On 2015/09/01 16:04, Younes Manton wrote: > Hi, > > I've had this problem for at least a couple of years. Whenever I > connect to a Windows machine via xfreerdp over my work place VPN the > xfreerdp client inevitably hangs. Occassionally SSH sessions will also > hang, but this happens much less often. I never see either problem > when not connected over VPN. > > I normally run OpenConnect via Network Manager, but I recently ran it > on the command line with -v to watch the output. As best as I can tell > the hangs always follow a CSTP rekey and the only thing that's > different from the usual is that these lines begin to appear: > > Send CSTP Keepalive > Send CSTP DPD > Got CSTP DPD response > > They seem to stop being emitted once I kill the unresponsive xfreerdp client. > > On the Windows side I see the following in the Event Viewer every time > xfreerdp hangs: > > The Terminal Server security layer detected an error in the protocol > stream and has disconnected the client. Client IP: <my IP>. > > Anything I can do to debug this? Try reducing the mtu requested (openconnect's -m flag).