA."
"Sometimes, the tool fails to get the correlated events that triggered the alerts."
"We need to get better training for things like creating code and playlists. The way it's done now takes a long time."
"Granted, we haven't enabled the UEBA module, but we're forwarding all our proxy logs to LogRhythm and we have a really hard time pulling those proxy logs back out of LogRhythm. However, when we take LogRhythm and forward the same logs into somebody else's user-based analytics software, we get the majority of what we were missing... If we've got all our proxy logs and I go out to Google or Facebook or the like, we should be able to go in and pull that information out ten minutes later, but it's a big challenge to do that."
"In terms of blind spots, we are looking for more improvements since we don't have visibility over everything."
"One of the challenges of the SIEM for the LogRhythm 7 platform is the amount of time it takes to bring new log sources into the MDI."
"There used to be the ability to create alarms based on message text that was included in LR Version 6.x that has been removed in LogRhythm 7.x, and on that, I would like to see it added back."
"The initial setup of the solution is a little bit difficult."
"Security Onion's user interface could be improved."
"The product is not easy to learn."
 

Pricing and Cost Advice

"The pricing is very reasonable and accessible compared to other products in the market but I am not very sure about the exact licensing cost per year for our company."
"The license cost is around $10 per MPS."
"We work with French-speaking African countries, and it costs more than the average SIEM solution. Also, the pricing isn't too flexible. AlienVault, Splunk, and IBM QRadar are more suitable for customers on a tight budget."
"Look closely at the cost of licensing of other products. This should include setups and the need for support services. I did a RFQ to 2 other vendors before choosing this product."
"I think the tool is reasonably priced. There is a need to pay per year towards the licensing costs of the tool."
"I would recommend talking to the rep. That's the biggest thing because they will know what questions to ask."
"I give the price a six out of ten."
"In comparison to the competition, they are more affordable. This allows us to do more with less."
"It is an open-source solution."
"Security Onion is an open-source solution."
"Security Onion is a free solution."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Government
10%
Financial Services Firm
8%
Manufacturing Company
7%
University
11%
Computer Software Company
11%
Comms Service Provider
10%
Government
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business38
Midsize Enterprise38
Large Enterprise83
No data available
 

Questions from the Community

What is the difference between log management and SIEM?
Rony, Daniel's answer is right on the money. There are many solutions for each in the market, a lot depends upon your ability to manage such tools and your budget. A small operation may be best s...
What needs improvement with LogRhythm NextGen SIEM?
I cannot think of any specific features that LogRhythm SIEM can improve upon since it supports a wide variety of major vendors. However, they need to improve their parsing techniques; the tool shou...
What do you like most about LogRhythm SIEM?
I find LogRhythm's log management capabilities to be beneficial.
What do you like most about Security Onion?
The most valuable feature of Security Onion for security monitoring is its ability to find infected ports.
What is your experience regarding pricing and costs for Security Onion?
Security Onion is an open-source solution. On a scale from one to ten, where ten is expensive and one is cheap, I rate the solution's pricing a six out of ten.
What needs improvement with Security Onion?
The initial setup of the solution is a little bit difficult.
 

Also Known As

LogRhythm NextGen SIEM, LogRhythm, LogRhythm Threat Lifecycle Management, LogRhythm TLM
No data available
 

Overview

 

Sample Customers

Macy's, NASA, Fujitsu, US Air Force, EY, Abbott, HD Supply, SAB Miller, UCLA, Raytheon, Amtrak, Cargill
Information Not Available
Find out what your peers are saying about LogRhythm SIEM vs. Security Onion and other solutions. Updated: July 2025.
866,755 professionals have used our research since 2012.