Unable to connect to IP Switch SFTP/SSH server

Symptom

Using Gentran Integration Suite 4.3 and build 4322.  Cannot connect to the IP Switch SFTP/SSH server using password authentication. 

The Perimeter Logs indicates the Protocol Version Exchange message from the IP Switch server is the string: SSH-2.0.   

RFC 4253 specifies Protocol Version Exchange as:
SSH-protoversion-softwareversion SP comments CR LF
 

Gentran Integration is unable to parse the Protocol Version Exchange message.   A message more consistent with the format outlined in RFC4253 is needed. 

Exceptions in the Perimeter Log

Windows

[2010-05-12 08:38:09.244] DEBUG 000000000000 GLOBAL_SCOPE Session.verifyHostKey(S,R) setting key type ssh-rsa
[2010-05-12 08:38:09.255] ERROR 000000000000 GLOBAL_SCOPE Session.beginSession(BSR,R,PT) runnable caught RuntimeException
java.lang.StringIndexOutOfBoundsException
at java.lang.String.substring(String.java:1088)
at com.maverick.ssh.SshConnector.c(Unknown Source)
at com.maverick.ssh.SshConnector.connect(Unknown Source)
at com.maverick.ssh.SshConnector.connect(Unknown Source)
at com.sterlingcommerce.woodstock.services.sftpclient.client.Session$1.run(Session.java:191)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:727)
at java.lang.Thread.run(Thread.java:801)
[2010-05-12 08:38:19.233] ERROR



Sun OS

[2010-05-12 09:44:20.521] ERROR 000000000000 GLOBAL_SCOPE Session.beginSession(BSR,R,PT) runnable caught RuntimeException
java.lang.StringIndexOutOfBoundsException: String index out of range: -5
at java.lang.String.substring(String.java:1768)
at com.maverick.ssh.SshConnector.c(Unknown Source)
at com.maverick.ssh.SshConnector.connect(Unknown Source)
at com.maverick.ssh.SshConnector.connect(Unknown Source)
at com.sterlingcommerce.woodstock.services.sftpclient.client.Session$1.run(Session.java:191)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:727)
at java.lang.Thread.run(Thread.java:595)

Welcome Message in the Perimeter Log.

[2010-05-11 16:29:21.906] DEBUG <Dispatcher> 000000000000 GLOBAL_SCOPE Parsing frame: Frame[DATA < >23826> 9]
[2010-05-11 16:29:21.906] DEBUG <Dispatcher> 000000000000 GLOBAL_SCOPE Relay[local]: received: DataMessage on circuit 23826 with starting characters [SSH-2.0
]
[2010-05-11 16:29:21.906] DEBUG <Client783> 000000000000 GLOBAL_SCOPE ConduitStreamPair{LOG.EN_US}-is.read() - Read 1 bytes