Putty is a popular open-source terminal emulator and network file transfer application, which is widely used for its flexibility and wide compatibility. However, many users sometimes encounter the “Putty Network Error: Connection Refused” issue, which can create frustration and halt productivity. This article will discuss the possible causes of this error and provide potential solutions to help you quickly get back on track.
1. Firewall Blocking Connection:
One of the most common reasons for encountering this error is that the firewall on the server or client-side might be blocking the connection.
Solution:
To resolve this issue, check if there are any firewall rules preventing access to SSH port 22 (or your custom SSH port) on both the client and server sides. Adjust the firewall rules accordingly to allow access.
2. Server-side SSH Service Not Running:
Another possible cause for this error is that the OpenSSH service might not be running on the server to which you are trying to connect.
Solution:
Log in to your server remotely through an alternative method (such as web-based control panels), navigate to SSH service configuration, and ensure it’s running. Restarting the service may also help resolve any temporary issues.
3. Incorrect IP Address or Hostname:
Using an incorrect IP address or hostname can also result in a connection refused error.
Solution:
Double-check that you are using the correct IP address or hostname for your remote server. Verify whether there have been any changes to your server settings or if it has been assigned a new IP address.
4. Port Number Mismatch:
A mismatch in port numbers could be another potential reason for experiencing this error message in Putty.
Solution:
Verify that you are using the correct port number while establishing a connection through Putty. Check your server settings and any documentation provided by your hosting provider, if necessary.
5. Maximum Concurrent Connection Limit Reached:
Some servers are configured to allow a limited number of concurrent connections, which, once exceeded, leads to connection refusal.
Solution:
In this situation, the best course of action is to either wait or try to close any unused inactive connections that might be open. Contact your hosting provider if you’re unsure about concurrent connection limits on your server.
6. Encrypted Connection Key Mismatch:
A failed encrypted connection due to key mismatch may also be an underlying cause of the error.
Solution:
Regenerate your SSH keys in Putty and on the server. Follow the documentation provided by your hosting provider or use online resources to walk through the steps for regenerating key pairs.
Conclusion:
The “Putty Network Error: Connection Refused” issue can have multiple root causes. By following the above-mentioned solutions, you should be able to identify and resolve the issue quickly. If you’re still experiencing difficulties, consult with your hosting provider or IT professional—ensuring that both the client and server-side configurations are correct will save you time and frustration in the long run.
Resolving the Putty Network Error: Connection Refused
Introduction:
Putty is a popular open-source terminal emulator and network file transfer application, which is widely used for its flexibility and wide compatibility. However, many users sometimes encounter the “Putty Network Error: Connection Refused” issue, which can create frustration and halt productivity. This article will discuss the possible causes of this error and provide potential solutions to help you quickly get back on track.
1. Firewall Blocking Connection:
One of the most common reasons for encountering this error is that the firewall on the server or client-side might be blocking the connection.
Solution:
To resolve this issue, check if there are any firewall rules preventing access to SSH port 22 (or your custom SSH port) on both the client and server sides. Adjust the firewall rules accordingly to allow access.
2. Server-side SSH Service Not Running:
Another possible cause for this error is that the OpenSSH service might not be running on the server to which you are trying to connect.
Solution:
Log in to your server remotely through an alternative method (such as web-based control panels), navigate to SSH service configuration, and ensure it’s running. Restarting the service may also help resolve any temporary issues.
3. Incorrect IP Address or Hostname:
Using an incorrect IP address or hostname can also result in a connection refused error.
Solution:
Double-check that you are using the correct IP address or hostname for your remote server. Verify whether there have been any changes to your server settings or if it has been assigned a new IP address.
4. Port Number Mismatch:
A mismatch in port numbers could be another potential reason for experiencing this error message in Putty.
Solution:
Verify that you are using the correct port number while establishing a connection through Putty. Check your server settings and any documentation provided by your hosting provider, if necessary.
5. Maximum Concurrent Connection Limit Reached:
Some servers are configured to allow a limited number of concurrent connections, which, once exceeded, leads to connection refusal.
Solution:
In this situation, the best course of action is to either wait or try to close any unused inactive connections that might be open. Contact your hosting provider if you’re unsure about concurrent connection limits on your server.
6. Encrypted Connection Key Mismatch:
A failed encrypted connection due to key mismatch may also be an underlying cause of the error.
Solution:
Regenerate your SSH keys in Putty and on the server. Follow the documentation provided by your hosting provider or use online resources to walk through the steps for regenerating key pairs.
Conclusion:
The “Putty Network Error: Connection Refused” issue can have multiple root causes. By following the above-mentioned solutions, you should be able to identify and resolve the issue quickly. If you’re still experiencing difficulties, consult with your hosting provider or IT professional—ensuring that both the client and server-side configurations are correct will save you time and frustration in the long run.
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