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Wireshark display and capture filters

Wireshark Filters: Display vs Capture

A common thought by beginners when it comes to Wireshark filters is that display and capture filters do the same thing. Well, they don’t; they may seem to be doing the same thing to you but the difference is when the packets get filtered.

Display filters don’t stop Wireshark from capturing any packets, you still capture all packets but it only displays you the packets you asked for. While capture filters when used make it so Wireshark won’t capture any packets that you have specified not to.

Wireshark Filters

 

Wireshark

Wireshark Basic Overview

What is Wireshark?

Wireshark is open source software for Windows and UNIX/Linux, open source meaning that anyone can download it for free and can if they want alter the source code however they please. It’s considered the best network packet analyzer you can use today.

But, What is a network packet analyzer?

A network packet analyzer captures network packets on a specified network and would then display very detailed data about the network protocols of each packet.

Typical users are:

Network administrators- who can use it to troubleshoot network issues

Cyber Security Engineers- Can watch and see any attempted attacks on a network

Developers- to Debug protocols

Wireshark Logo

 

For more information check out

https://www.wireshark.org/

 

 

Check out our post on display filters and capture filters 

 

Cryptocurrency Bitcoin

Cryptocurrency Basics

During this years’ summer, you may have started to hear people and the news talking about the Cryptomarket and Cryptocurrency. These terms may be new to a vast majority of people, but they have actually been around for a few years, pointing back to 2009 with the creation of Bitcoin. The reason you’re hearing about them is due to record highs being posted in May and early June. Bitcoin reached around $3000 per coin, and Ethereum posted a record of $417.21 during June. Just last December one Ethereum coin only cost $6! With these huge gains, more people wanted to invest and reap the same benefits, causing the once little known cryptocurrency world to hit the mainstream.

WHAT EXACTLY IS CRYPTOCURRENCY?

Simply put its digital currency.Bitcoin

WHERE DO YOU GET THEM?

There are two ways to get your hands on these coins. First, you could purchase them, or you could mine them. However, buying coins isn’t the most user-friendly experience, with some sites having problems due to traffic. But it is still very similar to buying and trading stock in the stock market. To get coins from mining you must first have a “Mining Rig”. This is a computer that uses graphics cards or the CPU to mine. There are also specially developed machines call ASIC machines that can mine coins. The coins have different algorithms, so depending on what coin you want to mine will depend on which hardware route you will take.

WHAT IS MINING AND HOW DO YOU DO IT?

First, mining is setting up your computer or ASIC machine to use its computing power to support the network’s transactions. Your computing power is used to validate and process transactions where your coin is being used. Each time a transaction occurs, they must pay a transaction fee, which will then be evenly distributed to miners on the network. This is based on the amount of work their machines did to support said transaction.

To actually get mining, you must first choose your correct hardware. Then, once you research which coin you want to mine, you download and run specialized software to begin mining. A simpler way is to use Nicehash miner, which once downloaded, all you have to do is click mine and the program will mine the most profitable coin for your machine and automatically turn it into Bitcoin for you. Depending on which coin you’re trying to mine, you’re also going to need a wallet to store your coins in, as leaving them on an exchange or anywhere on the internet is risky. Each coin has wallets you can download locally onto your machine or smartphone. You can also buy external hardware wallets which provide an extra layer of security for your coins.