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What is a TCP Port: Different Between TCP and UDP Ports

NW Kings

Understanding TCP ports is essential for managing network traffic and ensuring effective communication. But what is a TCP port? This blog will delve into what a TCP port is, how it works, its significance in networking, and the different types of ports, including well-known and dynamic ports. What is a TCP Port?

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How to find applications with NetFlow

Kentik

You can also learn about the protocols in use, the ports being used, the top interfaces, etc. Source port for UDP or TCP, 0 for other protocols. Destination port for UDP or TCP, type and code for ICMP, or 0 for other protocols. Don’t rely on ports. It’s pretty much impossible to block HTTP and HTTPS ports at the firewall.

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Network Engineer Roadmap | Complete Guide for 2025

NW Kings

At Network Kings, you will learn networking concepts (routing, switching, IP addressing) and basic network security fundamentalssuch as how to block websites and manage port numbers. Networking Fundamentals and Firewalls After mastering CCNA and CCNP, it’s time to delve into firewalls.

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Protect Your Systems Now from the Critical Windows SMBv3 RCE Vulnerability

CATO Networks

A hacker could attack systems from outside the enterprise network directly if a systems SMB port has been left open to the Internet. By default, Windows Firewall blocks external connections to the SMB port, however. The malware would then exploit the new SMBv3 vulnerability to spread across other Windows systems on the network.

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Advisory: Why You Should (Still) Care About Inbound Network Scans

CATO Networks

In some cases, network scanners will use port scans and in other cases ping sweeps. This also applies to attacks on web servers, which may store valuable information such as personal information about web-site users, like their email addresses and passwords. What is Network Scanning? Different techniques may be used.

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What is Network-as-a-Service and Why WAN Transformation Needs NaaS and SASE

CATO Networks

billed on an opex model consumption-based, via a metered metric (such as ports, bandwidth or users), (not based on network devices/appliances). NaaS offerings may include elements such as network switches, routers, gateways and firewalls. A permissions issue caused by a reconfigured firewall rule? Was it a last-mile issue?

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Improving Legacy Approaches to Network Capacity Management

Kentik

How do you figure out when your links, routers, switches, firewalls, and other network infrastructure are going to run out of capacity? At the bottom of the Alert Thresholds page is a spot where you can configure how you want to be notified (email, Slack, Syslog message, JSON Post to a webpage, or PagerDuty notification).

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