FTPMonitor / Guides / SFTP connection timeout

SFTP connection timeout

Why SFTP connections timeout and how to troubleshoot firewall or network issues.

Diagnose this automatically

Test whether the network port is reachable before investigating authentication problems.

terminal

npx ftpmonitor check --protocol sftp --host sftp.example.com --port 22

Shareable output

terminal

npx ftpmonitor check --protocol sftp --host sftp.example.com --port 22 --format slack --copy

SFTP timeouts occur when the SSH connection cannot be established or the server does not respond.

Common causes

ECONNREFUSED on port 22 — Meaning of ECONNREFUSED for SFTP/SSH on port 22 and the fastest ways to isolate firewall vs service vs wrong port.
SFTP connection refused — What “connection refused” means for SFTP and how to fix port/service/firewall issues quickly.
SFTP connection reset — Why SSH/SFTP sessions reset unexpectedly and how to diagnose network or server issues.
SFTP port 22 blocked — Why port 22 blocks SFTP access and how to fix firewall or security group rules.
TCP connection timeout (firewall issue) — Why FTP/SFTP connections time out and how to diagnose firewall, routing, or allowlist blocking.
TCP connection failed — General TCP failure causes when connecting to FTP, FTPS, or SFTP services.