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https://issues.apache.org/jira/browse/GUACAMOLE-2057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17947042#comment-17947042
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Nick Couchman commented on GUACAMOLE-2057:
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[~lexaphix]: Yes, I suspected that supported Kerberos would take a bit more
than just implementing support for FreeRDP3. In particular, I believe the
following things will need to be done:
* Systems running guacd needs to be joined to the AD domain - or, at the very
least, needs to own a Kerberos Service Principal Name that can be used to
verify kerberos tickets.
* guacd's use of the FreeRDP libraries needs to be extended to support Kerberos
functionality - requesting kerberos security, and then specifying any required
parameters.
It's quite possible I'm mis-stating something, here - Kerberos is a bit in the
realm of black magic to me, so I don't always get the flow or terminology
correct. But I'm not at all surprised that simply supporting FreeRDP3 does not
automatically mean that Kerberos authentication works.
> No current support for kerberos authentication using FreeRDP3
> -------------------------------------------------------------
>
> Key: GUACAMOLE-2057
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-2057
> Project: Guacamole
> Issue Type: New Feature
> Components: RDP
> Environment: Active Directory?
> Reporter: Axel D'Olislager
> Priority: Major
> Labels: security
>
> Since in Guacamole 1.6.0 there will be support for FreeRDP3.0, there is
> currently no way to make use of the new kerberos authentication functionality
> within FreeRDP.
>
> As per deprication of NTLM and security issues the demand for it is becoming
> reasonably high, as in a Active Directory domain, your users cannot be part
> of the Protected Users security group which blocks legacy protocols.
> [https://www.reddit.com/r/sysadmin/comments/1b5o6kx/apache_guacamole_kerberos_support_or_roadmap_for/]
>
> I've personally been playing around with this.
> Manually I am able to create a connection using the FreeRDP package using the
> following command and modifying my krb5.conf file:
> {code:java}
> xfreerdp /auth-pkg-list:'!ntlm,kerberos' /u:<username> /v:<host_ip>
> /d:<domainname> /cert:ignore{code}
>
> krb5.conf:
> {code:java}
> includedir /etc/krb5.conf.d/
> [logging]
> default = FILE:/var/log/krb5libs.log
> kdc = FILE:/var/log/krb5kdc.log
> admin_server = FILE:/var/log/kadmind.log
> [libdefaults]
> default_realm = LEXAPHIX.LAB
> dns_lookup_realm = false
> dns_lookup_kdc = true
> ticket_lifetime = 24h
> renew_lifetime = 7d
> forwardable = true
> rdns = false
> [realms]
> LEXAPHIX.LAB = {
> kdc = besnlexdc03.lexaphix.lab
> admin_server = besnlexdc03.lexaphix.lab
> }[domain_realm]
> .lexaphix.lab = LEXAPHIX.LAB
> lexaphix.lab = LEXAPHIX.LAB{code}
>
>
> I've been trying to get this to work, but because I do not have the knowledge
> of this code base, I'm unable to add these things.
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