In this \"Crypto system to network\" the authors propose a new data encryption algorithm based on private key (symmetric key) cryptography method. The volume of network traffic over the Internet is exponent daily due to increase in communication through E-mails, small branches remotely connect to their corporate network and commercial transactions. Hence protection of networks and their services from unauthorized modification and destruction is very much needed. TCPIP is the most commonly used communication protocol in the Internet domain. IP packets are exchanged between the end hosts as plain text (without any encryption).