The computer ports are as follows:
0 Port: Invalid port, typically used to analyze operating system
1 Port: Transmission Control Protocol port Service multi-Switch Selector
2 Port: Management utility
3 Port: Compression process
5 Port: Remote
[Original] FTP Protocol Security Analysis
-------------------------------------------------------------------------------- FTP Protocol Security AnalysisAuthor: Xinhe
PrefaceFile Transfer Protocol (FTP) is one of the common protocols on the Internet.
I. Installation, start-up and shutdown of VSFTPD services1, installation vsftpd[[email protected] bdump]# Yum Install vsftpd--You must configure the Yum source to install vsftpd using the Yum command, or mount the disc, locate the packages package
FTP protocol
1. File Transfer
The file transmission service is an essential service for the Network Interconnection Environment. Currently, the most important transmission mode for file transmission in the network is the FTP protocol.
1024 The following is reserved for the system, and from 1024-65535 is used by the userFor personal writing applications, try not to use a port number between 0 and 1024.1024 to 65535 we can program with. This is not a Linux rule, it is the socket
Install and set up yum install vsftpd on the FTP server vsftpd 2. start/restart/Close the vsftpd server [root @ localhost ftp] #/sbin/service vsftpd restartShutting down vsftpd: [OK] Starting vsftpd for vsftpd: [OK] OK indicates that the restart is
Yum install vsftpd
2. Start/restart/shut down the vsftpd Server[Root @ localhost FTP] #/sbin/service vsftpd restartShutting down vsftpd: [OK]Starting vsftpd For vsftpd: [OK]OK indicates that the restart is successful.Change restart to start/stop for
I. PrefaceVsftp (Very Secure FTP) is a Secure, fast, and stable FTP server in Unix/Linux. There are three ways to implement Vsftpd: 1. Anonymous user mode: by default, the system only provides anonymous user access 2. Local User Mode: use the
ping command and network port:1.Ping 127.0.0.1127.0.0.1 is the local circular address, ping General instructions that the TCP/IP protocol works properly, otherwise TCP/IP is not normal.2.Ping IP address for this computerUse the ipconfig command to
Address: http://www.c-sharpcorner.com/UploadFile/neo_matrix/SimpleFTP01172007082222AM/SimpleFTP.aspx[Source code download]
. NET 2.0 (C #) Simple FTP applicationProgram
Original article released on: 2007.01.18Author: Neo MatrixTranslation:
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.