Connection problems
Real fixes for common problems: connection errors, boot issues, slow servers, email delivery and website errors.
- Fix SSH connection problems: refused, timed out, denied Each SSH error points to a different layer: the network, the SSH service or the login. Find your message below and follow the fix. Beginner 12 min
- Fix Remote Desktop connection problems on Windows servers Find the Remote Desktop message you see, check the port, credentials and sessions, and get back to your Windows server. Beginner 10 min
- Server unreachable? A step-by-step diagnosis When nothing responds, work from the outside in: is it everyone or just you, is the service active, is the server running, and what does its log say. Beginner 10 min
- Locked out after a firewall change: how to get back in A firewall rule or a port change can cut your own connection. Use the console to undo it, then apply firewall changes with a safety net. Intermediate 10 min