LDAP/SSL
NetBIOS (a)
SNMP
FTP Data Port (active mode)
SCP (Uses SSH)
IPsec (for VPN with IKE)
PPTP
LDAP/TLS
LDAP
L2TP
HTTP
TFTP
SSH
NetBIOS (b)
POP3
DNS name queries
SMTP
IMAP SSL/TLS
SMTP SSL/TLS
SNMP trap
Telnet
Remote Desktop Protocol (RDP)
Microsoft SQL Server
POP SSL/TLS
TACACS+
Kerberos
SFTP (Uses SSH)
HTTPS
NetBIOS (TCP rarely used)
FTP Control Port
DNS Zone Transfers
IMAP4
TCP 1433
UDP 500
TCP 995
TCP/UDP 137
TCP 80
TCP 22
TCP 389
TCP 22
TCP/UDP 3389
UDP 162
TCP 1723
TCP 636
UDP 88
UDP 53
UDP 161
TCP 25
TCP 443
UDP 69
TCP 22
TCP 139
TCP 993
TCP 49
TCP 20
TCP 21
TCP 23
TCP 636
UDP 138
UDP 1701
TCP 53
TCP 110
TCP 465
TCP 143
