active mode

Chapter I. EMCProduct Introduction1.1.Noun Introductiondae--disk cage. The cabinet used to mount the disk.Disk Processor enclosure--a controller unit with disks. The main equipment of the storage system, including the system disk, controller, power

Recently saw a classmate in order to enhance the mobile phone GPS signal, the antenna DIY to the outside, pulled a very long antenna, their own in the suspicion that this is in line with the principle of antenna design, can really make the signal

IPS (Intrusion prevention system) and WAF (Web Application Protection system) Two products have different usage scenarios, with the complexity of web application development, security requirements are increasing, the emergence of WAF is in

  Part 1: TheoryI. Basic principles of FTP servers1. Basic Concept: ftp file Transfer protocol: file transport protocol2. Transmission Mode: Active Mode and passive mode3. Use port A. Active Mode: Command Control: 21 data transmission: 20B. Passive

Mysql master-slave replication principle and Configuration1 copy Overview The built-in replication function of Mysql is the basis for building large and high-performance applications. This distribution mechanism replicates data from a Mysql host to

Zabbix basic functions User Manual In the previous article, I installed zabbix server and zabbix agent on the same host (see). Now, how can I configure zabbix server to monitor myself. Run vim/etc/zabbix/zabbix_agentd.conf to edit the agent

System Environment: centos-6.5Server: ThinkserverKnowledge Literacy:NEW: This bag is the first package we've seen.Established: A connection to change from new to established, only need to receive the answer packet, whether the package is destined

1. Overview of Replication 1.1 problems solved by ReplicationData replication technology has the following features:(1) Data Distribution(2) load balancing)(3) backup(4) high availability and fault tolerance 1.2 How replication worksFrom a

How Nagios WorksNagios functions as a monitoring service and host. But its own well does not include this part of the function. All the monitoring and testing functions are done by various plugins. After the Nagios is started, it periodically

Nagios is a popular computer system and network monitoring program that detects hosts and services and alerts users when an exception occurs and is released. It is open source software developed based on GPLV2 and is available for free and use.How

What's a 0.vsftpd thing?Do not know what to install a thing, it is not interesting, so first to understand what is vsftpd. VSFTPD means "very secure FTP daemon (very secure FTP process)" and of course only more security is not the safest.So where

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)

1.FTP Connection and Transfer mode the FTP server uses the TCP protocol's 20,21 port to communicate with the client by default. The 20 port is used to establish a data connection and transfer file data; 21 ports are used to establish a control

1. Linux Mount Winodws shared folder# mount-t CIFS//1.1.1.254/ok/var/tmp/share/-o username=administrator,password=yourpass2. View the number of concurrent requests for HTTP and their TCP connection status:netstat-n | awk '/^tcp/{++s[$NF]} END {for

Content:1. FTP protocol2, the construction and configuration of VSFTPDFirst, the FTP protocol1. FTP protocol:FTP is the abbreviation for file Transfer Protocol (document Transfer Protocol), and Chinese is called "Interfax protocol". Works on the

Most switches will have a self-diagnosis function. When the switch or switch port fails for some reason, the indicator is used to inform the administrator of the error. However, there are times when the switch can be diagnosed incorrectly. If the

1, user settings, FTP settings, IP restrictions, etc. are set under the menu. 2, user settings are also very simple, look at the picture can understand. 3. If you cannot connect to the FTP server, check the firewall on your server.

Knowledge Point Analysis: NFC (Near Field communication) is close-range wireless communication technology. Developed by Philips and Sony, NFC is a non-contact identification and interconnection technology that enables close wireless communication

VSFTPD configuration instructions, and 553 could not create file. Error ResolutionUpdate Time: 2011-11-10 11:15:46 Source: Unknown Author: goldpony Click: 181 times vsftp File and directory/usr/sbin/vsftp vsftp main program/etc/rc.d/init.d/vsftp

Iptables is an excellent nat+ firewall tool under Linux, I use this tool to configure a flexible and strong firewall +nat system with the lower configuration of traditional PC, small have experience, see the Internet also have a lot of this article,