cannot access ftp server from outside network

Recently contacted by a project, the customer needs to build an FTP server. The specific requirements are: The system uses Red Hat 6.4 64-bit operating system, create 20 FTP users, these users have their own independent working directory, and upload, download, delete and other permissions, create an FTP administrative

tcp_wrappers = YES // tcp_wrappers is set to yes, the ftp server uses tcp_wrappes as the host access control mode. Tcp_wrappers can implement host address-Based Access Control for network services in linux systems, and hosts in the "/etc" directory. allow and host. two deny

(standeon) by default. 1. Standalone mode. #/Etc/rc. d/init. d/vsftpd start | stop | restart 2. Run in xinetd Mode Change the value of the listen parameter in the vsftpd. conf configuration file to NO. Second, generate a/etc/xinetd. d/vsftpd file with the following content:Service vsftpd{Disable = noSocket_type = streamWait = noUser = rootServer =/usr/sbin/vsftpdPort = 21Log_on_success + = PID HOST DURATIONLog_on_failure + = HOST}The disable item can control the vsftpd service when the xinetd s

automatically perform the time-out resend, therefore the TCP biggest advantage is reliable. General Web page (HTTP), Mail (SMTP), remote connection (Telnet), file (FTP) transfer is used with TCPTCP has a strong vitality in network communications, such as remote Connection (Telnet) and file Transfer (FTP), which require the data to be reliably transmitted over an

machine to check the network availability. Local only Only virtual machines can access each other. virtual machines are not allowed to access any network resources on the physical host. Shared networking (NAT) Note: The shared network mode can only be set to the fir

very convenient, as long as the opening of these two ports on it, but if the client is sharing the Internet, then it is not normal to use FTP, so still not, must be passive mode. In general, the active mode of FTP refers to the server to actively connect the client's data port, passive mode of FTP refers to the

other directories. 18, as shown in Figure 19 Figure 18 Figure 19 4. At this time, note that you need to create a folder named virtual directory under the Home Directory F: \ 01 virtual simulation that provides the FTP site service. Otherwise, the virtual directory cannot provide the FTP sharing service. 20 Figure 20

latter can only be used by anyone with a valid account on the FTP server. 　　 II. Introduction to ProFTPD 　　 Currently, free FTP server software commonly used in UNIX and LINUX is mainly Wu-FTP and ProFTP. Wu-FTP is widely used in

access not only the account's own home directory, but also other users ' directories. As now there is a user Amy. Once the account is established on the FTP server, the operating system automatically creates a home directory for the user in the/home directory, that is, the/home/amy. When the user logs on with this account, the

Linux Network Service -FTP File transfer service I.FTP Connection and transfer mode 1, control connection:TCP, for sending FTP command Information2, data connection:TCP, for uploading, downloading data3, the type of data connection establishment:(1) Active mode: Server actively initiates data connectionThe

-than-necessary firewall between the server and the client: allow FTP clients to connect 21 ports of the FTP server from ports greater than 1024allow the FTP server to respond from port 21 to

Personal FTP site domain Resolution of the complete solution (Super Classic) [text]Integration of the various forums on the creation of FTP and domain name resolution of the essence of the content,The main content from the new dynamic forumAll FTP software download please go to the shooter net=========================================First, the preface1. What is

facilitates the convenience of other employees ' operations. The second is the parameter anon_upload_enable. This parameter indicates whether anonymous users can upload files to the FTP server without anonymous access. In general, this parameter should be set to No. That is, users are not allowed to upload files on anonymous

VSFTPD is the name of a server running on a UNIX-like operating system that can run on top of Linux, BSD, Solaris, HP-UX, and IRIX. It supports features that are not supported by many other FTP servers. Like what: Very High security requirementsBandwidth limitGood scalabilityThe possibility of creating a virtual userIPV6 SupportPerformance on a medium offsetProbability of assigning virtual IPHigh speed VS

complete IIS installation package from the network.] 2. SetAfter the computer restarts, the FTP server starts to run, but some settings are required. Click Start → all programs → Administrative Tools → Internet Information Service. after entering the Internet information service window, IIS has a default FTP site, jus

. Note here that the alias and directory name, and the username 3 must be exactly the same. Test: Here to IP for example, input FTP://192.168.0.16, carriage return, prompt input user and password, enter FTP01 and its password, smooth entry, at this time can only be FTP01 virtual directory, can upload a file, Then look at the server to see which directory is placed in the decision. Similarly, to FTP02 login