


In the Windows AD domain environment, how to use the Kerberos protocol to achieve automatic login of web applications?
Apr 02, 2025 am 11:06 AMUse Kerberos to achieve automatic login of web applications in Windows AD domain environment
This article introduces how to use the Kerberos protocol to achieve seamless and automatic login of web applications in the Windows Active Directory domain environment, and focuses on the Web server scenarios developed using Go and Node.js. We assume that you already have a Windows AD domain and have mastered the method of exporting keytab files from the domain.
The following answers address the key questions raised in the article:
setspn
command execution location: Thesetspn
command must be run on the Windows domain controller. This is because the service principal name (SPN) is stored in the domain controller's Active Directory database and is used to associate the service with Kerberos credentials. The client machine does not have permission to directly modify the domain controller database.Host name in SPN: In the command
setspn -A HTTP/host.domain.local domain\\user
,host.domain.local
represents the fully qualified domain name (FQDN) of the web application server. It explicitly identifies the server that provides HTTP services.Go Web server-side Kerberos library: Go language
jcmturner/gokrb5
library is a powerful Kerberos client library that handles the details of Kerberos authentication, such as obtaining and verifying tickets. Go web servers do not need to use Kerberos command line tools (such askinit
). Thegokrb5
library will do this for you.Go Web Server Deployment Location: The Go Web Server does not have to be deployed on a domain-joined Windows machine. It can be deployed on any machine that has access to a domain controller and uses the Kerberos library, including Linux machines. This is the advantage of using cross-platform libraries such as
jcmturner/gokrb5
. Make sure your server can resolve domain names and communicate with the domain controller network.
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