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webMethods Knowlegebase : Unable to connect to VirtualFolder via SFTP with SSH2 (1802275)

Troubleshooting


Problem

After configuring a Virtual Folder connecting to a SFTP using public/private key. (the public key is required to be encrypted with SSH2.), in Virtual Folder configuration, the following error happens while testing the connection to that SFTP host:

2019-09-09 14:10:01.009 CEST (com.softwareag.mft.external.session.sftp) [MFT.LOG.2100] ERROR: [:1748389791] Error state: ssh connect. Error:Application error [Unknown cause]

2019-09-09 14:10:01.009 CEST (com.softwareag.mft.external.session.sftp) [MFT.LOG.2100] ERROR: com.maverick.ssh.SshException: Application error [Unknown cause]

at com.maverick.ssh2.TransportProtocol.processMessage(TransportProtocol.java:1910)

at com.maverick.ssh2.TransportProtocol.nextMessage(TransportProtocol.java:708)

at com.maverick.ssh.components.jce.client.DiffieHellmanGroup14Sha1.performClientExchange(DiffieHellmanGroup14Sha1.java:165)

at com.maverick.ssh2.TransportProtocol.performKeyExchange(TransportProtocol.java:1455)

at com.maverick.ssh2.TransportProtocol.processMessage(TransportProtocol.java:1954)

at com.maverick.ssh2.TransportProtocol.startTransportProtocol(TransportProtocol.java:359)

at com.maverick.ssh2.Ssh2Client.connect(Ssh2Client.java:189)

at com.maverick.ssh.SshConnector.connect(SshConnector.java:638)

at com.maverick.ssh.SshConnector.connect(SshConnector.java:456)

at com.softwareag.mft.client.SFTPClient$1.connect(SFTPClient.java:210)

at com.softwareag.mft.client.proxy.OutboundProxyResolver.resolveProxies(OutboundProxyResolver.java:184)

at com.softwareag.mft.client.SFTPClient.login(SFTPClient.java:167)

at com.softwareag.mft.server.services.impl.ServerAdmin.getRemoteServerStatus(ServerAdmin.java:886)

at com.softwareag.mft.proxy.ServerAdminProxy.getRemoteServerStatus(ServerAdminProxy.java:199)

at wm.mft.portal.server.getRemoteServerStatus(server.java:1292)

at sun.reflect.GeneratedMethodAccessor890.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

...

Document Location

Worldwide

[{"Line of Business":{"code":"LOB77","label":"Automation Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSQG2X","label":"IBM webMethods Managed File Transfer"},"ARM Category":[{"code":"a8mKe00000000AQIAY","label":"webMethods ActiveTransfer Server (MAT)"}],"ARM Case Number":"","Platform":[{"code":"PF025","label":"Red Hat Enterprise Linux"}],"Version":"10.3"}]

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Document Information

Modified date:
20 March 2025

UID

ibm17203802

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