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https://bugzilla.mindrot.org/show_bug.cgi?id=2198 Bug ID: 2198 Summary: GSSAPIKeyExchange gssapi-keyex bug in kex.c choose_kex() Product: Portable OpenSSH Version: 6.4p1 Hardware: All OS: Linux Status: NEW Severity: normal Priority: P5 Component: Kerberos support Assign...

Hi folks Is there any particular reason why these two great features (thanks Simon!) are not part of the OpenSSH mainstream? Met vriendelijke groet Best regards Bien ? vous Miguel SANDERS ArcelorMittal Gent UNIX Systems & Storage IT Supply Western Europe | John Kennedylaan 51 B-9042 Gent T +32 9 347 3538 | F +32 9 347 4901 | M +32478 805 023 E miguel.sanders at arcelormittal.com

...a working /etc/krb5.keytab e.g. i have two s4 dc's bob alice i have done the following. I want to connect from bob to alice with the service accounts I added to the following to both of the dcs sshd_config GSSAPIAuthentication yes GSSAPICleanupCredentials yes GSSAPIStrictAcceptorCheck yes GSSAPIKeyExchange yes ssh_config GSSAPIAuthentication yes GSSAPIDelegationCredentials yes GSSAPIKeyExchange yes GSSAPITrustDNS yes After that i created the keytab i know i need an working ticket Samba-tool domain exportkeytab /etc/krb5.keytab -principal=alice$ I get the ticket with on bob for alice kinit -v -k...

...: db files rpc: db files netgroup: nis *passwd: compat winbindgroup: compat winbind* *#passwd: files winbind#group: files winbind* If I use default sshd_config # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes #GSSAPIStrictAcceptorCheck yes #GSSAPIKeyExchange no I have: d at uc-smlbox20:~$ ssh SVITLA3\\test01 at uc-smlbox20.svitla3.room SVITLA3\test01 at uc-smlbox20.svitla3.room's password: Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-40-generic x86_64) d at uc-smlbox20:~$ ssh APEX\\jake at uc-smlbox20.svitla3.room APEX\jake at uc-smlbox20.svi...

Hi friends, I have a one way outgoing trust between SAMBA trusting domain and AD trusted domain. SSH Authentication of a user belonging to the SAMBA domain works properly on a Linux computer which is a member of SAMBA domain. I would like to authenticate a trusted user from the AD domain on the same Linux computer with SSH. Currently it doesn't work. I am able to authenticate trusted accounts

On 02/10/2020 13:24, Jason Keltz via samba wrote: > Hi Louis, > > I had already done that at one point. > > My pam_winbind is already working.? I can SSH to the system, and I get > a proper ticket.? My only issue is that it doesn't refresh the ticket > before expiry when I ssh to a system.? I think I can script around > that and just not rely on winbind to do it.

...t; > *passwd: compat winbindgroup: compat winbind* > > > > *#passwd: files winbind#group: files winbind* > > > If I use default sshd_config > > # GSSAPI options > #GSSAPIAuthentication no > #GSSAPICleanupCredentials yes > #GSSAPIStrictAcceptorCheck yes > #GSSAPIKeyExchange no > > I have: > > d at uc-smlbox20:~$ ssh SVITLA3\\test01 at uc-smlbox20.svitla3.room > > SVITLA3\test01 at uc-smlbox20.svitla3.room's password: > > Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-40-generic x86_64) > > d at uc-smlbox20:~$ ssh APEX\\jake at uc-smlbox...

...? ? ? db files rpc:? ? ? ? ? ? db files netgroup: ? ? ? nis passwd: compat winbind group:? compat winbind #passwd: files winbind #group:? files winbind If I use default sshd_config # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes #GSSAPIStrictAcceptorCheck yes #GSSAPIKeyExchange no I have: d at uc-smlbox20:~$ ssh SVITLA3\\test01 at uc-smlbox20.svitla3.room SVITLA3\test01 at uc-smlbox20.svitla3.room's password: Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-40-generic x86_64) d at uc-smlbox20:~$ ssh APEX\\jake at uc-smlbox20.svitla3.room APEX\jake at uc-smlbox20...

If I am trying to build OpenSSH 6.6 with Kerberos GSSAPI support, do I still need to get Simon Wilkinson's patches? --- Scott Neugroschl | XYPRO Technology Corporation 4100 Guardian Street | Suite 100 |Simi Valley, CA 93063 | Phone 805 583-2874|Fax 805 583-0124 |

...d/g' /etc/nsswitch.conf sed -i 's/group: files systemd/group: files systemd winbind/g' /etc/nsswitch.conf pam-auth-update ### And i enabled this part in sshd, not automated yet, do this manualy. # GSSAPI options GSSAPIAuthentication yes GSSAPICleanupCredentials yes GSSAPIKeyExchange yes # If your version supports this/ GSSAPIStoreCredentialsOnRekey yes # If your version supports this/ # Remember with UseDNS no, you cant use kerberos auth UseDNS yes reboot And done, i can login with putty, with kerberos SSO from a windows pc. (after setting putty correctly o...

