Understanding Linux Dig DNS Query
Dig is a very powerful Linux command to query DNS in Linux. We will look at the dig response today. Example of Linux Dig Response The...
Understanding DNS Port 53 with Examples
DNS port is confusing for many people. In this article, we’ll describe how DNS works, what DNS port numbers are used for DNS protocol....
Understanding TCP Connection with Examples
TCP is defined as a connection-oriented and reliable protocol. We will check out how TCP connection works in this article. How TCP...
Understanding the Difference between TCP and UDP
Acronym TCP: Transmission Control Protocol UDP: User Datagram Protocol Connection TCP: Is a connection-oriented protocol. This means the...
Understanding TCP Sequence Number with Examples
TCP Sequence Number is a 4-byte field in the TCP header that indicates the first byte of the outgoing segment. The Sequence Number field...
Understanding TCP Socket With Examples
TCP socket is a fundamental concept in the operation of TCP/IP application world. We will deep dive into the details of how the TCP...
Tcpdump: Filter UDP Packets
Tcpdump can be used to capture network packets for many protocols like UDP, TCP, ICMP, etc. We are going to review how to filter UDP...
Tcpdump: Filter Packets with Port
Tcpdump is a CLI tool to capture raw network packets. It is very useful for various forms of network troubleshooting. We will learn how...
Understanding Portmap with NFSv3
Portmap is a service that converts RPC program numbers into protocol port numbers. It must be running in order to make RPC calls. Portmap...
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