On Thu, 9 Nov 2023, Jeffrey Walton wrote: > On Thu, Nov 9, 2023 at 11:43 AM Greg Wooledge <g...@wooledge.org> wrote: >> >> On Thu, Nov 09, 2023 at 03:01:29PM +0000, fxkl4...@protonmail.com wrote: >>> i upgraded from bullseye to bookworm with no problems >>> when i try ssh with -X/-Y to the bookworm machine x11 forwarding fails >>> >>> debug1: Requesting X11 forwarding with authentication spoofing. >>> debug1: Sending environment. >>> debug1: Sending env LANG = en_US.UTF-8 >>> debug1: Sending env LC_ALL = en_US.UTF-8 >>> X11 forwarding request failed on channel 0 >>> >>> the .Xauthority file is not updated >>> is there new security or configuration >> >> On the server, run: >> >> grep X11 /etc/ssh/sshd_config >> >> That should tell you whether X11Forwarding and its related options have >> been disabled. > > Probably need a 'grep -IR' since overrides can be provided in sshd_config.d/ : > > $ sudo ls /etc/ssh/sshd_config.d/ > 10-pubkey_auth.conf 20-no_root_login.conf > > And: > > $ sudo cat /etc/ssh/sshd_config.d/10-pubkey_auth.conf > PasswordAuthentication no > ChallengeResponseAuthentication no > KerberosAuthentication no > KerberosOrLocalPasswd no > GSSAPIAuthentication no > UsePAM no > PubkeyAuthentication yes > > Jeff >
my /etc/ssh/sshd_config.d/ is empty
