International Journal of Scientific and Research Publication (IJSRP)
"The internet has instantly evolved into a vast global network in the growing technology. TCP/IP protocol is the basic requirement for the recent time Internet. In TCP/IP proposed a security enhancement. This enhancement adds three modules. These are security policy, security control and data link layer. Security policy belongs to application layer, security control is management located in the transport layer and data security layer located between transport layer and IP layer. Security policy interacts with the system administrator for defining policies and roles of security to be applied in the data communications."