You should be able to cross reference your existing build with the source from cygwin here: http://cygwin.com/packages/openssh/ and ftp://ftp.cygwin.com/pub/cygwin/release/openssh/ and verify if it's enabled or not, and even if it's enabled, if a fix has been included. (the makefile should have pretty good descriptions of what options were used for the binary package). Thanks, Jok