Wireshark is a phenomenal networking tool, aka the Network/Traffic Analyzer, it's free and one of my all time favorites. You don't believe me? Let me prove it to you. So we have to have some kind of system that takes these names such as '' or '' and translate it to what IP address is really there. DNS translates names to IP addresses, because remember in the OSI model at the network layer we can't squeeze in '' because it deals with IP. I will tell you one that you use every-single-day and it's named DNS(Donaim Name Service). But there is also some other data applications out there that use UDP as well. In that case, we have some IP phones and there is a stream of data going between those and if something is dropped, it's gone, there is no use in retransmitting it at a later time because it's real-time traffic.

The first thing that happens is something known as a 3-way handshake. In order to say 'I know it got there', there is a lot of setup that takes place. So the question is, why would you want to send a 'I hope it gets there' request? The first thing to understand is that there is a cost to reliability. Let's get into UDP, shall we? By the way, I will not talk about TCP since there are articles about TCP/IP around Null Byte and one of them is made by OTW there, but I could make a Wireshark demonstration about it if you enjoy the UDP one. TCP - 'I know it got there' - Reliable Version.UDP - 'I hope it gets there' - Unreliable Version.

But when we are talking about programs talking across the network, they primarily use: The transport layer includes all kinds of protocols, such as TCP, UDP, ICMP, ESP that is used for VPN connections, OSPF and EIGRP which are routing protocols and many other more. In this article I'm going to walk you through one of the main networking protocols when it comes to communication across the Internet between programs, aka UDP(User Datagram Protocol). I have some stuff going on with my life and university and I haven't found enough time to make a fully in-depth article. Once again I would like to apologize for my absence for about a week or so. Hello ladies and gentlemen, I'm back with another informative(hopefully) article for you all.

Wireshark capture udp data