connection refused - Connection refused by remote host

root@linuxfix:~/connection_refused$

connection refused

Connection refused by remote host

Solutions

Prerequisites: Start by updating your system to resolve common issues and ensure the solutions provided below are compatible with your current environment.

check_latest_version && sudo apt update && sudo apt upgrade -y

Check service status

Verify the target service:

systemctl status service

ps aux | grep service

netstat -tlnp | grep port

Test connectivity

Check network path:

ping hostname

telnet hostname port

nc -zv hostname port

Check firewall

Verify firewall rules:

iptables -L

ufw status

firewall-cmd --list-all

What is connection refused?

The target service is not accepting connections, typically due to service being down or firewall blocking.

Common scenarios: Web servers down, database unreachable, SSH blocked, or network services stopped.

Common Causes

Service not running
Firewall blocking
Wrong port
Network issues
Server overload

Debugging Tips

ss -tulpn

lsof -i :port

traceroute hostname

Prevention

Monitor service health
Configure proper firewalls
Use health checks

Additional Resources

Network Troubleshooting

Linux networking guide

network connection service firewall