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Difficulty: MediumRemote Access Technologies and Tools

A system administrator is auditing remote management capabilities and network protocols across a corporate environment. Match each remote access technology or protocol to its correct primary technical characteristic or default network port specification.

  • Remote Desktop Protocol (RDP)Operates over TCP port 3389 by default and requires Windows Pro, Enterprise, or Education to host incoming sessions.
  • Secure Shell (SSH)Provides an encrypted command-line session for secure administrative access over TCP port 22.
  • Microsoft Remote Assistance (MSRA)Allows an end user to share their active desktop session interactively with a technician via an invitation file or chat request.
  • TelnetEstablishes an unencrypted, text-based terminal session over TCP port 23 that transmits credentials in clear text.

Answer

Remote Desktop Protocol (RDP) pairs with TCP port 3389 and Windows Pro/Enterprise hosting requirements; Secure Shell (SSH) pairs with encrypted command-line access over TCP port 22; Microsoft Remote Assistance (MSRA) pairs with interactive desktop session sharing via user invitation; Telnet pairs with unencrypted clear-text terminal sessions over TCP port 23.
Each technology is correctly paired with its specific security features, network ports, and OS constraints: Remote Desktop Protocol (RDP) uses port 3389 and requires Windows Pro/Enterprise/Education for incoming host sessions; Secure Shell (SSH) encrypts terminal access on port 22; Microsoft Remote Assistance (MSRA) allows interactive user-invited desktop sharing across Windows editions; Telnet operates unencrypted over port 23.

Step-by-Step Solution

1
Identify the port and Windows edition requirements for Remote Desktop Protocol (RDP).
RDP uses TCP port 3389 and requires a Windows Pro, Enterprise, or Education edition to host incoming connections.
Windows Home edition can initiate RDP outbound connections but lacks the host service component to accept incoming RDP connections.
2
Determine the secure command-line administration protocol.
SSH provides encrypted shell traffic operating over TCP port 22.
SSH replaces unencrypted management protocols to protect administrative credentials across remote shell connections.
3
Differentiate MSRA from traditional incoming RDP host sessions.
MSRA allows interactive screen sharing with user invitation on all Windows editions, including Home.
MSRA relies on explicit user authorization and session sharing rather than establishing an unattended host session.
4
Identify the unencrypted legacy terminal protocol.
Telnet operates on TCP port 23 without encryption.
Telnet transmits all traffic, including username and password credentials, in plain text.

Key Concept

Remote Access Protocols, Port Numbers, and OS Edition Restrictions
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Topics

Remote Access Technologies and Tools

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