due to the increase in the network transactions in the modern era there are often cases when we face some problems regarding network issues but are there exactly network issues or is somebody spying on us well such cases are regarded as network sniffing cases but how exactly a hacker hack into a network system well for today's topic we'll understand the same hi guys and welcome to yet another interesting video simply learn if you love watching tech videos subscribe to our channel and hit the bell icon to never miss an update from us for today's agenda we'll understand what exactly is network sniffing then see some tools that are used for network sniffing purpose and lastly we'll understand what exactly is the wireshark tool let's take a look at network sniffing to access the network related information between devices to gain profit or use the hacked data for illegal purpose is known as network sniffing this is a process where a hacker or a measures programmer spy into the network devices of our system they can access different websites that we visit often or see our network habits let's take a look at different tools that are suitable for sniffing purpose network sniffing tools are software's that are available on the internet that can be used to sniff into the network let's take a look at some of the famous network tools first one is awk this is a networking sniffing tool which has specialization in intelligent analysis for network packets next is wireshark this software tool is best to look into protocol related data packets that are often transmitted over the network and lastly we have solar wind network packet sniffer where the performance of this sniffing tool is best where the performance management is to be looked into let's take a look at the wireshark sniffing tool this is an open source network sniffing software which is specifically designed to attack data packets during a transmission over the network this type of software uses different color combinations to represent different packets and protocols let's take a look at some of the uses for the sniffing software the first uses it is used to analyze network packets whereas it can also be used to troubleshoot different network issues which are often used by different engineers to test whether the software or a network device is susceptible to an attack and lastly it is also used to check malicious and hacking possibilities on the network now that we are completed with the briefing for the software that is known as wireshark let's take a look at the actual demo how exactly network sniffing is done you can directly access the wireshark software website where you can find the download option and download the most suitable version for your laptop or computer device after downloading the software when you install it you will get something like this as we can see these connections are the connections that are connected to my laptop right now and the difference in the graph that we can see over here represent the traffic on the network that is present to much better understand what exactly is going on the network we can access one of them let's access the wi-fi network on my laptop after accessing the network we can see some packet settings like this these represents the packet transaction that has been made on my network through the internet and this is how a hacker or a cyber criminal knows how exactly we use a network services this part of the wireshark represents different detailed information about the transaction that has been made and the last section represents some raw data or garbage data but how exactly a hacker use all this jumbled data and hack into a system well to clarify this there's an option that can be used that is known as display filter on the wireshark software if you want to search for a specific protocol for example tcp we can write tcp in the search filter and search and now as we can see we only get the protocols that are related to tcp this is how we can differentiate different protocols and access some of them to gain knowledge about what exactly is going on in the network let's try accessing some other protocol now for example dns and as we can see only the protocol and the data packet that is related to dns protocol is visible to us to further enhance the display filter let's try accessing a different page on the web browser for example simplylearn. com when we access the simplylearn website we can see the professional courses that are available but let's take a look at the changes that has been made on the wireshark to know this let's write tcp and a keyword included contains and one more thing to include over eis during the display filter if you write something that is related to the software it will represent in a green color like this but if you write some error related keywords like this it will represent in the red let's continue with the search setting including the contains keyword and writing simply learn and entering now as we can see these two related data packets represent the simply learn website that we access just now where the source destination ip address represent my system address whereas the destination that is 13. 224.
21. 74 represent the simply learns ip address let's take a look and in the garbage area or the raw data we can take a look simply learn website to see some more details regarding the same you can access the transport layer security and the transmission control protocol where we can see the source port the destination port which is always 443 as well as the flag and the timestamp for the same this is how hackers get the data about our network settings but if we want to search for more data related to simply learn website that we visited just now there's an another filter that we can use for example using ip dot add r space equal equal and writing the i p address for the website simply learn that is thirteen point two two four 0. 21.
