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Posted to user@guacamole.apache.org by Carolin Baumgartner <la...@angry-red-pla.net> on 2023/04/18 11:44:46 UTC
List of security types is ZERO, expecting an error to follow
Hi all
I have an annoying issue with my guacamole / tightvnc setup. I can
connect to my system only once. If the connection dies for whatever
reason (usually hibernation of system running the browser client), I
cannot reconnect to the VNC connection w/o restarting vncserver.
I can connect to guac, but when I try to resume the VNC connection I see
an error. When I check syslog on the server, I see the following:
"List of security types is ZERO, expecting an error to follow"
I have to restart vncserver to reconnect.
Is that a guac issue or rather a tightvnc one? Any ideas? Is there any
more information needed from my side to debug?
best regards
Carolin
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Re: List of security types is ZERO, expecting an error to follow
Posted by Shigeki Sawamura <sh...@whitestars.ne.jp>.
Hello.
Based on your logs, it looks like you should reinstall VNC Server.
I can't say for sure because I don't know the date and time, but it seems that the VNC Server is down after the connection is completed.
Try connecting with ssh instead of VNC and see if it crashes.
If it doesn't, Guacamole probably isn't the culprit.
Best Regards,
On 2023/04/19 水 午後 03:43, Carolin Baumgartner wrote:
> Hi
>
> it did not help. This morning I saw the same issue again:
>
> guacd[955]: Creating new client for protocol "vnc"
> guacd[955]: guacd[955]: INFO:#011Creating new client for protocol "vnc"
> guacd[955]: guacd[955]: INFO:#011Connection ID is "$93528a63-e83d-47e4-8b73-41c9a8ff0f75"
> guacd[955]: Connection ID is "$93528a63-e83d-47e4-8b73-41c9a8ff0f75"
> guacd[112815]: Cursor rendering: local
> guacd[112815]: guacd[112815]: INFO:#011Cursor rendering: local
> guacd[112815]: guacd[112815]: INFO:#011User "@bc02b9c3-1e0f-490d-bd7f-ea99247226f8" joined connection "$93528a63-e83d-47e4-8b73-41c9a8ff0f75" (1 users now present)
> guacd[112815]: guacd[112815]: ERROR:#011Unable to connect to VNC server.
> guacd[112815]: User "@bc02b9c3-1e0f-490d-bd7f-ea99247226f8" joined connection "$93528a63-e83d-47e4-8b73-41c9a8ff0f75" (1 users now present)
> guacd[112815]: VNC server supports protocol version 3.8 (viewer 3.8)
> guacd[112815]: List of security types is ZERO, expecting an error to follow
> guacd[112815]: VNC connection failed: Too many authentication failures
> guacd[112815]: Unable to connect to VNC server.
> guacd[112815]: User "@bc02b9c3-1e0f-490d-bd7f-ea99247226f8" disconnected (0 users remain)
> guacd[112815]: guacd[112815]: INFO:#011User "@bc02b9c3-1e0f-490d-bd7f-ea99247226f8" disconnected (0 users remain)
> guacd[112815]: guacd[112815]: INFO:#011Last user of connection "$93528a63-e83d-47e4-8b73-41c9a8ff0f75" disconnected
> guacd[112815]: Last user of connection "$93528a63-e83d-47e4-8b73-41c9a8ff0f75" disconnected
> guacd[955]: Connection "$93528a63-e83d-47e4-8b73-41c9a8ff0f75" removed.
> guacd[955]: guacd[955]: INFO:#011Connection "$93528a63-e83d-47e4-8b73-41c9a8ff0f75" removed.
>
> Any ideas?
>
> best regards
> Carolin
>
> On 4/18/23 17:13, Carolin Baumgartner wrote:
>> Hi
>>
>> I configured it now and will keep an eye on it. Should know by tomorrow or end of this week
>>
>> best regards
>> Carolin
>>
>> On 4/18/23 14:45, Shigeki Sawamura wrote:
>>> Hello.
>>>
>>> If you daemonize vncserver, will it not come back even if it is disconnected?
