If your organization is using a security incident and event management (SIEM) server, you can integrate Office 365 Advanced Threat Protection with your SIEM server. SIEM integration enables you to view information, such as malware or phish detected by Office 365 Advanced Protection, in your SIEM server reports. To set up SIEM integration, you use the Office 365 Activity Management API.

To uniquely identify the fields that you want to extract from a JSON object, your JSON expression must follow specific JSON keypath conventions.

This is a nice question.

As a matter of fact, tcpdump is the first software found after the wire (and the NIC, if you will) on the way IN, and the last one on the way OUT.

Wire -> NIC -> tcpdump -> netfilter/iptables

iptables -> tcpdump -> NIC -> Wire
Thus it sees all packets reaching your interface, and all packets leaving your interface. Since packets to port 53 do not get a reply, as seen by tcpdump, you have successfully verified that your iptables rules have been correctly configured.

EDIT

Perhaps I should add a few details. tcpdump is based on libpcap, a library which creates a packet socket. When a regular packet is received in the network stack, the kernel first checks to see whether there is a packet socket interested in the newly arrived packet and, if there is one, it forwards the packet to that packet socket. If the option ETH_P_ALL is chosen, then all protocols go thru the packet socket.

libpcap implements one such packet socket with the option activated, keeps a copy for its own use, and duplicates the packet back onto the network stack, where it is processed by the kernel in the usual way, including passing it first to netfilter, the kernel-space counterpart of iptables. Same thing, in reverse order (i.e., first netfilter then last the passage thru the packet socket), on the way out.

Is this prone to hacking? But of course. There are certainly proof-of-concept rootkits using libpcap to intercept communications destined to the rootkit before the firewall can lay its hand on them. But even this pales in comparison with the fact that a simple Google query unearths working code hiding traffic even from libpcap. Still, most professionals think the advantages vastly outweigh the disadvantages, in debugging network packet filters.

We’re back with the latest iteration of users discovering things on their network via Pi-hole. This post is a compilation of things users have discovered over the past year. Some were bad, some were interesting, and some were enlightening. This isn’t the first time we’ve written a post like this, but we will try to go into more detail about what people have discovered and group together similar discoveries. Below you’ll find previous renditions of this type of post.

When you create a log source extension, you might encounter some parsing issues. Use these XML examples to resolving specific parsing issues.

You create log source extensions (LSX) when log sources don't have a supported DSM, or to repair an event that has missing or incorrect information, or to parse an event when the associated DSM fails to produce a result.

Many users have had issues with incorrectly auto detected log sources.  In some extreme cases, incorrectly detected devices can have a major performance impact, which would lead to degradation on ecs-ec. The solution for this problem was to move this configuration into the database.

The DSM Editor is a new capability introduced in QRadar 7.2.8 that allows you to create a custom parser for getting your events into QRadar in a usable and user friendly way. This page will give an overview of how to use the editor and then create an extension to share your creation.

How does QRadar handle events or flows that temporarily exceed my license limit?

What steps can administrators review before they attempt to update their QRadar deployment?

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Teacher resources and professional development across the curriculum

The online community for SysAdmins and DevOps

Hacker Factor Solutions provides whitepapers and journal articles. Most documents are created and provided privately to customers. The following list represents a sample of documents created by Hacker Factor Solutions and released publicly. The copyrights for these documents have been transfered to their respective owners.

The project SIEM Analytics is designed to assist professionals in choosing SIEM systems, to talk about the strengths and weaknesses of the most common SIEM systems, as well as to give a preliminary comparative analysis of SIEM systems.

Restoring a backup archive is useful if you want to restore previously archived configuration files, offense data, and asset data on your IBM® Security QRadar® system.

Syslog messages from transit network devices can provide insight into and context for security events that may not be available from other sources. This insight aids in determining the validity and extent of an incident. Within the context of a security incident, administrators can use syslog messages to understand communication relationships, timing, and, in some cases, the attacker's motives and/or tools. These events should be considered complementary and should be used in conjunction with other forms of network monitoring that may already be in place.

Administrators looking for the latest firmware downloads can review this page to locate firmware updates for QRadar appliances. The installation instructions include a direct download link to the firmware from IBM Fix Central.

How do I locate known issues or open defects logged against QRadar?

How can you determine the physical specifications of an appliance?