Network Penetration Testing, which involves assessing the security of computer networks. Since most devices are connected to a network, it is important to understand how they interact with each other and how the network itself operates. This is especially crucial for devices that are connected to the internet, as the internet is essentially a massive network. Thus, by conducting network penetration testing, we can gain valuable insights into how to protect these networks and the devices that rely on them.
Network Penetration Testing
Network Penetration Testing can be divided into three subsections:
- Pre-Connection Attacks: This section involves exploring various types of attacks that can be conducted before connecting to a network
- Gaining Attacks: This section focuses on gaining access to Wi-Fi networks by cracking the WEP/WPA/WPA2 keys.
- Post-Connection Attacks: These attacks are conducted after successfully connecting to the network, and involve intercepting connections and capturing sensitive data like usernames, passwords, URLs, and chat messages. It is also possible to modify the data being sent over the network. These types of attacks can be applied to both Wi-Fi and wired networks.
Basic of Network
In computing, a network refers to a collection of two or more devices that are linked together in order to exchange data or share resources. A typical network consists of various computer systems that are interconnected through physical or wireless connections, such as routers or servers. Routers, in particular, have direct access to the internet, while devices can only connect to the internet through the router or an access point. Essentially, a network provides a means of facilitating communication and sharing of resources among various devices, allowing for efficient and effective exchange of information.
To illustrate, let’s consider an example: Suppose a client device is connected to a network via Wi-Fi or Ethernet. If the client opens a web browser and enters “google.com” in the address bar, the computer will send a request to the router, asking for the website. The router will then connect to the internet and send a request for “google.com”, and upon receiving a response from the website, it will forward it back to the client device. The client can then view the “google.com” website on their web browser as a result. This is how network communication occurs between devices on a network.
Devices within the same network rely on packets to communicate with each other, whether it’s sending videos, logging into a website, exchanging chat messages, or sending emails. The devices use MAC addresses to ensure that the packets reach their intended destinations. Each packet contains source and destination MAC and IP addresses, and the device checks these addresses to determine whether the packet needs to be forwarded to a device within the same network or a different one.
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