Port
Port 69 — TFTP
Port 69 (UDP) is used by TFTP. Trivial FTP — simple, no-authentication file transfer, used for IOS images and configs.
Port 69 at a glance
| Property | Value |
|---|---|
| Port number | 69 |
| Transport | UDP |
| Service | TFTP |
| Category | Well-known port |
What it is used for
Trivial FTP — simple, no-authentication file transfer, used for IOS images and configs.
Security considerations
No authentication or encryption. Use only on trusted management segments.
See our full TCP/UDP port reference and learn how firewalls filter ports in the CyberOps course.
Frequently asked questions
What is port 69 used for?
Port 69 (UDP) is used by TFTP. Trivial FTP — simple, no-authentication file transfer, used for IOS images and configs.
Is port 69 TCP or UDP?
Port 69 uses UDP.
Is it safe to open port 69?
No authentication or encryption. Use only on trusted management segments.
Related
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