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Questions tagged [kerberos]

Kerberos is a computer network authentication protocol, which allows nodes communicating over a non-secure network to prove their identity to one another in a secure manner. Its designers aimed primarily at a client–server model, and it provides mutual authentication — both the user and the server verify each other's identity.

0 votes
0 answers
29 views

FreeIPA ldap GSSAPI mechanism no longer works for Kerberos

I upgraded my FreeIPA server on Rocky 9 and the GSSAPI mechanism for Kerberos no longer works. I'm getting error 49, invalid credentials. In the /var/log/sssd/sssd_caps.int.log it shows: * (2024-...
Bryan Carroll's user avatar
1 vote
1 answer
66 views

Can I use Kerberos to connect from Linux to other domain?

I'm trying to connect from a Linux machine to SQL Server with a domain user. I've found some solutions for doing it from Windows on another domain. For example this one When the Linux is in the domain ...
SHR's user avatar
  • 345
-1 votes
1 answer
122 views

Kerberos kinit authentication error on client machine

When I try to get a ticket using kinit clientnorbert@ubunturealm on the ubuntu desktop client machine, I get this message from the ubuntu server, and there are all the relevant components in /etc/...
Doujinx's user avatar
1 vote
0 answers
90 views

Krb5LoginModule accepts ANY password for a valid user

Our jaas.config reads simply: Our_Kerberos { com.sun.security.auth.module.Krb5LoginModule REQUIRED useTicketCache=false refreshKrb5Config=true; }; The earlier ...
Mikhail T.'s user avatar
  • 2,411
0 votes
1 answer
166 views

Kerberos double-hop issue

Okay, here's the scenario: IIS running a web app on SERVERWEB as ServiceAccount. Web app connects to SQL on SERVERSQL as ServiceAccount. In SQL session, an SSIS package is executed. The SSIS package ...
Spivonious's user avatar
0 votes
0 answers
261 views

Azure Files connection lost to FsLogix Profile VHDX (Kerberos Authentication)

The Setup: We deployed 2 multi-session host VMs with NVIDIA GPU and 110GM RAM (CPU SKU = NC16as T4 v3). Session hosts (pooled AVD config) are Entra ID joined and receive policies using InTune. ...
dan's user avatar
  • 279
1 vote
0 answers
121 views

Domain user has different umask than expected

I have a network domain with multiple users managed by LDAP and Kerberos. I'm managing the default umask via pam.d, in my /etc/pam.d/common-session with the line: session optional pam_umask.so ...
tdpu's user avatar
  • 111
0 votes
0 answers
135 views

FreeIPA replica - unable to login via web UI

I've installed a freeipa replica (almalinux-8-4.9.12) from my master (centos-7-4.6.8). Both running in docker. On web UI login I get Login failed due to an unknown reason. error. And any ipa command ...
Dimuk91's user avatar
2 votes
1 answer
366 views

Why doesn't purging kerberos tickets work on a domain controller?

To get a computer to update its group memberships without rebooting the computer, you can purge kerberos tickets with the command klist -li 0x3e7 purge. A subsequent gpupdate or gpresult will reflect ...
Appleoddity's user avatar
  • 3,872
1 vote
0 answers
983 views

Is it safe to regularly purge kerberos ticket cache?

When a computer is added or removed from an AD group, the computer usually needs to be rebooted to reflect the change. Alternatively, one may run the klist -li 0x3e7 purge command to immediately clear ...
Appleoddity's user avatar
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0 votes
0 answers
43 views

Single Sign-on via Apache2 on Ubuntu

I have installed and already set Single Sign-on on Ubuntu server... on Apache2 But now have change domain from PREVIOUS.COM to NEW.COM I have already created on on domain krb5.keytab and placed to ...
user5332's user avatar
  • 141
0 votes
1 answer
492 views

Windows Kerberos authentication and network protocols/ports

Got the following question. I have a windows forest A with a root domain A. A web server in domain A has a proper setup SPN. A user comes from another forest/domain, where a 2way transitive forest ...
Ronald Top's user avatar
0 votes
1 answer
309 views

NFSv4 with sec=krb5: Encryption type aes256-cts-hmac-sha384-192 not permitted

The upgrade from Fedora 38 to 39 broke mounting NFSv4 shares from a Synology NAS using kerberos (sec=krb5). Using mount -v -t nfs -o nfsvers=4,minorversion=1,sec=krb5 10.123.99.2:/volume1/video /mnt/ ...
sebschub's user avatar
  • 207
0 votes
0 answers
28 views

Set Default Policy for all of user on kerberos ubuntu

I am confused when creating a password policy in kerberos ubuntu, what I don't know is how to make the policy that we have created become the default and how to make the policy apply to users that we ...
kyors's user avatar
  • 1
0 votes
1 answer
634 views

kpssvc service won't start on DC

I have a single domain with 2 sites, each site has it's own 2019 DC. On the (secondary) site I see an alert that the KPSSVC service (KDC Proxy Server Service) is not started. And it's startup type ...
TSG's user avatar
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