Linux how to configure a firewall
First determine the firewall tool used by the system, and then configure it according to the tool: 1. Use sudosystemctlstatusfirewalld to check whether firewalld is running, and if it is not enabled, check iptables or nftables; 2. If using firewalld (such as RHEL/CentOS/Fedora), enable it through sudosystemctlenablefirewalld-now, use firewall-cmd-permanent-add-port to open the port and --reload take effect; 3. If using ufw (such as Ubuntu/Debian), install
Aug 24, 2025 am 10:54 AM
Fixing Random Freezes and Crashes in Windows 10
IfWindows10freezesorcrashes,trythesesteps:1.Installlatestupdates.2.Updateorrollbackdrivers.3.Runmemorydiagnostic.4.RepairsystemfilesusingSFCandDISM.5.Disableoverclocking.6.CheckEventViewerforerrorclues.
Aug 24, 2025 am 10:32 AM
How to partition a hard drive in Windows without formatting
Tocreatenewharddrivepartitionswithoutlosingdata,useWindowsDiskManagementtoshrinkavolumeandcreateunallocatedspace,thensetupanewpartition.Alternatively,usetrustedthird-partytoolslikeEaseUSPartitionMasterformoreflexibility,orusetheCommandPromptwithDiskP
Aug 24, 2025 am 10:31 AM
What to do if Win11 keeps freezing? The solution for Win11 freezing issues
IfyourWindows11systemfrequentlyfreezes,trythesesteps:1.Checkforupdates.2.Scanformalware.3.Updatedrivers.4.Adjustpowersettings.5.Disableunnecessarystartupprograms.6.RunSFCtorepairsystemfiles.
Aug 24, 2025 am 10:28 AM
How to Fix Windows 'UNMOUNTABLE_BOOT_VOLUME' Error
Ifyouencounterthe"UNMOUNTABLE_BOOT_VOLUME"error,trythesesteps:1.UseWindowsStartupRepair.2.RunCHKDSKtofixdiskerrors.3.RebuildtheBootConfigurationData(BCD).4.Checkforfaultyhardwareandreplaceifnecessary.
Aug 24, 2025 am 09:57 AM
How to clean install Win11 from USB
ToperformacleanWindows11installationviaUSB:1.CreateabootableUSBusingMicrosoft’sMediaCreationTool.2.EnterBIOSandsetUSBasprimarybootdevice;ensureSecureBootandTPM2.0areenabled.3.BootfromUSB,launchsetup,andselect"Custom:InstallWindowsonly."4.De
Aug 24, 2025 am 09:50 AM
How to activate Windows 10 Pro for free permanently
ThereisnolegalwaytoactivateWindows10Proforfreepermanentlywithoutagenuinelicense.1.Usingcracks,illegalactivators,orKMStoolsviolatesMicrosoft'slicenseagreementandposessecurityriskslikemalware.2.Theseunauthorizedmethodscancausesysteminstability,blockupd
Aug 24, 2025 am 09:38 AM
How to install a printer on Windows
ConnecttheprinterviaUSB,Wi-Fi,ornetwork,ensuringit’spoweredandproperlylinkedtoyourcomputerornetwork.2.OpenSettings>Devices>Printers&scanners,clickAddaprinterorscanner,andletWindowsdetecttheprinter;iffound,selectitandclickAdddevice.3.Ifautom
Aug 24, 2025 am 09:23 AM
Fix: Icons not showing on the desktop in Windows 11
IfdesktopiconsaremissinginWindows11,trythesesteps:1.Enable"Showdesktopicons"viaright-clickmenu.2.RestartWindowsExplorerinTaskManager.3.CheckiconsettingsinPersonalization.4.Runsfc/scannowtorepairsystemfiles.5.Createanewuserprofiletoruleoutco
Aug 24, 2025 am 09:05 AM
How to Fix Windows 100% Disk Usage in Task Manager
IfyourWindowsPCshows100%diskusageandrunsslow,trythesesteps:1.RestartWindowsExplorerviaTaskManager.2.DisableWindowsSearchandSysMainservices.3.RunDiskCleanuptoremovetemporaryfiles.4.Updateorreinstalldiskdrivers.5.Adjustvirtualmemorysettingsmanually.
Aug 24, 2025 am 08:24 AM
How to Fix Windows 'KERNEL_MODE_HEAP_CORRUPTION' Error
Ifyouencounterthe"KERNEL_MODE_HEAP_CORRUPTION"error,trythesesteps:1.Runsfc/scannowtorepairsystemfiles.2.UseDriverVerifiertodetectfaultydrivers.3.Updateorrollbackdevicedrivers.4.RunWindowsMemoryDiagnostictocheckRAM.5.ScanformalwareusingWindo
Aug 24, 2025 am 08:18 AM
How to Fix Windows Wi-Fi Connected But No Internet Access
IfyourWi-FishowsconnectedbutnointernetonWindows,trythesesteps:1.RunNetworkTroubleshooter.2.RenewIPandflushDNSviaCommandPrompt.3.Disableandre-enabletheWi-Fiadapter.4.UpdateorreinstalltheWi-Fidriver.5.SwitchtoGoogleorCloudflareDNS.6.Resetnetworksetting
Aug 24, 2025 am 08:13 AM
What to do when your Windows taskbar is not working
RestartWindowsExplorerviaTaskManagertorestoreafrozenormissingtaskbar;ifitdoesn’treappear,manuallyrunexplorer.exe.2.CheckforandinstallWindowsupdatesthroughSettingstoresolvebugsaffectingthetaskbar.3.RunSFC/scannowinCommandPromptasAdministratortorepairc
Aug 24, 2025 am 07:45 AM
What to do if Win11 has high memory usage? The solution to fix memory leak issues in Win11
Ifyou'refacinghighmemoryusageonWindows11,followthesesteps:1.CheckTaskManagerformemory-heavyprocesses.2.RunWindowsMemoryDiagnostictodetecthardwareissues.3.UpdateWindowsanddrivers.4.DisabletheSysMainservice.5.Performacleanboottoidentifyconflictingsoftw
Aug 24, 2025 am 07:43 AM
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