Port 69 — TFTP (Trivial File Transfer Protocol)
Port 69 is the UDP port for TFTP, an unauthenticated, bare-bones file transfer protocol used primarily for PXE network booting, VoIP phone firmware provisioning, and network router backups.
69
UDP
tftpd, in.tftpd, dnsmasq
69/udp
Instant Terminal Fixes for Port 69
sudo ss -ulpn | grep ":69 "sudo systemctl stop tftpd-hpa || sudo killall in.tftpdsudo ufw allow 69/udpGet-NetUDPEndpoint -LocalPort 69Stop-Service -Name tftpd32 -Force -ErrorAction SilentlyContinuedocker run -d -p 69:69/udp -v /tftpboot:/var/tftpboot ghcr.io/linuxserver/tftpCommon Error Encountered
TFTP error: Access violation / Transfer timed out on port 69.
Security Advisory & Hardening
TFTP has no user authentication or encryption. Any device on the subnet can read or write files. Restrict to dedicated management VLANs.
Port 69 Questions & Answers
Common questions regarding default services, kill commands, and firewall configurations.
Port 69 is commonly used for TFTP (Trivial File Transfer Protocol). Port 69 is the UDP port for TFTP, an unauthenticated, bare-bones file transfer protocol used primarily for PXE network booting, VoIP phone firmware provisioning, and network router backups.