You can use the "TCP/IP filter" function to restrict server ports. For individual users, You can restrict all ports because you do not have to allow your machine to provide external services; for external servers that provide network services, we need to open necessary ports (such as WWW port 80, FTP port 21, email service port 25, and 110, all other
You may have heard of many troubleshooting methods for vswitches by Using idle ports of vswitches. The following describes how to use idle ports of vswitches to analyze network traffic, how can we use this method to make it easier for us? The following describes how to troubleshoot a vswitch.
In a switched network, it is often more difficult to troubleshoot a vswitch than to troubleshoot a vro. Although the
In the wdcp background, how to create a website with different ports for Access starts at wdcp2. website access with different ports can be created, such as. Generally, the port of the website is 80 by default, therefore, you do not need to specify it at ordinary times. all accesses are 80, but sometimes you need to use a specific port or use...
In wdcp
How to create a website accessed through different
Continue Exploration and Analysis of JMX listening portsContinue Exploration and Analysis of JMX listening ports
In the previous article, the troubleshooting of "Connection refused to host: 127.0.0.1" in zabbix monitoring tomcat continues to understand the relevant jmx knowledge. After the previous troubleshooting, a new situation was discovered.New Phenomenon
Tomcat listens to five ports
Among them, 51024
1. Installation#cd/usr/ports/net/cvsup#make Install clean2. Modify the CVSup update server#cd/usr/share/examples/cvsup#vi ports-supfile-----------------> with VI edit Ports update server I have a screenshot of Gedit.
Put Change_this. Freebsd.org changed to cvsup.freebsdchina.org, so just change this.
You can now start the cvsup (note that you must restart it
Connection to idle ports and other vswitch Fault Diagnosis technologies to introduce the methods of vswitch fault diagnosis technology. Many people may not know how to optimize the vswitch fault diagnosis technology, after reading this article, you must have gained a lot. I hope this article will teach you more things. The simplest technical method for vswitch fault diagnosis is to connect a monitoring tool, such as a protocol analyzer, to the idle po
In general, we adopt some powerful anti-Black software and firewall to ensure the security of our system. This article proposes a simple method to help you prevent illegal intrusion by limiting ports.
Illegal intrusionIn short, illegal intrusion can be roughly divided into four types:1. Scan the port to attack the host through known System bugs.2. Planting Trojans and using backdoors opened by Trojans to access the host.3. Use Data overflow to force
Registered ports, ports between 1024 and 49151, are listed by the IANA and on most systems can be used by applications or programs executed by users. table C.2 specifies the port used by the server process as its contact port. the IANA registers uses of these ports as a convenience to the Internet community. to the extent possible, these same port assignments are
After SQL Server is installed on the Server, all unused ports need to be blocked and only necessary ports must be opened for the sake of Server security. The following describes the ports used in SQL Server 2008:
First, port 1433 is the most common. This is the port of the database engine. If we want to remotely connect to the database engine, we need to open thi
X86 IO ports and Mmio
The I/O is a channel for CPU and peripheral communication, mainly divided into two types, port I/O, and Mmio (Memory mapping I/O). The is the I/O port that we often call, and it should actually be called the I/O address space. The is accessed through the In/out directive for the x86 schema. The PC architecture has a total of 65,536 8bit I/O ports, consisting of the 64ki
Use FreeBSD ports to easily create a Chinese Desktop System
Author: Liu Ying Hong liu_yinghong@yahoo.com.cnAbstract: As we all know, building a freebsd desktop environment from scratch is a very tedious process, and sometimes you may lose your mind. Based on this, I created port: Chinese/auto-cn-l10n, can greatly simplify this process. Let's introduce the ports maintained by myself, which should also be wi
At present, there are many types of Internet cafe routers with dual WAN ports. Here we mainly introduce two vrouters with good performance for your reference. Yunke Netcore's latest high-performance internet cafe router with 2907NR duwan port has a powerful hardware architecture and provides high-performance packet forwarding. It is an ideal choice for small-and medium-sized Internet cafes and network access devices for small-and medium-sized enterpri
GE switches are still commonly used. So I have studied the full performance solution of the mainstream L2 switches with all-optical ports. I would like to share this with you and hope it will be useful to you. Recently, the F-engine S2200F series all-optical ports, 10-Gigabit L2 switches and F-engine S2200G series all-optical ports, which are independently develo
How to disable ports 135, 139, 445, 593, and 1025 in TCP (record), 5931025
Procedure: Close the port to prevent access to these ports by network viruses, so as to ensure computer security and reduce the impact of viruses on Internet access speed.Recently, we have found that some people are infected with a new network worm, which cannot be eliminated by using the shock wave virus exclusive tool. Please upgra
80 ports were found to be occupied while IIS was adding a Web site, there are two scenarios (a) decommissioning (b) new sites using new ports, such as 8080How to unblock 80 ports? The first thing to find out is which process takes up 80 ports, the following steps:(1) Start-run--cmd Enter the command prompt to enter NET
1. Check the port number based on the process
First, enter cmd.exe In the Startup menu to enter the Command Prompt window. The "tasklist" command will list the processes that are running in the system, and write down or copy the "PID" corresponding to the processes you want to query. For example:
Note that the "PID" of the same process image name is usually not the same each time, so the "PID" number will change once the process is restarted, in this case, you need to review it.
Performance test of LAN switch interface in Flight Tower firewallUnited States flight Tower Fortinet Firewall, the default intranet interface type is hardware exchange, all intranet interfaces share a gateway, the intranet interface allows mutual access, here will be two notes A, B access to the 13, 14 ports to be tested. Notebook A's intranet IP address is set to 10.0.1.28, and the intranet IP address of notebook B is set to 10.0.1.38.Because the in
Tips for enabling ports or running programs on windows server and server
Background: When an application, such as an http application, is deployed on a windows server, when the Internet accesses a webpage through the http protocol, the server must be allowed to access the website, the webpage content can be normally displayed in the visitor's browser. Otherwise, the webpage cannot be displayed normally. The results are similar to the following:
So ho
04-problems that may occur when ports are frequently opened or disabled in Windows
Zheng Yi 20100810 is affiliated with section 07. Miscellaneous
Lao Zhao wrote an article about the problems that occur when Windows frequently opens and closes ports. he tested the MongoDB Database Service in cent OS using TCP connections from Windows Web Server 2008 R2 and ran out of socket connection resources.ProgramRep
We want to view the ports in Windows 2000/xp/server 2003 using the netstat command:
Command format: netstat-a-e-n-o-s
-A indicates that all active TCP connections and the TCP and UDP ports that the computer listens to are displayed.
-E Indicates the number of bytes sent and received by the Ethernet, the number of packets, and so on.
-N indicates that only the address and port number of all active TCP co
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