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28 Cards in this Set
- Front
- Back
- 3rd side (hint)
Port 20
|
TCP: File Transfer Protocol (FTP) data port (active mode)
|
File transfer |
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Port 21
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TCP: File Transfer Protocol (FTP) control port
|
File transfer |
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Port 22
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TCP: Secure Shell (SSH), including Secure Copy (SCP) and Secure File Transfer Protocol (SFTP)
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A secure protocol |
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Port 23
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TCP: Telnet
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Old and insecure |
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Port 25
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TCP: Simple Mail Transfer Protocol (SMTP)
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|
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Port 49
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TCP: Terminal Access Controller Access-Control System+ (TACAS+)
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Remote authentication |
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Port 53
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TCP: Domain Name Service (DNS) name queries,
UDP: DNS zone transfers |
Common resolution |
|
Port 69
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UDP: Trivial File Transfer Protocol (TFTP)
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Used for file transfers |
|
Port 80
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TCP: Hypertext Transfer Protocol (HTTP)
|
Reassess your life choices if you need this hint. |
|
Port 88
|
UDP: Kerberos
|
Authentication protocol |
|
Port 110
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TCP: Post Office Protocol v3 (POP3)
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|
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Port 161
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UDP: Simple Network Management Protocol (SNMP)
|
Network management |
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Port 162
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UDP: Simple Network Management Protocol trap (SNMP trap)
|
Network management |
|
Port 137
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UDP: Network Basic Input/Output System (NetBIOS) (uncommonly also TCP 137)
|
Name resolution |
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Port 138
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UDP: Network Basic Input/Output System (NetBIOS)
|
Name resolution |
|
Port 139
|
TCP: Network Basic Input/Output System (NetBIOS)
|
Name resolution |
|
Port 143
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TCP: Internet Message Access Protocol v4 (IMAP4)
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Port 389
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TCP: Lightweight Directory Access Protocol (LDAP)
|
Active Directory |
|
Port 443
|
TCP: Hypertext Transfer Protocol Secure (HTTPS), also Secure Socket Tunneling Protocol (SSTP) for VPNs
|
A common one and a VPN one |
|
Port 465
|
TCP: Simple Mail Transfer Protocol (SMTP) with SSL or TLS
|
|
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Port 500
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UDP: IPSec component Internet Key Exchange (IKE) for VPN. Encapsulating Security Protocol (ESP) uses "protocol ID number 50".
|
VPN |
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Port 636
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TCP: Lightweight Directory Access Protocol (LDAP) via SSL or TLS
|
Active Directory |
|
Port 993
|
TCP: Internet Message Access Protocol (IMAP) with SSL or TLS
|
|
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Port 995
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TCP: Post Office Protocol (POP) via SSL or TLS
|
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Port 1422
|
TCP: Microsoft SQL Server
|
Database |
|
Port 1701
|
UDP: Layer 2 Tunneling Protocol (L2TP)
|
VPN |
|
Port 1723
|
TCP: Point-to-Point Tunneling Protocol (PPTP)
|
VPN |
|
Port 3389
|
TCP and UDP: Remote Desktop Protocol (RDP)
|
Remote |