2. When running a scan on your computer, you find that a session has been established
with a host at the address 208.85.40.44:80. Which Application layer protocol is in use
for this session? What command-line utility might you use to determine which
computer is the host?
The Application layer protocol that is likely in use for this session is HTTP (Hypertext Transfer Protocol), as port 80 is commonly used for HTTP communication.
To determine which computer is the host at the IP address 208.85.40.44, you can use the command-line utility called "nslookup" or "ping" on most operating systems. Here's how you can use each utility:
1. nslookup:
- Open a command prompt or terminal.
- Type the following command: nslookup 208.85.40.44
- Press Enter.
- The utility will display the hostname associated with that IP address, if available.
2. ping:
- Open a command prompt or terminal.
- Type the following command: ping 208.85.40.44
- Press Enter.
- The utility will display the IP address and hostname (if available) of the host computer, as well as the status of the connection.
Note: These commands may vary depending on your operating system.
To determine the Application layer protocol in use for the session established with the host at the address 208.85.40.44:80, you can perform the following steps:
Step 1: Identify the Application layer protocol:
In this case, the default port 80 indicates that Hypertext Transfer Protocol (HTTP) is being used for the session. HTTP is commonly used for web communication.
Step 2: Determine the host computer:
To determine which computer is the host at the given IP address, you can use the command-line utility called "nslookup." Nslookup allows you to query DNS (Domain Name System) servers to obtain information about domain names and IP addresses.
To use nslookup, follow these steps (assuming you are using a Windows operating system):
1. Open the command prompt by pressing the Windows key + R, then type "cmd" and press Enter.
2. In the command prompt, type "nslookup" followed by a space.
3. Enter the IP address you want to check, in this case, 208.85.40.44, and press Enter.
The nslookup utility will provide you with information about the host associated with the given IP address.
Note: If you are using a different operating system, such as macOS or Linux, you can use similar command-line utilities such as "dig" or "host" to perform a similar query.