What role does a firewall play in a 'Connection Refused' error with PuTTY?

By: USER6889
26 Agustus 2025 Support 5 minutes
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Grade: Education Subject: Support
What role does a firewall play in a 'Connection Refused' error with PuTTY?
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A firewall on the remote server might be configured to block incoming connections on the SSH port (default 22). You need to configure the firewall (e.g., `ufw` on Ubuntu, `firewalld` on CentOS/RHEL, Windows Firewall) to allow traffic on that port from your IP address or network.
Answered on 26 Agustus 2025

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