Centos7 closes and restarts the system firewall and opens firewall ports
ThedefaultfirewalloftheLinuxsysteminstalledbysomepeopleisnotiptables,butfirewall,thenthefirewallmust...
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Debian system installation yum command
IrecentlytriedDebian,loggedinwiththerootuser,andwhenIexecutedtheyumcommand,Iwasprompted:yum:commandn...
Several common server port numbers and corresponding services are organized
Consideringthesecurityoftheserver,weseethatmostoftheservershaveamandatorysecuritygroup,andthecorresp...
How does CentOS7 open/view ports?
WhenconnectingtotheserverviaSSH,firstcheckwhetherthefirewallisenabled.Viewfirewallstatus:systemctlst...
How To Install Plesk Panel on Ubuntu 20.04 Server？
Pleskisaweb-basedcontrolpanel.Generally,whenwepurchaseanduseoverseaswebhostingorservers(suchasUSserv...
How to solve the Windows 10 prompt "The built-in administrator cannot activate this application"?
In the process of using a win10 computer, you may encounter a system prompting "the built-in administrator cannot activate this application". How to solve this situation? Let's take a look at the detailed solution below. When the same problem occurs, there is no need to panic.