active mode

Zabbix proxy is a monitoring proxy server that can implement centralized or distributed monitoring. Proxy proxy can be used to monitor multiple nodes, across regions, and hundreds of thousands of servers. Proxy proxy is mainly applicable to the

Usepassive-specifies whether the active or passive mode is used. Earlier, all clients used active mode and work well. Now, due to the existence of the Client Firewall, some ports will be closed,In this way, the active mode will fail. In this case,

Redis is a widely used key-value memory database. Like memecached, keys can be set to a life cycle. Setting the key expiration time in redis is very simple: SETEXmykey10Hello sets a 10-Second Life Cycle for mykey. However, when you use other redis

Understanding and collecting evidence: How the dynamic negotiation mechanism of Ethernet channels works Understanding and collecting evidence: How the dynamic negotiation mechanism of Ethernet channels works Obtained from the trial version of Cisco

FTP is a TCP-based service that uses 2 ports, a data port, and a command port (also called a control port). Usually the command port is 21, and the data port is 20.Why fix two ports and fix one why not?1. Two modes of operation (primary not active

In the official latest Zabbix 2.4 distributed architecture, there is no support in addition to node mode.I also used node in the 2.x version of the multi-tier distributed node mode has been repeatedly encountered in the server configuration

1. It has been configured to surf the Internet, so you can install it via the Yum install VSFTPD. If you cannot access the Internet, you can install it via the Dvd2.iso tool set RPM method.2. After installation, the default local can be logged on by

IntroductionCompared with 1.x, Microsoft's. net framework 2.0 adds FTP support. In the past, in order to meet my needs, I did not want to use third-party class libraries to implement FTP functions. However, for reliability, it is better to use. net

Zabbix Agent automatic and active registration Brief description: Let's take a look at the active registration function of Zabbix today. When you have ten machines to monitor, you can add them manually. But what do you do when you have 50, hundreds,

The Nagios plug-in provides two return values: one is the plug-in exit status code and the other is the first line of data that the plugin prints on the console. Exit status codes can be used by Nagios main programAs the basis for judging the

FTP protocol /FTP Protocol FTP is all called file Transfer Protocol (Files Transfer Protocol), commonly used in the Internet to control the two-way transmission of files, commonly used operations are uploaded and downloaded. Based on TCP/IP, based

The general process of implementing FTP function in FtpWebRequest class1, create a FtpWebRequest object, point to the FTP server URI 2, set the FTP implementation method (upload, download, etc.) 3. Set properties for FtpWebRequest objects (whether

Command: MLSDError: Connection timeoutError: Failed to read directory list When debugging the FTP function of cpanel, the discovery always fails, do not know what is going on.FTP client: FileZilla The above error occurs mainly because: FileZilla

Program This article uses. NET 2.0 (C #) to implement general FTP functionality IntroducedMicrosoft's. NET Framework 2.0 has increased support for FTP relative to 1.x. In the past, in order to meet my needs, I did not use a Third-party class library

Because the service is too many, so the corresponding port is also many, here only some of the commonly used services and the corresponding port to do a simple description, the order is small to large arrangement, each of the "Port type: Port number"

? File Transfer Protocol: Files Transfer protocol is a set of standard protocols for file transfer over a network, using client/server mode. It belongs to the application layer of the Network transport protocol.Server side: VSFTPDClient:

First, the FTP working principle(1) FTP use port[Email protected] ~]# Cat/etc/services | grep ftpftp-data 20/tcp #数据链路: Port 20ftp 21/tcp #控制链路: Port 21(2) FTP connection modeTwo connection modes are supported: Active mode (Port) and

1. Working principle: ZabbixproxyIt is a monitoring proxy server that collects monitoring data and stores the data in the buffer zone. The storage time can be set through the configuration file and then transmitted to Zabbixserver. The monitoring

Vsftpd is the most popular FTP server program in the Linux release. Features: small, light, secure, and easy to use. The name of vsftpd stands for "verysecureFTPdaemon". Security is one of the top concerns of its developer ChrisEvans. At the

First of all, for the theory of literacy, you need to understand ha what it is and whether it is similar to other high availability, not much to say. You can look down.Juniper-netscreen os ha High availability configuration HA