To configure the Telnet service:
(1) with vi command to edit/etc/hosts.deny file, let go of Telnet login rights control
# Vi/etc/hosts.deny
Sign the line with the "#" note in front of the All:all line.
(2) Edit/etc/hosts.allow file with vi command, release root user login right control
Add a row All:all
(3) Edit/etc/xinetd.d/telnet file with vi command, let go of Telnet
Unregister disable=yes with "#" or modify it to Disble=no
(4) command edit
How to build a secure FTP service on Linux using vsftpd?
FTP (file transfer protocol) is one of the widely used services on the Internet. It is mainly used to transmit files from one host to another. FTP itself was not designed as a security protocol. Because of this, typical FTP
How to build a secure FTP service on Linux using vsftpd?
FTP (file transfer protocol) is one of the widely used services on the Internet. It is mainly used to transmit files from one host to another. FTP itself was not designed as a security protocol. Because of this, typical FTP
port 20, data transmission.
(5) The sub-command data transmission is complete, remove the data connection, end the FTP-DATA process.
(6) The user continues to input the FTP sub-command and repeats the (4) and (5) processes until the user enters the quit command. Both parties remove the control connection, end file transmission, and end the FTP process.
Ii. Insta
: 192.168.122.9Ensure that the IP of the physical machine and the virtual machine can ping each otherFirst check if you have VSFTPD installedrpm -q vsftpdIf it is not installed, if it is installed, display for example vsftpd-3.0.2-10.el7.x86_64Install VSFTPD if not installedyum install -y vsftpdFor example, root privileges are requiredsu rootThen enter the password, for example, set root permissions to succeedThen proceed with the installationyum install -y vsftpdInstallation completed, such as.
Deploying the FTP service in REDHAT5Introduction to the experimental environment:Operating system: Redhat5.8_x64bitExperimental platform: VMware WorkstationOne, anonymous user-based FTP service deployment1. Anonymous FTPaccess to anonymous FTP server does not require a passw
Ftp is essential for every operating system, and RHEL4 is no exception. configuring the ftp service in RHEL4 is a complicated process. The following describes the process in five steps:
1. Configure the basic ftp service in RHEL4The ftp
. View the contents of the/etc/ftpusers file see if there is uftp this user name, if not, just exit. If any, delete the uftp because the user list that is not accessible to the FTP server is logged in this file, remember that sudo service vsftpd restart Restart Services 8. Direct browser access to the FTP://host IP address, log in to the
If you want to allow users to upload or download files in a site, you need to set up FTP on the WEB server. Whether the site is located on an Intranet or on the Internet, using FTP is the same principle for uploading and downloading files in the provided location. You need to place the files in a directory on the FTP server so that users can establish an
FTP service
FTP is short for File Transfer Protocol (file transfer protocol), which belongs to the application layer protocol (port number is usually 21 ), it is used for two-way file transfer over the Internet (that is, file upload and download ). Many servers on the network provide FTP services to store a large numbe
Introduction to FTPFTP is the abbreviation for file Transfer Protocol (document Transfer Protocol), and Chinese is called "Interfax protocol". Used for two-way transmission of control files on the Internet. At the same time, it is also an application (application). There are different FTP applications based on different operating systems, and all of these applications follow the same protocol to transfer files. In the use of
Original address: http://blog.sina.com.cn/s/blog_6cccb1630100q0qg.htmlFTP ServiceFTP is the short name of the file Transfer Protocol (Files Transfer Protocol), which belongs to the application-layer protocol (typically 21 port numbers) for bidirectional file transfers on the Internet (i.e., file uploads and downloads). There are many servers on the network that provide FTP services to hold a large number of files for others to download. The main role
FTP ServiceFTP is the short name of the file Transfer Protocol (Files Transfer Protocol), which belongs to the application-layer protocol (typically 21 port numbers) for bidirectional file transfers on the Internet (i.e., file uploads and downloads). There are many servers on the network that provide FTP services to hold a large number of files for others to download. The main role of the
FTP ServiceFTP is the short name of the file Transfer Protocol (Files Transfer Protocol), which belongs to the application-layer protocol (typically 21 port numbers) for bidirectional file transfers on the Internet (i.e., file uploads and downloads). There are many servers on the network that provide FTP services to hold a large number of files for others to download. The main role of the
Setting the FTP service file transfer protocol (FTP) is one of the most common network services in UNIX. It is quite easy to set up an anonymous server. Some skills are required to set up a virtual FTP host and a separate FTP account. 1. Anonymous
FTPfiletransferprotocol: low cost, cross-platform, cross-public network port: Data Transmission Port 20 Command Transmission port 21 active: by default, the ftp service opens port 21 to accept control commands, the server uses Port 20 to send data (the random port connecting the client is greater than 1024) passive: the ftp Server opens port 21 to accept command
Article Title: Linux: Use vsftpd to build a secure FTP service (figure ). 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 source.
The security risks of the FTP protocol cannot be the reason for the rejection of
connections at a timemax_clients=100Allow up to 3 threads per IP addressMax_per_ip=3Only listens for FTP service requests to access 192.168.0.2 (for native multiple network adapters, multiple IP cases)listen_address=192.168.0.26, after the installation is completed, use the VSFTPD command to start the VSFTPD service. Make sure that the firewall is open to the as
FTP: File Transfer Protocol, Client/Server mode
1. Install WU-FTPD
#rpm -ivh wu-ftpd*.rpm#tar zxvf wu-ftpd*.tar.gz#cd wu-ftp*#./configure#make#make install
If no installation directory is specified, the execution files are installed in/usr/bin and/usr/sbin by default.
2. Start the WU-FTPD
Cd to the/etc/xinetd. d/directory
Open the wu-ftpd file and change disable = yes to disabl
Check if the VSFTPD service is already installedRpm-qa | grep vsftpd650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M00/82/7C/wKiom1dWk_KDXuzrAABHnkNhmRM901.jpg "title=" 2016-06-07_17-28-31.jpg "alt=" Wkiom1dwk_kdxuzraabhnknhmrm901.jpg "/>Does not appear vsftpd-xxx word indicates no installation1. Download the VSFTPD.RPM format installation packageredhat5:http://down.51cto.com/data/2221831Other version: Http://rpmfind.net/linux/rpm2html/search.
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