"FileZilla(디폴트 SSH 키 파일) 갑작스러운 접속 실패".

Question

"The FileZilla connection, which was working fine with the default SSH key file, suddenly stopped working today. I have generated a new key, registered it in authorized_keys, modified sshd_config, and restarted the SSH daemon, but the issue persists. Browser-based SSH is working normally. I would appreciate your assistance."

"갑자기 잘 되던 FileZilla(디폴트 SSH 키 파일) 접속이 오늘 갑자기 안 됩니다. 새 키를 생성하고 authorized_keys에 등록했으며, sshd_config를 수정하고 SSH 데몬을 재시작했으나 문제 해결되지 않았습니다. 브라우저 SSH는 정상 작동합니다. 도움 부탁드립니다."

Riku_Kobayashi · Answer

Hello.

What error message do you get when connecting?  
For example, if you are getting a timeout error, it may be possible that the Firewall settings or the IP address of the Lightsail instance you are connecting to are different.  
If browser based SSH is working I would recommend checking the SSH logs and syslog from within the Lightsail instance.

In the past, I have also seen cases where connection failed due to incorrect permission settings for the private key.  
Therefore, you can also try resetting the permissions on your private key with the following command.  
```
chmod 400 path/to/your.pem
```

"FileZilla(디폴트 SSH 키 파일) 갑작스러운 접속 실패".

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