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Posted to dev@mina.apache.org by "ashishkumar2804 (via GitHub)" <gi...@apache.org> on 2023/03/21 05:35:13 UTC
[GitHub] [mina-sshd] ashishkumar2804 opened a new issue, #340: Getting error while connecting to embedded server using sshclient in Authentication
ashishkumar2804 opened a new issue, #340:
URL: https://github.com/apache/mina-sshd/issues/340
I am getting below error while connecting to embedded server using sshclient
Server at localhost/127.0.0.1:2222 presented wrong key:
Code to create embedded server
`m_sshServer = SshServer.setUpDefaultServer();
m_sshServer.setHost("localhost");
m_sshServer.setPort(m_sftpPort);
m_sshServer.setKeyPairProvider(new SimpleGeneratorHostKeyProvider(m_serverKeyPath));
m_sshServer.setSubsystemFactories(getSftpSubsystemFactory());
m_sshServer.setUserAuthFactories(getUserAuthFactory());
m_sshServer.setPasswordAuthenticator(new SimplePasswordAuthenticator());
m_sshServer.setFileSystemFactory(createVirtualFileSystemFactory());
m_sshServer.start();
`
Code to connect using sshClient
`SshClient sshClient = SshClient.setUpDefaultClient();
sshClient.setServerKeyVerifier(new RequiredServerKeyVerifier(hostPublicKey));
sshClient.start();
connectFuture = m_sshClient.connect(m_config.getUserName(), m_config.getHostName(), m_config.getPort())
.verify((long)(m_config.getConnectionTimeoutSeconds() * MILLIS_PER_SECOND));
clientSession = connectFuture.getClientSession();
clientSession.addPasswordIdentity(m_config.getPassword());
authFuture = clientSession.auth()
.verify((long)(m_config.getConnectionTimeoutSeconds() * MILLIS_PER_SECOND));
`
I am not sure, what I am missing, or where I am going wrong.
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[GitHub] [mina-sshd] tomaswolf commented on issue #340: Getting error while connecting to embedded server using sshclient in Authentication
Posted by "tomaswolf (via GitHub)" <gi...@apache.org>.
tomaswolf commented on issue #340:
URL: https://github.com/apache/mina-sshd/issues/340#issuecomment-1478431583
Your client requires the server to have a particular host key matching `hostPublicKey`. Your server uses a `SimpleGeneratorHostKeyProvider`. Double-check that the server does use the expected host key.
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[GitHub] [mina-sshd] tomaswolf closed issue #340: Getting error while connecting to embedded server using sshclient in Authentication
Posted by "tomaswolf (via GitHub)" <gi...@apache.org>.
tomaswolf closed issue #340: Getting error while connecting to embedded server using sshclient in Authentication
URL: https://github.com/apache/mina-sshd/issues/340
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[GitHub] [mina-sshd] ashishkumar2804 commented on issue #340: Getting error while connecting to embedded server using sshclient in Authentication
Posted by "ashishkumar2804 (via GitHub)" <gi...@apache.org>.
ashishkumar2804 commented on issue #340:
URL: https://github.com/apache/mina-sshd/issues/340#issuecomment-1480654212
Bu debugging as above, found that while setting server keypair, it is taking default Algorithm as EC, which was causing the issue. Fixed that, but now i am not able to connect to server by creating SFTP Client using the clientSession. Below is the code i have used to connect
`m_internalSftpClient = SftpClientFactory.instance().createSftpClient(m_clientSession);`
The logs, which i see is as below
`2023-03-23T06:03:22,906Z app=mpgs resource=EmbeddedSftpServer INFO [thread_id=1] Starting up embedded SFTP server.
2023-03-23T06:03:23,380Z app=mpgs resource=EmbeddedSftpServer INFO [thread_id=1] Embedded SFTP server started successfully
2023-03-23T06:03:24,109Z app=mpgs resource=ServerSessionImpl INFO [thread_id=56] Session sftp@/127.0.0.1:62271 authenticated
Caused by: org.apache.sshd.common.SshException: DefaultOpenFuture[SftpChannelSubsystem[id=0, recipient=-1]-ClientSessionImpl[sftp@localhost/127.0.0.1:2222][sftp]]: Failed
`
What i am confused is at the port address, i had provided port 2222, while creating the server, also while creating the sshClient. But while authenticating, it is showing be different port which was used for the purpose.
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[GitHub] [mina-sshd] tomaswolf commented on issue #340: Getting error while connecting to embedded server using sshclient in Authentication
Posted by "tomaswolf (via GitHub)" <gi...@apache.org>.
tomaswolf commented on issue #340:
URL: https://github.com/apache/mina-sshd/issues/340#issuecomment-1480181484
Set a debug breakpoint in the client inside `RequiredServerKeyVerifier.verifyServerKey()` and check what the host key you get is. If it's not the one you expect, set a breakpoint in the server in the `SimpleGeneratorHostKeyProvider` and check what happens there.
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[GitHub] [mina-sshd] ashishkumar2804 commented on issue #340: Getting error while connecting to embedded server using sshclient in Authentication
Posted by "ashishkumar2804 (via GitHub)" <gi...@apache.org>.
ashishkumar2804 commented on issue #340:
URL: https://github.com/apache/mina-sshd/issues/340#issuecomment-1478796143
And how do I ensure that? The same code was working with sshd-core version 0.12. We are trying to migrate to version 2.9.2. With the new version is there any different method to set public key at client side to match with server key-pair?
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[GitHub] [mina-sshd] tomaswolf commented on issue #340: Getting error while connecting to embedded server using sshclient in Authentication
Posted by "tomaswolf (via GitHub)" <gi...@apache.org>.
tomaswolf commented on issue #340:
URL: https://github.com/apache/mina-sshd/issues/340#issuecomment-1483868786
The server listens on port 2222. The client logs that port, since that is what it connects _to_. But the server logs the client-side port the client is connecting _from_, which is 62271 in this case.
I can't debug your code, and I can't make sense of your log excerpt. You will have to debug this yourself. Maybe look at some of the SFTP tests in sshd-sftp to see how an SFTP server and client can be set up.
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