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From Andy Pattrick <>
Subject 0.9.12 poor RDP performance vs 0.9.9
Date Wed, 07 Jun 2017 12:59:46 GMT

I have 0.9.12 up and running in docker and compared to my 0.9.9 docker installation, RDP performance
is very poor. there seems to be a lot of lag in mouse clicks and response from the target
machine.  Also when initially connecting with 0.9.12 I always seem to get the attached screen
and have to reconnect a few times to get it, whereas this never happens with 0.9.9

I am using the same target machine in both cases (windows 7 Ultimate VM) so it's not that,
and I am running the two Guacamole servers in exactly the same environment so I don't believe
it's that either. I've tried fiddling about with the various RDP authentication settings but
with no improvement. My other connection settings are the same in both servers. It appears
that something has been done in the RDP code that has really damaged the performance between
these two versions.

Has anyone else seen this or can anyone offer any advice or ideas? If I can't improve it I
am going to have to revert to 0.9.9 to have usable RDP performance but I don't really want
to because I want the rebranding / customisation support that came with later versions.

Cheers Andy.

From: Marco Casavecchia Morganti []
Sent: 07 June 2017 11:58
Subject: Re: LDAP_USER_BASE_DN pointing to an AD Security Group

Hi Andy,

I see, I installed it from sources instead.
Maybe I could send you the compiled jar, that should be easier for you.


On 7 Jun 2017, at 12:54, Andy Pattrick <<>>

Hi Marco,

Thanks for your reply. That's exactly what I would like to do but unfortunately I am running
guacamole in docker so I'm not sure I can use this patch very easily. Hopefully this will
find it's way into the official docker image.

Cheers Andy

From: Marco Casavecchia Morganti [<>]
Sent: 07 June 2017 10:37
Subject: Re: LDAP_USER_BASE_DN pointing to an AD Security Group

I developed a small patch for the guacamole-auth-ldap extension that allows you to specify
in the a new property: ldap-users-filter.

Basically if you apply the patch, you can add an LDAP condition that must be satisfied by
the users to become guacamole users. So if you set it as something like this:
ldap-users-filter: memberOf=CN=Guacamole,OU=Service Gropus,OU=Domain,DC=my,DC=lan
only the users that belongs to the specified group will be listed in the guacamole interface
and will be allowed to access Guacamole.

At that time I tried to submit the patch to the developers but I wasn’t able to set up the
whole environment needed to do that, so I gave up, hoping that my patch would be added by
someone else sooner or later.

The patch is very simple and you can find it attached to this mail.
I applied it successfully to the latest incubating releases (0.9.11 and 0.9.12), I hope it
will be helpful.

Best Regards


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