Port 88

Q: What is port 88?

Centralized ticket-based authentication (Kerberos) Kerberos on port 88 is the authentication protocol used by Microsoft Active Directory and many Unix/Linux systems. It relies on encrypted tickets issued by a Key Distribution Center (KDC), avoiding the transmission of passwords over the network. A server with port 88 open is most likely an Active Directory Domain Controller. Well-known attack techniques include Pass-the-Ticket, Golden Ticket forgery, and Kerberoasting.

Kerberos

Centralized ticket-based authentication (Kerberos)

Port

Protocol

BOTH

Service

Kerberos

Security

Restricted

Full name: Kerberos Authentication

What is port 88?

Kerberos on port 88 is the authentication protocol used by Microsoft Active Directory and many Unix/Linux systems. It relies on encrypted tickets issued by a Key Distribution Center (KDC), avoiding the transmission of passwords over the network. A server with port 88 open is most likely an Active Directory Domain Controller. Well-known attack techniques include Pass-the-Ticket, Golden Ticket forgery, and Kerberoasting.

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