Hello openconnect team, Here is a quick summary of what I've sent previously: My company doesn't official support Linux when connecting to a Cisco Anywhere VPN. I'm told if I can get it to work, it is fine, but they are not going to support me. So, what I've done is I referenced this thread between David and Fromzy: (switch to http) hxxp://openconnect-devel.infradead.narkive.com/HaRKFi2f/csd-use-and-impossib le-to-connect-linux The problem I was having is openconnect would fail to continue if the CSD could not be downloaded. This is what the log showed: GET hxxps://vpn.company.com/CACHE/sdesktop/install/binaries/sfinst Got HTTP response: HTTP/1.1 404 Not Found (does not exist) X-Transcend-Version: 1 HTTP body http 1.0 (-1) Cannot receive HTTP 1.0 body without closing connection Failed to obtain WebVPN cookie I original directly modified the code to skip the download but later found out that I could simply use "os=android" on the command line. Once I got past that I ended up using sslsplit and capturing a windows session connecting. I then basically ran Curl in the wrapper script using these post values: run_curl --data-ascii @- "https://$CSD_HOSTNAME/+CSCOE+/sdesktop/scan.xml?reusebrowser=1" <<-END endpoint.policy.location="Default"; endpoint.enforce="success"; endpoint.fw["MSWindowsFW"]={}; endpoint.fw["MSWindowsFW"].exists="true"; endpoint.fw["MSWindowsFW"].enabled="ok"; endpoint.as["MicrosoftAS"]={}; endpoint.as["MicrosoftAS"].exists="true"; endpoint.as["MicrosoftAS"].activescan="ok"; endpoint.av["MicrosoftAV"]={}; endpoint.av["MicrosoftAV"].exists="true"; endpoint.av["MicrosoftAV"].activescan="ok"; END I got two other co-workers hook up this way as well and we are all successfully able to connect now. I'm having my co-workers use the "--os-android" flag, but I question if this isn't going to lead to other issues in the future. All, I want to do is continue if the CSD failed to download or skip it altogether. What I'd like to eventually do is put together a tutorial for other Linux users who are stuck. I spent a long time getting this to work and I think others might find it useful. My next goal is to get this to work with network-manager but I'm still stuck on how to correctly update the version of openconnect it uses and how to pass in optional commandline arguments. For now do you think it would make sense to add in a new commandline argument? Maybe something like "--csd-skip-download"? I'm fine continuing to use "--os=android", but it seems a bit odd. I can reply to this thread sometime in the future once I complete my tutorial. Thanks --Andy