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Networks

SMB Port Numbers: A Guide to Optimizing and Securing Your Network

In the digital age, where data is the new gold, ensuring the security and efficiency of network communication is paramount for businesses of all sizes. The Server Message Block (SMB) protocol plays a crucial role in facilitating file sharing, network browsing, and printer access among devices on a network. Understanding SMB port numbers is essential for IT professionals looking to optimize and secure their networks.

Exploring host discovery techniques in a network

In a network assessment, one of the first tasks is to narrow down a large set of IP addresses to a list of active or interesting hosts. It's like trying to find specific houses in a big neighbourhood without knocking on every door. Scanning every possible connection of every single IP address can be slow and often unnecessary. What makes a host interesting depends on what you're looking for.

RMM Software: How to Protect it with a Firewall

Remote monitoring and management (RMM) solutions provide flexible methods to enable MSPs to detect network or device anomalies early, facilitating proactive systems monitoring. While these tools are deployed for legitimate purposes, it is common for cybercriminals to make malicious use of them.

Windows NT Lan Manager Hardening Best Practices

Windows New Technology LAN Manager (NTLM) is an outdated challenge-response authentication protocol developed by Microsoft. Despite being surpassed by Kerberos, NTLM remains in use as a form of Single Sign-On (SSO), allowing users to authenticate to applications without directly providing their passwords.

Dual Defenses: 9 Reasons Why Open NDR Is Essential Alongside NGFW

Securing a network against the myriad of evolving cyber threats requires more than just a robust firewall or endpoint protection platform; it demands a multifaceted approach. Corelight’s Open Network Detection and Response (NDR) Platform complements and significantly enhances the effectiveness of next-generation firewalls (NGFWs). Here are 9 reasons why adding Corelight to your cybersecurity arsenal, alongside existing NGFWs, is not just an upgrade but a strategic necessity.

When Patch Tuesday becomes Patch Monday - Friday

If you’re an administrator running Ivanti VPN (Connect Secure and Policy Secure) appliances in your network, then the past two months have likely made you wish you weren’t. In a relatively short timeframe bad news kept piling up for Ivanti Connect Secure VPN customers, starting on Jan. 10th, 2024, when critical and high severity vulnerabilities, CVE-2024-21887 and CVE-2023-46805 respectively, were disclosed by Ivanti impacting all supported versions of the product.

The Kubernetes network policies you need today

In the dynamic world of Kubernetes, container orchestration is just the tip of the iceberg. In this sophisticated ecosystem, you must prioritize security efficiency. Kubernetes’ robust, open-source platform has been revolutionary in automating the deployment, scaling, and management of application containers. Yet, such capability comes with significant responsibility, particularly in network security. Here, the role of network policies becomes crucial.

Demystifying GenAI security, and how Cato helps you secure your organizations access to ChatGPT

Over the past year, countless articles, predictions, prophecies and premonitions have been written about the risks of AI, with GenAI (Generative AI) and ChatGPT being in the center. Ranging from its ethics to far reaching societal and workforce implications (“No Mom, The Terminator isn’t becoming a reality… for now”). Cato security research and engineering was so fascinated about the prognostications and worries that we decided to examine the risks to business posed by ChatGPT.

Hyper-V Cluster NIC Teaming

NIC teaming in Hyper-V refers to the process of combining multiple network interface cards (NICs) into a single logical NIC, also known as a team or virtual NIC. The goal of NIC teaming is to provide improved network performance, availability, and redundancy. When multiple NICs are teamed together, the traffic can be distributed across them, reducing the load on any single NIC and increasing overall throughput.

Fake Data Breaches: Why They Matter and 12 Ways to Deal with Them

As a Chief Information Security Officer (CISO), you have the enormous responsibility to safeguard your organization’s data. If you’re like most CISOs, your worst fear is receiving a phone call in the middle of the night from one of your information security team members informing you that the company’s data is being sold on popular hacking forums.