8/2/2023 0 Comments Xquartz big surAdd the following at the very end of your ~/.Take note of where on your client system, the xauth command resides: which xauth.Try again with ssh -X -vv remotehost, which should give you additional clues as to why the X11 tunnel setup failed.ĭo you see the following message appearing? debug1: No xauth program. The error message you cite is a symptom that can have many causes. the X11 libraries and/or the xauth command could be missing or the sshd configuration could be set to deny X11 access) On Mac: check that Xquartz is up-to-dateĪs per Will Angley's answer Examine ssh -vv -X output If you get no result, your server is likely mis-configured (e.g. xauth add $DISPLAY MIT-MAGIC-COOKIE-1 1234 # Bogus cookie just for this testĮxpected result: there should be a DISPLAY variable set on the remote end of the ssh-to-self session.export DISPLAY=:44 # (Bourne shell) or setenv DISPLAY :44 # (csh / tcsh).If you aren't in a position to check that (you have but your one laptop running X11, say), you can ssh from the server to itself using a fake session: Are you able to ssh -X from any other host successfully? Does ssh -Y work while ssh -X doesn't? In either case, assume ssh + X11 is set up correctly on your server and move on to the next section. That bit me several times before I read enough docs to understand what was happening.įirst, you should rule out any server-side problems. New attempts to open windows will just fail after that. It's also important to note that "untrusted" X11 forwarding turns off after a certain amount of time to keep you from accidentally leaving it on. Do you need to be able to rotate your X display from the remote host? This is probably why RandR is disabled with -X. "Untrusted" is the one that makes it (somewhat) safer to deal with an untrusted remote host.Īn "Untrusted" connection attempts to limit what a black hat could do to you by engaging the X11 security extension and disabling other extensions that you (hopefully) don't need. sharrison5 mentioned this issue GLXBadContext in 1.0. If not, it means it's probably an isuse in mesa or some other client library. Do you see an issue If so, this means it's an X11 server regression. But actually it's an option you're supposed to use in situations where the connection IS trustworthy and you want to run stuff without extra security measures getting in your way. install 2.8.0 Launch your (old) Xquartz-2.7.11.app and use it to connect to your remote system. I thought "Trusted" connections were safer. Download XQuartz-2.8.0rc1.dmg, and open it in macOS’s Installer. This terminology actually confused me for years. "Trusted" means you are entirely confident that no on on the remote host will get access to your Xauth data and use it to monitor your keystrokes for instance. ![]() SSH will use additional security measures to try to make X11 forwarding safer. "Untrusted" in this context means you don't trust the connection.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |