Hello,

Thanks for the answer.

yes, I'm quite sure it's the home ISP connection the problem. It looks like guacamole frontend "restarts" the browser connection in the new version if it feels the user network is bad or unstable. I guess it's in the javascript part. Some screenshot in attachment

1) every user has a different workstation in the office, if I connect to their workstation I have no problems
2) I'll ask the helpdesk and see if there is something in common .
3) Yes, interface is kinda different, but nothing else changed in the infrastructure.

Regards,
Massimiliano Ballerini


Il 26/09/24 22:39, Ivanmarcus ha scritto:
Massimiliano,

In the past when I've had these sorts of issues the problem has turned out to be either with the external user's ISP, or something internal to their location. In the latter case this has included the user's children re-configuring the home network, or in some other way interfering with the Guacamole traffic.

Although it may have happened directly after your upgrade the scenario you've given suggests it's not likely to be your installation, given you have ~48 other users that have no issues. However here's some suggestions for troubleshooting:

(1) Do the users always connect to the same workstation? If so, could you have them connect to a different workstation (that others connect to with no problem), just to see if it made any difference? From what you've said I wouldn't expect it to, however it could be a worthwhile check.

(2) Is there anything different about these two users' machines/browsers compared to those users that have no issue?

(3) That's quite an upgrade, did you do anything else on your system and do you have a proxy involved? What do your logs say for the problem users?


On 27/09/24 02:28, Massimiliano Ballerini wrote:
Hello,

we recently updated our guacamole server from version 0.9 to 1.5.5 and we are having an issue with some few users.

Our architecture permits users at home to connect to their PC in the office with RDP. So the diagram is something like this:
user --> home ISP --> work ISP --> firewall --> guacamole server --> PC

2 of around 50 users seems to experience frequent disconnections web- side: the browser lose connection during the RDP session and then "reloads" the page, reconnecting to the PC, but then the RDP greetings/ disclaimer page pops up and the user has to click ok and wait for Windows reconnection. After that the user is connected again for a brief period.

Our helpdesk technicians could not reproduce the problem since they connected to the same PCs and did not experience any disconnection. We managed then to reproduce a similar problem generating a lot of traffic on the connection used to reach the guacamole server.

We think the home Internet connection of these 2 users is slow or low quality, and that is what is causing the malfunction, but that wasn't happening with the previous version of guacamole.

I searched online for a solution or even a timeout parameter i could increase to help these 2 users, but I'm finding only people having problems with connection:
guacamole guacd server <--> PC with RDP

and not

USER <--> guacamole web server (the one with tomcat to be clear).

I'm having problem with the latter. Has any of you experienced something similar?

Regards,
Massimiliano



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