This paper briefly introduces the Linux system, and puts forward some specific measures to solve the security of the server. It includes five aspects: user rights configuration, system service configuration, firewall configuration, system optimization and log management. In the user configuration, the order strategies of user, password, logout and permissions are proposed; in the service configuration, the solutions of the motherboard, Bluetooth, network interface and storage are put forward; it is proposed that the firewall should be kept open; in the system optimization, the optimization strategies of the swap partition, management interface network and IP logo are proposed; it puts forward a series of commands in the log management. It is hoped that the Linux server security and deployment discussed in this paper can provide reference for practical operation.