Is it possible to add Geo IP information automatically to my events even if it’s not present in the original log? How can I automatically decode a URL to dissect all its components? How can I convert a human readable byte value (e.g., 1KB) to its value in bytes (e.g., 1024) so I can use…
Read MoreNetEye SIEM is a very powerful tool that allows you to ingest logs from many different sources. However, by default it does not ingest the ssh-login attempts on the NetEye Servers themselves, nor does it check the integrity of important configuration files. In this blog post I will describe a procedure to configure an Auditbeat…
Read MoreIn order to protect your business against cyber attacks you need to both harden your systems and promptly detect suspicious activities in your infrastructure. Sigma is an open source project which defines specifications for a standard signature format that allows you to describe relevant log events for security purposes. The Sigma rules language is intended…
Read MoreAs the number of cybercrime events, incidents of identity theft, theft of intellectual property, and cyberattacks continue to rise, there is an increasing need to provide adequate network security to defend against these types of threats to organizations. Defending against these types of threats is very difficult for an organization, and the attacker will always…
Read MoreIn this blog post I will describe my experience with ingesting logs from a Fortinet firewall at a customer site. During this process I exploited the brand new Filebeat 7.8.0 Fortinet module. In particular, I will describe how I went from 3K events per second (eps) to 32K eps, more than a 10x improvement.
Read MoreStarting from NetEye 4.12, NetEye SIEM is secured with X-Pack Security. NetEye comes pre-configured with some users and roles (see NetEye User Guide > Log Manager > Elasticsearch Access Control) to grant the Elastic Stack the ability to ingest, manage, and view the logs that you want to collect. For example, NetEye provides: A Kibana…
Read MoreBeats is the new method for log acquisition introduced in the latest releases of NetEye 4. It’s a system fully integrated with the Elastic Stack. The Beats agents send logs directly to Logstash, which then forwards them to Elastic. Logstash also writes each log received into files on the file system (at the same location…
Read MoreSecurity information and event management (SIEM) systems plays an important role in helping your organization comply with GDPR requirements. Find out in this upcoming webinar how your team can fully understand the implications of SIEM, and should manage it according to these regulations. Learn our 5 “musts” also recommended by data protection experts. Thursday, 18th of June, 3.00 PM…
Read MoreOver the past few months, I’ve received multiple client requests to export custom fields (custom variables or data lists) present in Icinga Director in order to enrich logs on Logstash or to make specific changes to the indexing process. The solution that I am going to explain in this article uses the Icinga DSL check…
Read MoreTalking about IT security is now clearly synonymous with resilience! We are continuously and inevitably under attack… every organization must implement defensive principles and practices that avoid the worst damage and the least impact on its survival and development. From the data selection, to its collection and normalization, for its representation and analysis with techniques…
Read MoreIn this blog post I will describe a potential use of Tornado to monitor events in near real-time, while keeping historical information about the received events. Use Case Often as a user I want to collect data from different sources, e.g. Windows events, and then according to some simple rules set the status of some…
Read MoreWith SIEM we ensure maximum security in the management of sensitive data Even the safest bulwarks require permeable zones. The same applies to the security systems we use to protect our data from unauthorized access. But every system, no matter how meticulously monitored, contains security gaps. When these become known, it is the task of…
Read MoreA bug has been discovered on NetEye modules logmanagement and SIEM. If affected, rsyslog directories on system might be created with wrong permissions causing Logstash to be unable to load log lines of some hosts inside Elasticsearch. Users might also receive an error message trying to check signatures for some hosts inside Logmanager Log Check….
Read MoreThe use case of this blog is about monitoring COVID-19 in Italy. The data used is public, and the source is the Protezione Civile (Italian Civil Protection Office), which updates the data every day after 18:00 on GitHub at the following link: https://github.com/pcm-dpc/COVID-19/tree/master/ I found the data in various formats and I chose to analyze…
Read MoreKeeping historical data around for analysis is extremely useful but often avoided due to the financial cost of archiving massive amounts of data. Retention periods are thus driven by financial realities rather than by the usefulness of extensive historical data. The Elastic Stack data rollup features provide a means to summarize and store historical data…
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