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1. #NAME AT LEAST FIVE DIFFERENT SCANS THAT MAY BE PERFORMED WITH ZENMAP HOW TO#
2. #NAME AT LEAST FIVE DIFFERENT SCANS THAT MAY BE PERFORMED WITH ZENMAP SOFTWARE#

Listening: A service is said to be “listening” on a port when it is binding to a port/protocol/IP address combination in order to wait for requests from clients of the service. Internet Sockets: A file descriptor that specifies an IP address and an associated port number, as well as the transfer protocol that will be used to handle the data.īinding: The process that takes place when an application or service uses an internet socket to handle the data it is inputting and outputting. Port: An addressable network location implemented inside of the operating system that helps distinguish traffic destined for different applications or services. Here are some terms that will help you understand the discussion that will follow: Some knowledge of terminology is needed to understand port configuration. This layer is the main layer that ports are associated with. The transport layer is the layer primarily concerned with the communication between different services and applications. There are many layers in the OSI networking model.

#NAME AT LEAST FIVE DIFFERENT SCANS THAT MAY BE PERFORMED WITH ZENMAP HOW TO#

For more information about IPv6 tools, refer to this guide: How To Configure Tools to Use IPv6 on a Linux VPS If your VPS is configured for IPv6, please remember to secure both your IPv4 and IPv6 network interfaces with the appropriate tools. For example, “nmap” scans IPv4 addresses by default but can also scan IPv6 addresses if the proper option is specified (nmap -6).

In Linux, IPv6 security is maintained separately from IPv4. Note: This tutorial covers IPv4 security. When you’re done you’ll be able to identify common ports and scan your systems for open ports. You’ll use the netstat program to identify open ports, and then use the nmap program to get information about the state of a machine’s ports on a network.

In this tutorial you’ll explore ports in more detail. Since it’s the default, your browser adds the port for you. For example, when you connect to, you’re connecting to the server on port 443, the default port for secure web traffic.

#NAME AT LEAST FIVE DIFFERENT SCANS THAT MAY BE PERFORMED WITH ZENMAP SOFTWARE#

In many cases, the software you use specifies the port for you. When you make a connection to a server, you connect to the the IP address and a port. In order for each of these services to communicate, they each listen and communicate on a specific port. A single IP address may have many services running, such as a web server, an application server, and a file server. In TCP/IP and UDP networking, ports are endpoints for logical communications. There are various layers, protocols, and interfaces, and many tools and utilities that must be mastered to understand them. Networking is an expansive and overwhelming topic for many budding system administrators.