Ports/Protocols: Authentication

Question 1

AUTHENTICATION

Kerberos

• UDP 88

TACACS+ (Terminal Access Controller Access-Control System Plus)

• TCP 49

Radius (Remote Authentication Dial-In User Service)

• UDP 1812

LDAP (Lightweight Directory Access Protocol)

• TCP 389 (unencrypted)

sLDAP (secure Lightweight Access Protocol)

• TCP 636 (encrypted with TLS)

Answer 1

AUTHENTICATION

Kerberos

• UDP 88

TACACS+ (Terminal Access Controller Access-Control System Plus)

• TCP 49

Radius (Remote Authentication Dial-In User Service)

• UDP 1812

LDAP (Lightweight Directory Access Protocol)

• TCP 389 (unencrypted)

sLDAP (secure Lightweight Access Protocol)

• TCP 636 (encrypted with TLS)

Question 2

Kerberos

Answer 2

UDP 88

(User Datagram Protocol)

Question 3

TACACS+ (Terminal Access Controller Access-Control System Plus)

Answer 3

TCP 49

(Transmission Control Protocol)

Question 4

Radius (Remote Authentication Dial-In User Service)

Answer 4

UDP 1812

(User Datagram Protocol)

Question 5

LDAP (Lightweight Directory Access Protocol)

Answer 5

TCP 389 (unencrypted)

(Transmission Control Protocol)

Question 6

sLDAP (secure Lightweight Access Protocol)

Answer 6

TCP 636 (encrypted with TLS)

(Transmission Control Protocol)