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