Some users have reported that they cannot connect to the SilverSHielD server after upgrading it to the latest version. The error reported is Error number 3 (SSH_DISCONNECT_KEY_EXCHANGE_FAILED) or number 102 (unknown error).
EASY FIX: Just upgrade to v18.104.22.168 or higher, it handles such issue automatically. Otherwise, please read on...
In such cases the log file shows something like (similar to) this:
2011-05-25 13:02:32 Client connection from [XX.XX.XXX.XX] established
2011-05-25 13:02:33 [0000059k] >>>>> Error 3
2011-05-25 13:02:33 [0000059k] SSH connection closed
2011-05-25 13:02:33 NTC (0)
2011-05-25 13:02:33 [0000059k] server thread terminated
Such error is related to Z-Compression. If that happens it means that the client you're using does not support Z-Compression or it does not support the same version of the compression algorithm used by SilverSHielD.
To fix the problem, just open the SilverSHielD Management Console, disable Z-Compression and save the configuration.
Or, if you're using a client that supports Z-Compression, like WinSCP for instance, jusr remember to enable compression on the client as well.