Hi, I am doing some kerberos testing with samba4 using ssh. I have setup samba4 using the howto at http://wiki.samba.org/index.php/Samba4/HOWTO and active directory seems to be working both with Windows and Linux clients. ssh unfortunately is not kerberos authenticating via GSSAPI. The client krb5.conf contains this: ===================================================== [libdefaults]

Ah, and it that server allowed to "forward/exchange" that ticket? Try this on both servers and test again. GSSAPIAuthentication yes GSSAPICleanupCredentials no GSSAPIStrictAcceptorCheck no GSSAPIKeyExchange yes Which you need exaclty, i dont now, but i think you need to look in this area.. Think in this : Kerberos: Requested flags: renewable-ok, canonicalize, renewable, forwardable Which are allowed for the server(s)? Greetz, Louis > -----Oorspronkelijk bericht----- > Van: samba [mail...

...pt for Krb5 passwords or Krb5 tickets. And I really can't tell if the patches are even working or if it contacts the KDC (no error message shows up on console or in /var/log/messages) It just rejects my Krb5 password. Per the patch, I do have this in my sshd_config: GssapiAuthentication yes GssapiKeyExchange yes Does anyone have any ideas of how I can debug this? Thanks! - Peter Losher -- Peter.Losher at nominum.com - [ Systems Admin. | Nominum, Inc. ]

...4.4p1. This patch adds RFC4462 compatibility to OpenSSH, along with adding additional GSSAPI support that is yet to make it into the main tree. The patch implements: *) gss-group1-sha1-*, gss-group14-sha1-* and gss-gex-sha1-* key exchange mechanisms. This can be enabled through the GSSAPIKeyExchange option on both client and server (bugzilla.mindrot.org #1242) *) Support for the null host key type *) Support for CCAPI caches on Mac OS X (bugzilla.mindrot.org #1245) *) Don't penalise the client for authentication failures caused by server misconfiguration (b...

hi all i have samba4 ad setup and working, i am currently trying to set up passwordless ssh on my client servers, i have read this page https://wiki.samba.org/index.php/Authenticating_other_services_against_AD i have a properly configured krb5.conf file, i have a keytab from the samba dc and i can kinit and obtain a valid ticket. the only thing i have not done is to join my client which is a

...bugs at mindrot.org Reporter: tomas.kuthan at oracle.com When GSSAPIStrictAcceptorCheck is not explicitely specified, the default value should be yes. It is documented in sshd_config(5) this way and it preserves original behavior. Also GSSAPIStrictAcceptorCheck=no interacts poorly with GSSAPIKeyExchange, where it make the server willing to negotiate GSS-API key exchange, although no keytab was provided. -- You are receiving this mail because: You are watching the assignee of the bug.

I'm pretty sure this is a resolving problem. Can you verify this: https://wiki.samba.org/index.php/Verifying_and_Creating_a_DC_DNS_Record Especialy these : for both guids and cross check if from both servers. host -t CNAME 50507d18-c8ee-4ef4-bbda-4d0d9bc31caa._msdcs..... Can you post from both server. /etc/hosts /etc/resolv.conf host servername host fqdn host servername @dns othere

...ing : AllowGroups lin-allow-ssh win-allow-ssh Windows users in win-allow-ssh Linux users lin-allow-ssh ( in my case only Linux admins ) The windows group every windows user want to give access to the server. And did you enable kerberos auth in sshd. # GSSAPI options GSSAPIAuthentication yes GSSAPIKeyExchange yes Should be sufficent. Now, if you followed Stephans guide, and if i would make a guess. Is nsswitch configured? /etc/nsswitch.conf ? Im also assuming your using ubuntu or debian, if so, Running this give us all we need. https://raw.githubusercontent.com/thctlo/samba4/master/samba-collect-d...

Hi, As far as I can tell, when working in an environment with many servers, there seem to be several ways for your client to authenticate the HostKeys of each: 1) Set StrictHostKeyChecking=no, and hope you don't get MITM'd the first time you connect to a server. 2) Use SSHFP records (which generally requires you to have DNSSEC fully deployed to be meaningful compared to #1, I think?)

...hentication no > > # Kerberos options > #KerberosAuthentication no > #KerberosOrLocalPasswd yes > #KerberosTicketCleanup yes > #KerberosGetAFSToken no > > # GSSAPI options > GSSAPIAuthentication yes > GSSAPICleanupCredentials yes > GSSAPIStrictAcceptorCheck yes > GSSAPIKeyExchange yes > GSSAPIStoreCredentialsOnRekey yes > > # Allow groups ( samba/windows groepen ) > AllowGroups servers-ssh sshgroup > > > > # Set this to 'yes' to enable PAM authentication, account processing, > # and session processing. If this is enabled, PAM authentication...