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Does anyone know the cause for ssh error "Warning: child process (/usr/local/bin/ssh2) exited with code 66."?

Posted on 2008-10-29
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Last Modified: 2013-12-09
We're receiving the following error message after we successfully connect to the remote host via sftp and then attempt to get a file:

Disconnected; protocol error (Protocol error: packet too long: 40580.).
Warning: child process (/usr/local/bin/ssh2) exited with code 66.

We are able to pick up files from this site.  In this particular case, the, if it matters, file size we're attempting to pick up is 1760153 bytes.  Does anyone know what the above error might be caused by and how to resolve it?

Thanks in advance.
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Question by:ts01206
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by:woolmilkporc
ID: 22839518
Hi,
what are the ssh protocol versions configured in your sshd_config (server) and on the client side?
Make sure clients and server use the same version (1/2)
On the client side, you can try to force a protocol version by either issuing 'ssh -1 ...' or 'ssh -2 ...'
Which one works (if any)?
Take care that the working version is allowed on both sides ('Protocol' keyword in the config files)
wmp
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by:ts01206
ID: 22841092
I'll find out on the versions.  In the meantime, if we're sftp'ing into the box, we can't specify ssh -1 or -2, correct?
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woolmilkporc earned 250 total points
ID: 22841171
Hi,
at least you can specify 'sftp -1' to force protocol version 1. '-2' is not possible, afaik.
And when you have sftp, you do have ssh, too. So you could try the 'ssh' part nevertheless (just to test).
wmp
 
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Author Comment

by:ts01206
ID: 22841462
Ok.  If we use sftp userid@server to connect with, how do you then specify ssh -1 or -2?  In this case, isn't ssh already in use once we connect?  ssh is called by sftp, right?  Also, if this matters, we have exchanged ssh keys and they are in place.
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by:woolmilkporc
ID: 22841488
As I wrote above, try sftp -1 userid@server
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Author Comment

by:ts01206
ID: 22846155
Ok.  Turns out there was an incompatible version of sftp running on the server we were connecting to.  A patch was applied to sftp and all is well again.  I do appreciate the responses I got from you, wollmilkporc.  Thanks for your help.
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Author Closing Comment

by:ts01206
ID: 31618372
Thanks again.
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Expert Comment

by:ReneCrozier
ID: 23339754
We are experiancing the same issue.  However, we have several applications using or calling different versions of OpenSSH and Tectia SSH.  How do you determine which one needs to be updated?
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