Splunk Enterprise vs. Tenable Nessus vs. Tenable Security Center

It's well suited for what I do, which is network security operations. And that's for anything from troubleshooting incidents, troubleshooting performance, troubleshooting for the purpose of a compliance and auditing. It's not best suited for users who are new in terms of they're new to the product and they have expectations that probably Splunk cannot meet.

Incentivized

It is an excellent tool for scanning servers, workstations, and network devices to identify missing patches and misconfiguration; we regularly use it to confirm patch effectiveness after the update; it also helps us for preparing audits such as iso 27001, and regulatory requirements, it also helps us to identify open ports and services that violate security.

[Tenable.sc (formerly SecurityCenter)] does very well for internal scanning for vulnerabilities, however it needs to be combined with Tenable.io in order to do cloud scanning.

Incentivized

• It is very useful in creating custom rules for analyzing system logs and display relevant information. The query language is very easy to learn.
• We can create custom UI to visualize the output of our data. The interface is very flexible. It also allows the sharing of rules among users.
• There is an open online community to help others. Stackoverflow also has a splunk community. These resources make it more convenient to learn.

Incentivized

• Nessus is best at performing vulnerability scans, in fact, it gives findings and moreover accurate findings of the assessments. It does not do penetration testing or exploit the vulnerabilities because it is concerned about scanning the systems/applications.
• In fact, Nessus has multiple profiles/policies to perform different types of scans such as, scans oriented for PCI-DSS, malware scans, web application scans, bad shell shock detection scan to name a few.
• Nessus has the ability to classify the vulnerabilities into risk-based categories from critical to even informational which I think is one of the things that separates Nessus from other vulnerability scanners.

Incentivized

• Vulnerability management from one place
• Maximum endpoint visibility
• Easy to set up and plan the structure
• Support desk quickly responses
• Well-prepared documentation
• Broad scanning type
• Supports various compliance standards
• User groups allows coordination between teams

• Splunk light limits number of users to 5. Wish there was a flexible license, where one could add more users.
• Splunk light does not let you add > few realtime alerts. Wish there was a flexible license, where one could add as many realtime alerts as wanted.
• Better insight into daily ingestion values

Incentivized

• The tool has lots of options for setting up before scanning any device, this methodology could be simplified further with default configuration for various devices predefined, anyhow we can use this technique by making use of policies.
• For advanced users we cannot disable the plugins inside the plugin groups, we can enable the whole set of plugins at a time, for few hundreds its ok, but thousands of plugins are of waste of resource and time.

Incentivized

• Centralized vulnerability management with sensors.
• Network health assessment and Incident response.
• For alerting or notification, it should also support the SMS gateway.

Incentivized

We are using Splunk extensively in our projects and we have recently upgraded to Splunk version 6.0 which is quite efficient and giving expected results. We keep track of updates and new features Splunk introduces periodically and try to introduce those features in our day to day activities for improvement in our reporting system and other tasks.

Nessus is best and easy to use application for Vulnerabilities finding and reporting, it has multiple platforms and wide scope covering almost all devices for security improvement so far, thus we are very likely to continue its services.

Incentivized

You can literally throw in a single word into Splunk and it will pull back all instances of that word across all of your logs for the time span you select (provided you have permission to see that data). We have several users who have taken a few of the free courses from Splunk that are able to pull data out of it everyday with little help at all.

Incentivized

Tenable Nessus is a great product and provides a lot of value, but it is difficult to set up and use and the amount of data it generates can be overwhelming. It does help us prioritize based on the severity of the detection, however there are sometimes mitigating factors that we have implemented that Nessus does not account for, which causes lots of noise in the reports.

Incentivized

based on product capabilities and usage

When properly setup and configured, Splunk is extremely reliable.

Incentivized

Splunk maintains a well resourced support system that has been consistent since we purchased the product. They help out in a timely manner and provide expert level information as needed. We typically open cases online and communicate when possible via e-mail and are able to resolve most issues with that method.

Incentivized

I haven't needed to contact support yet. But issues are easily solved with a quick internet search which means support and by extension, the larger community are involved and knowledgeable.

Incentivized

On all of the occasions that I have had to reach out to Tenable for assistance, they have been extremely helpful and knowledgeable. Solutions and support are provided quickly, and they work on the issue until it is resolved.

Incentivized

The online course was simple clear and described the main capabilities of the solution. There is also an initial module that can be done for free so anyone can familiarize themselves with the functionality of this solution. On the other hand, however, there could be more free online courses. Maybe even with a certificate, this would broaden the group of people who are familiar with the platform while increasing familiarity with the solution itself.

Smooth without too many major issues.

Incentivized

I didn't get to fully evaluate Logstash as our corporation was already using Logstash, but both seemed like viable solutions to the problem that we were having. I wanted to evaluate Logstash some more, both did seem like they would work for the business needs that we had, we went with splunk as many teams were already using it.

Incentivized

Sometimes when we identify a vulnerability with Nessus that has an exploit, we made a proof of concept with Metasploit in order to show to the IT managers the importance of the software/hardware hardening.

Incentivized

We decided to go with Tenable due to its robust reporting capabilities and competitive pricing vs its competitors. While all tools are very similar in regards to scanning capabilities we prefer Tenable SC's user interface. We also like the option to have both on-prem and cloud with theirs. Tenable io product as well.

Incentivized

Splunk can scale in to the petabyte per day range which of course is awesome

• I don't have any numbers to share but Splunk has positively served as a 24/7 monitoring tool that has saved hours of work by self-detecting, saving statistics and alerting problems in the system or from external interfaces as soon as they happen.
• Splunk dashboards does a solid job in collecting, analyzing data and creating reports that contain an entire day's activity and then automatically sent out to the business.
• Splunk is very easy to learn and very useful to any program or business application.

Incentivized

• Nessus certainly has a positive impact while me while performing my job, either as security research, or performing vulnerability assessments for clients. It gives a lot of information about the system/application after performing scans. The number of false positives is also less compared to other vulnerability scanners.
• The professional edition is very useful as policy templates available in this edition are very handy and useful even to perform compliance scan like PCI DSS scan.
• Also, the ability to export the scan results into reports in formats like HTML, PDF is very useful which could be for performing system/application reviews.

Incentivized

• Create internal/operational efficiencies
• Improve compliance & risk management
• Cost management
• Solid vulnerability scanner
• Ease, of use, and capabilities when it comes to analyzing vulnerabilities is what makes this product stand out

Incentivized