I tested this Juniper support and it works for me excellent way on Linux but when I tried same on Windows it doesn't work. It seems that option switch --juniper isn't available there, as when used openconnect just show usage page like when invalid option is used. Note that I used mingw32 to build the binaries. http://lists.infradead.org/pipermail/openconnect- devel/2014-March/001728.html Is there some trick how make it working or Juniper support is limited just on Linux? O.