RJ45 is a type of cable connector which is mainly used in computer networks. RJ45 is mainly used for ethernet networking which is used to connect different type of devices like a switch, hub, PC, router, firewall to each other.RJ45 is the most known and popular connector type in the IT world. RJ Stands For Registered Jack Well, where the RJ comes from. RJ means Registered Jack and standardized network...
CAT5 or Category 5 is a copper cable used in computer networks and cable TV. It is popularly used in Computer Network start Ethernet which is very popular in LAN computer networks. Cable standards like CAT5 are defined by the Electronic Industries Association and Telecommunications Industry Association simple EIA\TIA. The naming of the CAT5 comes from Category 5 because it is the 5th generation cable standard which is superior to...
Local Area Network is a computer network where computers in the same location or group are connected together and shares common communication lines. Local Area Network is mainly expressed as LAN which is a very popular term in computer network and IT. LAN Components LAN will have very simple topology where some equipment or components are used. In order to connect multiple computers in a single LAN, we can use...
MAC Address is used to identify a Network Interface Card uniquely in a layer 2 network. This address is used to transfer files between default gateway and host or computer. In this tutorial we will learn how to find a MAC address from command-line or GUI in operating systems like Windows and Linux. Windows ipconfig Command Line ipconfig command provides a lot of information about the network of the current...
Network switches or Layer 2 technology Ethernet protocol uses MAC addresses in order to transfer frames between systems. MAC addresses are 48 bit value. This 48 bit value contains the device manufacturer ID as the first 24 bit. In this tutorial we will learn how to look, search and find the Organizationally Unique Identifier in Linux distributions like Ubuntu, Debian, Mint, Kali, Fedora, CentOS, RHEL etc. Mac Address As stated in...
Address Resolution Protocol (ARP) is auxiliary protocol used by Internet Protocol (IP). ARP is defined with RFC826 and gained main stream over computer networks. ARP is used to resolve IP address with MAC or hardware address of the network interface. As we know MAC address is used to identify nodes in a local network. How ARP Works ARP resolution works very simple way. The source creates requests to get MAC...
Netstat is used to display active TCP connections and related listening ports in the computer or system. Actually, there are more features provided by netstat like display statistics about network stack protocols, IPv4, IPv6, TCP, UDP etc. Syntax Syntax of the netstat command is like below. Simply we can use the following options.
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netstat [-a] [-e] [-n] [-o] [-p <em>Protocol</em>] [-r] [-s] [<em>Interval</em>] |
Display All TCP and UDP Connections with Listening Ports TCP is the most used protocol for...
Network scanning is one of the steps of penetration testing. There are different and popular tools to scan network line masscan, nmap etc. Arp-scan is a tool specifically designed to scan network with layer 2 or mac or Ethernet arp packets. Install We can install arp-scan tool with the following command.
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$ sudo apt install arp-scan -y |
Help We can print help information with the -h option.
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$ arp-scan -h |
Syntax
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Usage: arp-scan [options] [hosts...] |
Scan Local Network Most basic...
There are a lot of tools for network troubleshooting and debugging. Arping is one of them which only pings same network hosts. So what makes arping special is it uses network layer arp packets. This works on mac protocol. It is useful especially to find hosts those do not respond layer 3 and layer 4 ping requests. Install For Debian, Ubuntu, Mint, Kali We can install arping command for Ubuntu,...
Mac Address is a network address used to layer 2 network traffic. The communication is done between network nodes with mac address. It is important part of the computer networking. In this tutorial we will look different ways to get mac address practically. Getmac Command Getmac command is simple command used to get mac related information. We will use this command to get all interfaces mac addresses. We will provide...
