Protocol_Name: Kerberos #Protocol Abbreviation if there is one.
Port_Number: 88 #Comma separated if there is more than one.
Protocol_Description: AD Domain Authentication #Protocol Abbreviation Spelled out
Description: Notes for Kerberos
Firstly, Kerberos is an authentication protocol, not authorization. In other words, it allows to identify each user, who provides a secret password, however, it does not validates to which resources or services can this user access.
Kerberos is used in Active Directory. In this platform, Kerberos provides information about the privileges of each user, but it is the responsability of each service to determine if the user has access to its resources.
https://book.hacktricks.xyz/pentesting/pentesting-kerberos-88
Description: Brute Force to get Usernames
Command: nmap -p 88 --script=krb5-enum-users --script-args krb5-enum-users.realm="{Domain_Name}",userdb={Big_Userlist} {IP}
Description: Brute Force with Usernames and Passwords
Note: consider git clonehttps://github.com/ropnop/kerbrute.git ./kerbrute -h
Description: Attempt to get a list of user service principal names
Command: GetUserSPNs.py -request -dc-ip {IP} active.htb/svc_tgs