CompTIA Security+ (SY0-501) - Ports

File Transport Protocol (FTP)

TCP 20, 21

Secure Shell (SSH)

TCP 22

Secure File Transport Protocol (SFTP)

TCP 22

Secure Copy (SCP)

TCP 22

Telnet

TCP 23

Simple Mail Transport Protocol (SMTP)

TCP 25

TACACS+

TCP 49

Domain Name System (DNS)

TCP/UDP 53

Dynamic Host Configuration Protocol (DHCP)

UDP 67, UDP 68

Trivial File Transport Protocol (TFTP)

UDP 69

Hypertext Transfer Protocol (HTTP)

TCP 80

Kerberos

TCP/UDP 88

Post Office Protocol version 3 (POP3)

TCP 110

Network News Transfer Protocol (NNTP)

TCP 119

Network Time Protocol (NTP)

UDP 123

NetBIOS

UDP 137, UDP 138, TCP 139

Internet message access protocol version 4 (IMAP4)

TCP 143

Simple Network Management Protocol (SNMP)

UDP 161

SNMP trap

TCP/UDP 162

Lightweight Directory Access Protocol (LDAP)

TCP/UDP 389

File Transport Protocol Secure (FTPS)

TCP 443

Hypertext Transfer Protocol Secure (HTTPS)

TCP 443

Secure Sockets Layer virtual private network (SSL VPN)

TCP 443

SMTP SSL/TLS

TCP 465

Internet Security Association and Key Management Protocol (ISAKMP VPN)

UDP 500

Syslog

UDP 514

LDAP TLS/SSL

TCP 636

IMAP SSL/TLS

TCP 993

POP SSL/TLS

TCP 995

MS SQL Server

TCP 1433

Layer 2 Tunneling Protocol (L2TP)

UDP 1701

Point-to-Point Tunneling Protocol (PPTP)

TCP/UDP 1723

Remote Desktop Protocol (RDP)

TCP/UDP 3389

Terminal Access Controller Access-Control System (TACACS)

UDP 49