TRIFECTAPP — PORTS AND PROTOCOLS TROUBLESHOOTING PRACTICE
Version 1.0 | November 7, 2026

START
1. Extract the ZIP into one folder.
2. Open start-here.html in a current web browser. The activity itself works offline.
3. Read the common assumptions, examine each fictional case and choose a rule.
4. Select Check answer for feedback. Change an answer to retry; Reset all choices clears every answer and feedback message. Reloading also clears choices.
5. Fill in rule-worksheet.csv using a spreadsheet or text editor. Compare your reasoning with worked-solutions.html after attempting the cases.

FILES
- start-here.html: the complete offline interactive activity
- scenario-logs.csv: five synthetic deny records, with source and destination fields separated
- rule-worksheet.csv: blank transport, destination-port, direction, reasoning and verification fields
- worked-solutions.html: correct choices, wrong-choice explanations, verification checks and sources; print from your browser if needed
- README.txt: these instructions

SCOPE AND PRIVACY
The activity sends no packets, connects to no real lab and changes no firewall. It has no analytics or answer-submission mechanism. Answer choices are held only in the open page, not in persistent storage. It requires no installation, account or network connection. Opening the external protocol-reference links requires internet access and takes you to those publishers.

The cases, addresses, logs and permitted endpoint scopes are fictional teaching inputs. Source ports are examples of client ephemeral ports, not proposed server destination ports. The FTPS passive range is configured specifically for that case. Preserve required existing rules and the stated TLS requirements. These are not CompTIA exam questions and the number of matching answers is not an exam-readiness or pass prediction.

TECHNICAL SOURCES
DNS TCP support: https://www.rfc-editor.org/rfc/rfc9210.html#section-3
HTTP/3: https://www.rfc-editor.org/rfc/rfc9114.html#section-3.1
SFTP: https://man.openbsd.org/sftp.1
SSH transport: https://www.rfc-editor.org/rfc/rfc4253.html#section-4.1
FTPS data connections: https://www.rfc-editor.org/rfc/rfc4217.html#section-7
Implicit-TLS mail submission: https://www.rfc-editor.org/rfc/rfc8314.html#section-3.3

ATTRIBUTION
Created for Trifectapp. Original teaching scenarios; not official CompTIA exam questions.
Source guide: https://trifectapp.com/security-plus-sy0-801-ports-protocols/
