Explanation should include
- ports
- 21 – File Transfer Protocol (FTP)
- 22 – Secure Shell (SSH)
- 23 – telecommunications network (TELNET)
- 25 – Simple Mail Transfer Protocol (SMTP)
- 53 – DNS
- 80 – Hypertext Transfer Protocol (HTTP)
- 110 – Post Office Protocol 3 (POP3)
- 143 – Internet Mail Access Protocol (IMAP)
- 443 – Hypertext Transfer Protocol over Secure Sockets Layer (HTTPS)
- 3389 – Remote Desktop Protocol (RDP)
- 137-139 – NetBIOS/NetBIOS over TCP/IP (NetBT)
- 445 – Server Message Block/Common Internet File System (SMB/CIFS)
- 427 – Service Location Protocol (SLP)
- 548 – AppleTalk Filing Protocol (AFP)
- protocols
- DHCP
- DNS
- Lightweight Directory Access Protocol (LDAP)
- SNMP
- SMB
- CIFS
- SSH
- AFP
- TCP vs. UDP.
Process/Skill Questions:
- What is the major advantage of using port 443 rather than port 80 for web browsing?
- What are the commonly used port numbers for email and their purposes?
- What are the similarities and differences between TCP and UDP?
- What is the benefit of SSH compared to FTP?