how to use PSRemoting with ip as target

[system.net.dns]::gethostbyname("chenshi.de")

server:

winrm quickconfig
winrm enumerate winrm/config/listener
#winrm delete winrm/config/Listener?Address=*+Transport=HTTP

client:

Set-Item WSMan:\localhost\Client\TrustedHosts -Force -Value server
Get-Item WSMan:\localhost\Client\TrustedHosts
#Clear-Item WSMan:\localhost\Client\TrustedHosts