>>>
>>> Sample Setting
>>> https://bytexd.com/how-to-install-configure-vnc-server-on-ubuntu/
>>>
>>> Best Regards,
>>>
>>>
>>> On 2023/04/18 火 午後 09:10, Carolin Baumgartner wrote:
>>>> Good point, sorry
>>>>
>>>> lsb_release -a
>>>> No LSB modules are available.
>>>> Distributor ID: Ubuntu
>>>> Description: Ubuntu 22.04.2 LTS
>>>> Release: 22.04
>>>> Codename: jammy
>>>>
>>>>
>>>> Guacamole proxy daemon (guacd) version 1.4.0
>>>>
>>>>
>>>> ii tightvncpasswd 1:1.3.10-5 amd64 virtual network computing password tool
>>>> ii tightvncserver 1:1.3.10-5 amd64 virtual network computing server software
>>>>
>>>>
>>>> best regards
>>>> Carolin
>>>>
>>>> On 4/18/23 14:07, Shigeki Sawamura wrote:
>>>>> Hello.
>>>>>
>>>>> What is your host OS?
>>>>> What version of Guacamole?
>>>>> What version of TightVNC?
>>>>>
>>>>> Here on Ubuntu 20.04.6 LTS+Guacamole 1.5.1+TightVNC 2.8.75, I've tried connecting and disconnecting repeatedly with no errors.
>>>>>
>>>>> Best Regards,
>>>>>
>>>>>
>>>>> On 2023/04/18 火 午後 08:44, Carolin Baumgartner wrote:
>>>>>> Hi all
>>>>>>
>>>>>> I have an annoying issue with my guacamole / tightvnc setup. I can connect to my system only once. If the connection dies for whatever reason (usually hibernation of system running the browser client), I cannot reconnect to the VNC connection w/o restarting vncserver.
>>>>>>
>>>>>> I can connect to guac, but when I try to resume the VNC connection I see an error. When I check syslog on the server, I see the following:
>>>>>>
>>>>>> "List of security types is ZERO, expecting an error to follow"
>>>>>>
>>>>>> I have to restart vncserver to reconnect.
>>>>>>
>>>>>> Is that a guac issue or rather a tightvnc one? Any ideas? Is there any more information needed from my side to debug?
>>>>>>
>>>>>> best regards
>>>>>> Carolin
>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>>>>>> For additional commands, e-mail: user-help@guacamole.apache.org
>>>>>>
>>>>>>
>>>>>
>>>>> ---------------------------------------------------------------------
>>>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>>>>> For additional commands, e-mail: user-help@guacamole.apache.org
>>>>>
>>>>
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>>>> For additional commands, e-mail: user-help@guacamole.apache.org
>>>>
>>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
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>>>
>>
>>
>> ---------------------------------------------------------------------
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>>
>
>
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Re: List of security types is ZERO, expecting an error to follow
Posted by Carolin Baumgartner <la...@angry-red-pla.net>.
Hi
it did not help. This morning I saw the same issue again:
guacd[955]: Creating new client for protocol "vnc"
guacd[955]: guacd[955]: INFO:#011Creating new client for protocol "vnc"
guacd[955]: guacd[955]: INFO:#011Connection ID is
"$93528a63-e83d-47e4-8b73-41c9a8ff0f75"
guacd[955]: Connection ID is "$93528a63-e83d-47e4-8b73-41c9a8ff0f75"
guacd[112815]: Cursor rendering: local
guacd[112815]: guacd[112815]: INFO:#011Cursor rendering: local
guacd[112815]: guacd[112815]: INFO:#011User
"@bc02b9c3-1e0f-490d-bd7f-ea99247226f8" joined connection
"$93528a63-e83d-47e4-8b73-41c9a8ff0f75" (1 users now present)
guacd[112815]: guacd[112815]: ERROR:#011Unable to connect to VNC server.
guacd[112815]: User "@bc02b9c3-1e0f-490d-bd7f-ea99247226f8" joined
connection "$93528a63-e83d-47e4-8b73-41c9a8ff0f75" (1 users now present)
guacd[112815]: VNC server supports protocol version 3.8 (viewer 3.8)
guacd[112815]: List of security types is ZERO, expecting an error to follow
guacd[112815]: VNC connection failed: Too many authentication failures
guacd[112815]: Unable to connect to VNC server.
guacd[112815]: User "@bc02b9c3-1e0f-490d-bd7f-ea99247226f8" disconnected
(0 users remain)
guacd[112815]: guacd[112815]: INFO:#011User
"@bc02b9c3-1e0f-490d-bd7f-ea99247226f8" disconnected (0 users remain)
guacd[112815]: guacd[112815]: INFO:#011Last user of connection
"$93528a63-e83d-47e4-8b73-41c9a8ff0f75" disconnected
guacd[112815]: Last user of connection
"$93528a63-e83d-47e4-8b73-41c9a8ff0f75" disconnected
guacd[955]: Connection "$93528a63-e83d-47e4-8b73-41c9a8ff0f75" removed.
guacd[955]: guacd[955]: INFO:#011Connection
"$93528a63-e83d-47e4-8b73-41c9a8ff0f75" removed.
Any ideas?
best regards
Carolin
On 4/18/23 17:13, Carolin Baumgartner wrote:
> Hi
>
> I configured it now and will keep an eye on it. Should know by
> tomorrow or end of this week
>
> best regards
> Carolin
>
> On 4/18/23 14:45, Shigeki Sawamura wrote:
>> Hello.
>>
>> If you daemonize vncserver, will it not come back even if it is
>> disconnected?
>>
>> Sample Setting
>> https://bytexd.com/how-to-install-configure-vnc-server-on-ubuntu/
>>
>> Best Regards,
>>
>>
>> On 2023/04/18 火 午後 09:10, Carolin Baumgartner wrote:
>>> Good point, sorry
>>>
>>> lsb_release -a
>>> No LSB modules are available.
>>> Distributor ID: Ubuntu
>>> Description: Ubuntu 22.04.2 LTS
>>> Release: 22.04
>>> Codename: jammy
>>>
>>>
>>> Guacamole proxy daemon (guacd) version 1.4.0
>>>
>>>
>>> ii tightvncpasswd 1:1.3.10-5 amd64 virtual network computing
>>> password tool
>>> ii tightvncserver 1:1.3.10-5 amd64 virtual network computing server
>>> software
>>>
>>>
>>> best regards
>>> Carolin
>>>
>>> On 4/18/23 14:07, Shigeki Sawamura wrote:
>>>> Hello.
>>>>
>>>> What is your host OS?
>>>> What version of Guacamole?
>>>> What version of TightVNC?
>>>>
>>>> Here on Ubuntu 20.04.6 LTS+Guacamole 1.5.1+TightVNC 2.8.75, I've
>>>> tried connecting and disconnecting repeatedly with no errors.
>>>>
>>>> Best Regards,
>>>>
>>>>
>>>> On 2023/04/18 火 午後 08:44, Carolin Baumgartner wrote:
>>>>> Hi all
>>>>>
>>>>> I have an annoying issue with my guacamole / tightvnc setup. I can
>>>>> connect to my system only once. If the connection dies for
>>>>> whatever reason (usually hibernation of system running the browser
>>>>> client), I cannot reconnect to the VNC connection w/o restarting
>>>>> vncserver.
>>>>>
>>>>> I can connect to guac, but when I try to resume the VNC connection
>>>>> I see an error. When I check syslog on the server, I see the
>>>>> following:
>>>>>
>>>>> "List of security types is ZERO, expecting an error to follow"
>>>>>
>>>>> I have to restart vncserver to reconnect.
>>>>>
>>>>> Is that a guac issue or rather a tightvnc one? Any ideas? Is there
>>>>> any more information needed from my side to debug?
>>>>>
>>>>> best regards
>>>>> Carolin
>>>>>
>>>>> ---------------------------------------------------------------------
>>>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>>>>> For additional commands, e-mail: user-help@guacamole.apache.org
>>>>>
>>>>>
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>>>> For additional commands, e-mail: user-help@guacamole.apache.org
>>>>
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>>> For additional commands, e-mail: user-help@guacamole.apache.org
>>>
>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>> For additional commands, e-mail: user-help@guacamole.apache.org
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
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>
---------------------------------------------------------------------
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Re: List of security types is ZERO, expecting an error to follow
Posted by Carolin Baumgartner <la...@angry-red-pla.net>.
Hi
I configured it now and will keep an eye on it. Should know by tomorrow
or end of this week
best regards
Carolin
On 4/18/23 14:45, Shigeki Sawamura wrote:
> Hello.
>
> If you daemonize vncserver, will it not come back even if it is
> disconnected?
>
> Sample Setting
> https://bytexd.com/how-to-install-configure-vnc-server-on-ubuntu/
>
> Best Regards,
>
>
> On 2023/04/18 火 午後 09:10, Carolin Baumgartner wrote:
>> Good point, sorry
>>
>> lsb_release -a
>> No LSB modules are available.
>> Distributor ID: Ubuntu
>> Description: Ubuntu 22.04.2 LTS
>> Release: 22.04
>> Codename: jammy
>>
>>
>> Guacamole proxy daemon (guacd) version 1.4.0
>>
>>
>> ii tightvncpasswd 1:1.3.10-5 amd64
>> virtual network computing password tool
>> ii tightvncserver 1:1.3.10-5 amd64
>> virtual network computing server software
>>
>>
>> best regards
>> Carolin
>>
>> On 4/18/23 14:07, Shigeki Sawamura wrote:
>>> Hello.
>>>
>>> What is your host OS?
>>> What version of Guacamole?
>>> What version of TightVNC?
>>>
>>> Here on Ubuntu 20.04.6 LTS+Guacamole 1.5.1+TightVNC 2.8.75, I've
>>> tried connecting and disconnecting repeatedly with no errors.
>>>
>>> Best Regards,
>>>
>>>
>>> On 2023/04/18 火 午後 08:44, Carolin Baumgartner wrote:
>>>> Hi all
>>>>
>>>> I have an annoying issue with my guacamole / tightvnc setup. I can
>>>> connect to my system only once. If the connection dies for whatever
>>>> reason (usually hibernation of system running the browser client),
>>>> I cannot reconnect to the VNC connection w/o restarting vncserver.
>>>>
>>>> I can connect to guac, but when I try to resume the VNC connection
>>>> I see an error. When I check syslog on the server, I see the
>>>> following:
>>>>
>>>> "List of security types is ZERO, expecting an error to follow"
>>>>
>>>> I have to restart vncserver to reconnect.
>>>>
>>>> Is that a guac issue or rather a tightvnc one? Any ideas? Is there
>>>> any more information needed from my side to debug?
>>>>
>>>> best regards
>>>> Carolin
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>>>> For additional commands, e-mail: user-help@guacamole.apache.org
>>>>
>>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>>> For additional commands, e-mail: user-help@guacamole.apache.org
>>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>> For additional commands, e-mail: user-help@guacamole.apache.org
>>
>>
>
> ---------------------------------------------------------------------
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>
---------------------------------------------------------------------
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Re: List of security types is ZERO, expecting an error to follow
Posted by Shigeki Sawamura <sh...@whitestars.ne.jp>.
Hello.
If you daemonize vncserver, will it not come back even if it is disconnected?
Sample Setting
https://bytexd.com/how-to-install-configure-vnc-server-on-ubuntu/
Best Regards,
On 2023/04/18 火 午後 09:10, Carolin Baumgartner wrote:
> Good point, sorry
>
> lsb_release -a
> No LSB modules are available.
> Distributor ID: Ubuntu
> Description: Ubuntu 22.04.2 LTS
> Release: 22.04
> Codename: jammy
>
>
> Guacamole proxy daemon (guacd) version 1.4.0
>
>
> ii tightvncpasswd 1:1.3.10-5 amd64 virtual network computing password tool
> ii tightvncserver 1:1.3.10-5 amd64 virtual network computing server software
>
>
> best regards
> Carolin
>
> On 4/18/23 14:07, Shigeki Sawamura wrote:
>> Hello.
>>
>> What is your host OS?
>> What version of Guacamole?
>> What version of TightVNC?
>>
>> Here on Ubuntu 20.04.6 LTS+Guacamole 1.5.1+TightVNC 2.8.75, I've tried connecting and disconnecting repeatedly with no errors.
