You need to restrict your company’s rank-and-file employees to using the Internet only during regular working hours (9 a.m. to 5 p.m., five days a week). However, as network administrator, you want to be able to access the network at any time of the day or night, seven days a week. How could you meet the needs of the employees and yourself?
Use Telnet to connect to the common ports for the following services. (Hint: Look at the services file if you do not know the port numbers. On a UNIX/Linux computer, the services file in located in /etc/services. On a computer running Windows, the services file is located in C:\WINDOWS\SYSTESM32\DRIVERS\ETC\ SERVICES, assuming C:\WINDOWS is your Windows installation directory. You can launch the telnet command from a shell prompt in UNIX/Linux or a command prompt in Windows.) a. FTP b. HTTP c. HTTPS d. SMTP e. POP3 Document your findings for each of the services. Repeat this assessment on at
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