This is because you want to use Navicat to connect to the database and find that the connection is notBy looking at a lot of data and testing multiple times to find out because the firewall is not configured with Port 3306Words don't say, open the whole, similarly, 80 port is also configured, first enter the firewall configuration fileshell># Vim/etc/sysconfig/ip
SVN open firewall port introduction, svn firewall portPreface
Due to the previous laziness, the firewall was shut down after the server was installed with svn. Recently, the server was told to show signs of virus, so the Firewall should be enabled, however, opening the firewall will lead to svn access failure, so now there is a new requirement to open the svn ser
Vi/etc/sysconfig/iptables-A input-m state–state new-m tcp-p tcp–dport 80-j ACCEPT (allow 80 ports through the firewall)-A input-m state–state new-m tcp-p tcp–dport 3306-j ACCEPT (Allow 3306 ports through the firewall)Special Tips:Many netizens add these two rules to the last line of the firewall configuration, causing the firewall to fail to start, the correct one should be added to the default port 22 below the ruleAfter adding the firewall rules as
Vi/etc/sysconfig/iptables-A input-m state–state new-m tcp-p tcp–dport 80-j ACCEPT (allow 80 ports through the firewall)-A input-m state–state new-m tcp-p tcp–dport 3306-j ACCEPT (Allow 3306 ports through the firewall)Special Note: Many netizens add these two rules to the last line of the firewall configuration, causing the firewall to fail to start, the correct one should be added to the default 22 port under this ruleAfter adding the firewall rules a
If you are using the cloud server when the site appears to not open the situation, then most of the VPS 80 port is not open or blocked, then CentOS to open the VPS 80 port it? Need to open through the firewall, the specific with t
other three ports are pulled up internally). When we want to use the input function, we only need to set the output port to 1, which is equivalent to disconnecting the switch, for P0 port, it is a high-impedance state.What is open circuit (OD )?For open-circuit (OD) output, the output is very similar to that of
Tags: solution recommended range Ice SQL PHP sys stop two kindsOnly 22 ports are opened when the system is loaded. The site cannot be accessed after the Nginx+php+mysql is loaded.Iptables-l-NView firewall settings Discovery does not turn on port 80Because the Linux firewall is turned off by default. There are two ways, one is to turn off the firewall, and the other is to let the firewall open the port.To tu
1. Windows open portnetsh firewall add portopening TCP 8080 Mywebport2. Delete Portnetsh firewall delete portopening protocol=tcp port=33893. mysql Open remote linkCD C:\Program files\mysql\mysql Server 5.6\binC:\Program files\mysql\mysql Server 5.6\bin>mysql-u root-pEnter the following command to open the remote conne
Problem description:
DOS: view the services opened by the system's network connection
Solution:
(1) DOS Viewing System network connection opening port
Note:
Run the netstat command to view the opened ports.
(2) view and close the process opened by the System
Note:
Taskkill/pid/F port can be used to close the port of the specified PID
Note:
Tasklis
See how much the FTP default port is
Sometimes we need to look at the default port for a service, it's good to do under Linux, no need to search the Internet, the direct view of the "/etc/server" file can meet the demand. There is a mapping between the port number and the service.
For example, we'd like to see the port
Open a port in Windows Firewall
If the Windows Firewall blocks a program and you want to allow the program to communicate through the firewallSelect this program in the list of programs allowed by Windows Firewall (also known as the "exception List. To learn how to perform this operation, seeWindows Firewall for communication.
However, if the program is not listed, you may need to
Open the local MYSQL server port and the mysql server port
Sometimes someone else needs to connect to your database. At this time, you need to open the database port so that other hosts can connect to it. The steps are as follows:
1. O
Centos7 uses the firewall: lt; 1 gt; for example, to query whether port 9200 is opened by the following command: firewall-cmd -- query-port = 9200/tcp, return yes, indicating to open lt; 2 gt; run the following command to open port 9300: firewall-cmd -- add-p
Centos 7 ad
1 with 8080 ports for testing, first vi/etc/sysconfig/iptables open 080 ports
Firewall 8080 Port:-A input-m State--state new-m tcp-p TCP--dport 8080-j ACCEPT
2 Reboot Firewall command: Service iptables restart
View firewall Status: Iptables-l-N
3 Telnet test 22 and 8080 ports, the results are as follows
Command
telnet localhost 22
telnet localhost 8080
As shown in the figure above, a very strange pro
Vi/etc/sysconfig/iptables-A input-m state–state new-m tcp-p tcp–dport 80-j ACCEPT (allow 80 ports through the firewall)-A input-m state–state new-m tcp-p tcp–dport 3306-j ACCEPT (Allow 3306 ports through the firewall)Special tips:Many netizens add these two rules to the last line of the firewall configuration, causing the firewall to fail to start, the correct one should be added to the default port 22 below the ruleAfter adding the firewall rules
Open System port number
A./sbin/iptables-i input-p TCP--dport 8181-j ACCEPT
B./etc/rc.d/init.d/iptables Save
C. The status of the port can be viewed through the following command:
/etc/init.d/iptables status
[Root@localhost qpid]#/etc/init.d/iptables StatusTable:filterChain INPUT (Policy ACCEPT)Num Target prot opt source destination1 ACCEPT TCP--0.0.0.0/0 0.
typically not fixed to a service, which means that many services can use these ports. As long as the running program makes a request to the system to access the network, the system can allocate one from these port numbers for the program to use. For example, port 1024 is assigned to the first program to send a request to the system. After the program process is closed, the
Tags: netstat TPS state pad extranet Restart making fir inputExample:The steps to open port 10000 are as follows:1, modify the/etc/sysconfig/iptables file, add the following line:-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 10000-j ACCEPTRestart IptablesService Iptables Restart2, restart the firewall, there are two ways to restart the firewallA) effective after rebootOpen: Chkconfig iptables
every port of the system, the solution is the so-called service, you provide these services, then you must open the port (toilet), when someone is on the toilet, it is on these ports to establish a link. If the toilet is occupied, it means that the port number is occupied by the service, if one day there is no public
This article mainly introduces how to view the system network connection open port, open service and so on in DOS
Problem Description:
DOS View system network connection open port, open service
Problem solving:
(1) DOS View sy
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.