telnet ftp

VPN technology introduction VPN, Virtual Private Network (Virtual Private Network), is defined as a temporary, secure connection through a public Network (usually the Internet, is a secure and stable tunnel through the public network. Virtual

Well written linux study notes linux Directory Architecture/root directory/bin commonly used commands binaryfile contents? /Boot stores files that must be read during system startup, including/boot/grub/menu including the core (kernel. lstGRUB

1, Environment: FTP for VSFTP. The user named Ftpuser is restricted. The restricted path is/home/ftpuser2, build the user, the command line state, under the root user:Run command: "useradd-d/home/ftpuser Ftpuser"//Add user Ftpuser and make Ftpuser

Cookie vs SessionExcerpt from: cookie/session mechanism explanation Common session tracking techniques are cookies and sessions. 1. Cookies determine the user identity by logging information on the client, session by recording information on the

Tcp/ip1. Basic conceptsWhy would there be TCP/IP ProtocolAll over the world, a wide variety of computers run their own different operating systems for everyone, and these computers are used in many ways when expressing the same message. It is as if

Why is there a TCP/IP protocolAll over the world, a wide variety of computers run their own different operating systems for everyone, and these computers are used in many ways when expressing the same message. It is as if God in the Bible has

Recently in the reading of TCP/IP, here are some simple summary introductions, first introduce some concepts:TCP/IP protocol model : the TCP/IP model is a generic term for a series of network protocols that are designed to allow information exchange

-R continues to crack based on last progress-S Connect using SSL protocol-s Specify Port-L Specify user name-L Specify User name dictionary (file)-p Specify password cracking-P Specify the password dictionary (file)-e-null password detection and

IPThe IP layer (the network layer) receives packets sent by the lower layer (network interface layers, such as Ethernet device drivers) and sends the packet to a higher level---TCP or UDP layer (transport layer), whereas the IP layer transmits

Summary of teaching material Contents 1. Review of basic knowledgeThrough learning the content of teaching materials, master the basic operating mode of the website, and understand its structure way. Such as:The process is: first, the client sends

recently, in the deployment of the relevant DNS system services for the company's customers, for resource scheduling services, but the customer export lack of public IP address, can not easily manage this server, began to think of using teamviewer

The origin of/usr and the/USR directory structureThis article turns from delectat.comIn the discussion, most of the points were that: USR is the abbreviation for UNIX system resources; USR is the user's abbreviation; USR is the

hydra:http://www.thc.org/releases/hydra-7.3.tar.gz# tar zxvf hydra-7.0-src.tar.gz# cd hydra-7.0-src#./configure# make# make Installhydra supports GUI graphical interface, but the habit is still good command. Iii. parameter Description Hydra [[[-L

1. The reference model of Iso/osi has 7 layers , from low to high level: physical layer, Data link layer, network layer, transport layer, Session layer, presentation layer ,Application Layer . The functions of each layer are:(1) Physical layer

First, briefBefore learning computer network in school when learning is the Network 7 layer model OSI, understand some basic computer network concepts and protocol communication format, but have not figured out the principle, including the

The role of each layer of the OSI Reference ModelPhysical layer: Transmits the raw data bitstream on the physical media.Data Link layer: Divides data into data frames and transmits them in a data frame. There should be a reply, the wrong

1) The link layer, sometimes referred to as the data link layer or the network interface layer, usually includes the device drivers in the operating system and the corresponding network interface cards in the computer. They work together with the

following previous article on "Debian+nginx configuration--php Environment, reverse proxy and load balancing " after the success, a little excited, and finally do not have the whole LVS so complex to fix the load, but there are many concepts did not

I. Common directives and permission directives ①, von Neumann architecture ②, Environment variables ③, Linux file types, Linux extensions, how Linux shell commands work, Linux Rights Management ④, Instructions: A. Installation and login commands:

Article title: network service configuration in redhat7.1. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open