>>
>> Best Regards,
>>
>>
>> On 2023/04/18 火 午後 08:44, Carolin Baumgartner wrote:
>>> Hi all
>>>
>>> I have an annoying issue with my guacamole / tightvnc setup. I can connect to my system only once. If the connection dies for whatever reason (usually hibernation of system running the browser client), I cannot reconnect to the VNC connection w/o restarting vncserver.
>>>
>>> I can connect to guac, but when I try to resume the VNC connection I see an error. When I check syslog on the server, I see the following:
>>>
>>> "List of security types is ZERO, expecting an error to follow"
>>>
>>> I have to restart vncserver to reconnect.
>>>
>>> Is that a guac issue or rather a tightvnc one? Any ideas? Is there any more information needed from my side to debug?
>>>
>>> best regards
>>> Carolin
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>>> For additional commands, e-mail: user-help@guacamole.apache.org
>>>
>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>> For additional commands, e-mail: user-help@guacamole.apache.org
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
> For additional commands, e-mail: user-help@guacamole.apache.org
>
>
---------------------------------------------------------------------
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Re: List of security types is ZERO, expecting an error to follow
Posted by Carolin Baumgartner <la...@angry-red-pla.net>.
Good point, sorry
lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.2 LTS
Release: 22.04
Codename: jammy
Guacamole proxy daemon (guacd) version 1.4.0
ii tightvncpasswd 1:1.3.10-5 amd64
virtual network computing password tool
ii tightvncserver 1:1.3.10-5 amd64
virtual network computing server software
best regards
Carolin
On 4/18/23 14:07, Shigeki Sawamura wrote:
> Hello.
>
> What is your host OS?
> What version of Guacamole?
> What version of TightVNC?
>
> Here on Ubuntu 20.04.6 LTS+Guacamole 1.5.1+TightVNC 2.8.75, I've tried
> connecting and disconnecting repeatedly with no errors.
>
> Best Regards,
>
>
> On 2023/04/18 火 午後 08:44, Carolin Baumgartner wrote:
>> Hi all
>>
>> I have an annoying issue with my guacamole / tightvnc setup. I can
>> connect to my system only once. If the connection dies for whatever
>> reason (usually hibernation of system running the browser client), I
>> cannot reconnect to the VNC connection w/o restarting vncserver.
>>
>> I can connect to guac, but when I try to resume the VNC connection I
>> see an error. When I check syslog on the server, I see the following:
>>
>> "List of security types is ZERO, expecting an error to follow"
>>
>> I have to restart vncserver to reconnect.
>>
>> Is that a guac issue or rather a tightvnc one? Any ideas? Is there
>> any more information needed from my side to debug?
>>
>> best regards
>> Carolin
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
>> For additional commands, e-mail: user-help@guacamole.apache.org
>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
> For additional commands, e-mail: user-help@guacamole.apache.org
>
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Re: List of security types is ZERO, expecting an error to follow
Posted by Shigeki Sawamura <sh...@whitestars.ne.jp>.
Hello.
What is your host OS?
What version of Guacamole?
What version of TightVNC?
Here on Ubuntu 20.04.6 LTS+Guacamole 1.5.1+TightVNC 2.8.75, I've tried connecting and disconnecting repeatedly with no errors.
Best Regards,
On 2023/04/18 火 午後 08:44, Carolin Baumgartner wrote:
> Hi all
>
> I have an annoying issue with my guacamole / tightvnc setup. I can connect to my system only once. If the connection dies for whatever reason (usually hibernation of system running the browser client), I cannot reconnect to the VNC connection w/o restarting vncserver.
>
> I can connect to guac, but when I try to resume the VNC connection I see an error. When I check syslog on the server, I see the following:
>
> "List of security types is ZERO, expecting an error to follow"
>
> I have to restart vncserver to reconnect.
>
> Is that a guac issue or rather a tightvnc one? Any ideas? Is there any more information needed from my side to debug?
>
> best regards
> Carolin
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@guacamole.apache.org
> For additional commands, e-mail: user-help@guacamole.apache.org
>
>
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