Use the ICIClientSettings interface SetAllowNoop method to allow a user to send the NOOP command to keep a connection open. Use the same method to prohibit the user from sending the NOOP command. Refer to User FTP Security Settings for an illustration of how this and other Client Settings Interface Methods and Properties can be accessed in the Administrator interface.
Signature:
HRESULT SetAllowNoop([in] SFTPAdvBool val);
0 = Prohibit
1 = Allow
-2 = Inherit