Hi Kevin, I quickly checked in the default config in zesty but ssh logins are working fine (pw logins is what I tested).
There must be more to your config that triggers this. Is what you see in dmesg an apparmor denial or something else? Could you attach your dmesg covering the issue that you see? You logs attached so far only hold plenty of: May 12 19:17:15 hostname sshd[4241]: pam_unix(sshd:auth): check pass; user unknown [...] May 12 20:51:55 hostname sshd[8608]: error: maximum authentication attempts exceeded for root from 192.168.1.1 port 9990 ssh2 [preauth] May 12 20:51:55 hostname sshd[8608]: PAM service(sshd) ignoring max retries; 6 > 3 But those could just as well be from your testing. I imported your sshd config as auto attached to the report, restarted it and it still worked fine. So we really would need more to help debugging. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/1690485 Title: openssh-server SIGSYS with 'UsePrivilegeSeparation sandbox' Status in openssh package in Ubuntu: Incomplete Bug description: The 'sshd' process gets 'authentication failure' and refuses to allow any login. dmesg indicates that the problem is SIGSYS on a call to 'socket' (syscall #41, signal #31). On a hunch, I decided to test whether the problem is related to 'seccomp' and changed /etc/ssh/sshd_config from the default # UsePrivilegeSeparation sandbox to the former standard value UsePrivilegeSeparation yes and logins started to work again. Obviously, I'd like to have the additional protection that sandboxing would give me. ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: openssh-server 1:7.4p1-10 ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8 Uname: Linux 4.10.0-20-generic x86_64 ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 CurrentDesktop: XFCE Date: Fri May 12 21:06:20 2017 InstallationDate: Installed on 2017-04-08 (35 days ago) InstallationMedia: SourcePackage: openssh UpgradeStatus: Upgraded to zesty on 2017-04-24 (19 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1690485/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
