Network Security

Security on the wired LAN will be lost when the network cable cut or ditap. While the wireless LAN, security will be lost if the data is sent without any protection method. Prevention of performance in wireless data can be done by using an encryption method or a method of spread spectrum transmission. Security can also be done by using the identification and validation terminals that will access the system. Without security control, access, such as jamming packet access, airborne viruses, tapping, etc., may occur and not be detected by the bottom layer of the OSI (physical and data link).