FTP

20/21

SSH

22

Telnet

23

SMTP

25

POP3

110

DNS

53

DHCP

67/68

HTTP

80

NetBIOS

137/138/139

IMAP4

143

SNMP

161

LDAP

389

SLP (Mac service finder)

427

HTTPS

443

SMB

445

AFP (Mac file transfer)

548

RDP

3389