active mode

Note: ①ftp monitor two ports: Control port 21 and data port 20② Two modes of operation: Active mode and passive modeActive mode:Client to connect to the FTP server, the client will randomly open a port greater than 1024, to connect the FTP server

The applicable scenario of the MySQL master-slave architecture is read/write splitting, which reads data from the master database. In most scenarios, there are many read cases, the single master multi-slave architecture can solve the problem of high

Zabbix is a web-based interface to provide distributed system monitoring and network monitoring capabilities of the enterprise-class openSource solution.Zabbix consists of 2 parts, Zabbix server and optional Components Zabbix agent.Zabbix supports

This article takes the CentOS 6.7 x86_64 system as an example, the environment is the new system which just completes.Zabbix-agent End Environmental Inspection[[email protected] ~]# cat /etc/redhat-releasecentos  release 6.7  (Final)

Alarm problem:Too many processes onZabbix Poller processes more than 75% busyZabbix unreachable Poller processes more than 75% busy1. The device that collects the data through the Zabbix agent is in the moniting state but at this time the machine

FTP (file Transfer Protocol) is a protocol used to transfer files from one host to another. The FTP service can operate in both active mode and passive mode. Active mode: The FTP client connects to the FTP server's 21 port request via a

Prior to testing the deployment of OEMCC 13.2 stand-alone, specific reference before the essay: OEMCC 13.2 Installation Deployment Environment: two hosts, System Rhel 6.5, respectively deployed OMS and OMR:OMS, which is OEMCC's server

Recently, the company received a requirement: A department needs to share files with different vendors, which are not shared between vendors (via FTP).FTP Account requirements: A Department of an internal account, the supplier of an external account,

Iptables learning 03 port forwarding two network interfaces: Lan port: 10.1.1.254/24eth0, Wan port: 60.1.1.1/24eth1Lan webserver: 10.1.1.1: 80, Lan ftpserver: 10.1.1.2: 21: port forwarding to internal servers for internet user access... iptables

Linux servers have the following features: low cost, excellent performance, and open code. More and more enterprises are preparing or adopting Linux to take on the important responsibilities of enterprise application servers. This article describes

--Iptables--1. packet filtering FirewallPacket selection at the network layer mainly filters the protocol, port, source address and target address used by the data packet.2. Proxy GatewayThe Intranet and the Internet are completely isolated. Direct

[Background] The xceedftp FTP component is used in our project to download data. However, due to the large number of files, the cards may die from time to time during each download process, If no exception is thrown, It is stuck in the

Nagios's function is to monitor the service and host, but it does not include this part of the function, all monitoring, detection functions are through a variety of plug-ins to complete. After you start Nagios, it periodically calls the plugin to

first, the Origin2012, it's been a bad year. Lost his job and stayed at home for 4 months before finding a job until 2013. 4 months, said not long, said short is not short, the complex, the mood is difficult to calm. 2012, the IT industry outlook

Lab Environment Virtual Machine CentOS 6.5ipaddr=192.168.1.224Installing VSFTPDYum-y Install VSFTPDConfiguration file:Vim/etc/vsftpd/vsftpd.confView ports[Email protected] ~]# NETSTAT-ANP |grep vsftpdTCP 0 0 0.0.0.0:21 0.0.0.0:* LISTEN

View System version: Lab_release-aFirst, configure the Zabbix software download source# wget Http://repo.zabbix.com/zabbix/3.0/ubuntu/pool/main/z/zabbix-release/zabbix-release_3.0-1+trusty_all.deb # dpkg-i Zabbix-release_3.0-1+trusty_all.deb#

VSFTP is an abbreviation for very secure FTP. It is divided into active mode and passive mode, and the port is divided into command port (21) and data port.In active mode: 1. The client opens a command channel with a random port x greater than 1024

Set Serv-u FTP to support passive mode connections Early in the morning by a friend said FTP never even go up, I remove the passive mode can connect. This problem has been bothering me for a long time, which is the following article to solve it.

The FTP service was established with the VSFTP software on the server, but the following error message service occurred while using the Fillazilla client to connect to the ftp: The code is as follows Copy Code

FTP typical C/s structure of the Application layer protocol, need to have server software and client software two parts together to achieve file transfer function. 1, FTP connection and transmission mode The FTP server uses the TCP protocol's 20, 2