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Posted to user@guacamole.apache.org by Lance Gropper <La...@encorehollywood.com> on 2019/04/29 17:46:21 UTC
Doesn't work with VNC servers
Hello All:
I've tried everything to connect to a system running VNC or RDP - nothing works. Latest attempt is to a Windows 10 system running TightVNC:
Apr 29 10:43:39 guacamole-post guacd[20282]: Creating new client for protocol "vnc"
Apr 29 10:43:39 guacamole-post guacd[20282]: Connection ID is "$c860c6e2-8965-4603-a5a8-e20cf2eba57c"
Apr 29 10:43:39 guacamole-post guacd[20405]: Cursor rendering: local
Apr 29 10:43:39 guacamole-post guacd[20405]: User "@f4c73444-0160-45d0-a2e8-2645f5be6d08" joined connection "$c860c6e2-8965-4603-a5a8-e20cf2eba57c" (1 users now present)
Apr 29 10:43:39 guacamole-post guacd[20405]: VNC server supports protocol version 3.8 (viewer 3.8)
Apr 29 10:43:39 guacamole-post guacd[20405]: We have 2 security types to read
Apr 29 10:43:39 guacamole-post guacd[20405]: 0) Received security type 2
Apr 29 10:43:39 guacamole-post guacd[20405]: Selecting security type 2 (0/2 in the list)
Apr 29 10:43:39 guacamole-post guacd[20405]: 1) Received security type 16
Apr 29 10:43:39 guacamole-post guacd[20405]: Selected Security Scheme 2
Apr 29 10:43:39 guacamole-post guacd[20405]: VNC connection failed: Authentication failed from 10.17.102.9
Apr 29 10:43:39 guacamole-post guacd[20405]: Unable to connect to VNC server.
Apr 29 10:43:39 guacamole-post kernel: guacd[20408]: segfault at 10 ip 00007f77bd29ddf2 sp 00007f77be4aab90 error 4 in libguac-client-vnc.so.0.0.0[7f77bd295000+13000]
Apr 29 10:43:39 guacamole-post server: Exception in thread "Thread-40" java.lang.IllegalStateException: Message will not be sent because the WebSocket session has been closed
Apr 29 10:43:39 guacamole-post server: at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.writeMessagePart(WsRemoteEndpointImplBase.java:387)
Apr 29 10:43:39 guacamole-post server: at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessage(WsRemoteEndpointImplBase.java:344)
Apr 29 10:43:39 guacamole-post server: at org.apache.tomcat.websocket.WsRemoteEndpointImplBase$TextMessageSendHandler.write(WsRemoteEndpointImplBase.java:788)
Apr 29 10:43:39 guacamole-post server: at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendPartialString(WsRemoteEndpointImplBase.java:252)
Apr 29 10:43:39 guacamole-post server: at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendString(WsRemoteEndpointImplBase.java:195)
Apr 29 10:43:39 guacamole-post server: at org.apache.tomcat.websocket.WsRemoteEndpointBasic.sendText(WsRemoteEndpointBasic.java:37)
Apr 29 10:43:39 guacamole-post server: at org.apache.guacamole.websocket.GuacamoleWebSocketTunnelEndpoint.sendInstruction(GuacamoleWebSocketTunnelEndpoint.java:152)
Apr 29 10:43:39 guacamole-post server: at org.apache.guacamole.websocket.GuacamoleWebSocketTunnelEndpoint.access$200(GuacamoleWebSocketTunnelEndpoint.java:53)
Apr 29 10:43:39 guacamole-post server: at org.apache.guacamole.websocket.GuacamoleWebSocketTunnelEndpoint$2.run(GuacamoleWebSocketTunnelEndpoint.java:253)
Apr 29 10:43:40 guacamole-post abrt-hook-ccpp: Process 20405 (guacd) of user 0 killed by SIGSEGV - ignoring (repeated crash)
Apr 29 10:43:40 guacamole-post guacd[20282]: Connection "$c860c6e2-8965-4603-a5a8-e20cf2eba57c" removed.
Lance
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RE: Doesn't work with VNC servers
Posted by Lance Gropper <La...@encorehollywood.com>.
I'll try it - I'm getting ready to blow off and reinstall everything anyway...
From: Mike Jumper <mj...@apache.org>
Sent: Monday, April 29, 2019 4:12 PM
To: user@guacamole.apache.org
Subject: Re: Doesn't work with VNC servers
[ CAUTION ]
This email originated outside Deluxe.
On Mon, Apr 29, 2019, 16:08 Lance Gropper <La...@encorehollywood.com>> wrote:
Hello Mike:
Except that is with TightVNC. With RealVNC, it says "Unknown authentication method used."
You may need to change RealVNC's settings. I believe their VNC server defaults to accepting only proprietary auth mechanisms that are only implemented in their proprietary client.
- Mike
[ CAUTION ]
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Re: Doesn't work with VNC servers
Posted by Mike Jumper <mj...@apache.org>.
On Mon, Apr 29, 2019, 16:08 Lance Gropper <La...@encorehollywood.com>
wrote:
> Hello Mike:
>
> Except that is with TightVNC. With RealVNC, it says "Unknown
> authentication method used."
>
You may need to change RealVNC's settings. I believe their VNC server
defaults to accepting only proprietary auth mechanisms that are only
implemented in their proprietary client.
- Mike
RE: Doesn't work with VNC servers
Posted by Lance Gropper <La...@encorehollywood.com>.
Hello Mike:
Except that is with TightVNC. With RealVNC, it says "Unknown authentication method used."
Lance
From: Mike Jumper <mj...@apache.org>
Sent: Monday, April 29, 2019 4:07 PM
To: user@guacamole.apache.org
Subject: Re: Doesn't work with VNC servers
[ CAUTION ]
This email originated outside Deluxe.
On Mon, Apr 29, 2019, 15:55 Lance Gropper <La...@encorehollywood.com>> wrote:
Hello Mike:
1.0.0 won't build on this system (known issue). Password was double-checked.
Triple check?
The cause of "authentication failure" really is exactly that. The only possibility is that the VNC server is rejecting the provided password.
- Mike
[ CAUTION ]
DO NOT open attachments or click links from unknown senders. Only respond if you can validate the senders legitimacy.
This e-mail and any attachments are intended only for use by the addressee(s) named herein and may contain confidential information. If you are not the intended recipient of this e-mail, you are hereby notified any dissemination, distribution or copying of this email and any attachments is strictly prohibited. If you receive this email in error, please immediately notify the sender by return email and permanently delete the original, any copy and any printout thereof. The integrity and security of e-mail cannot be guaranteed.
Re: Doesn't work with VNC servers
Posted by Mike Jumper <mj...@apache.org>.
On Mon, Apr 29, 2019, 15:55 Lance Gropper <La...@encorehollywood.com>
wrote:
> Hello Mike:
>
>
>
> 1.0.0 won't build on this system (known issue). Password was
> double-checked.
>
Triple check?
The cause of "authentication failure" really is exactly that. The only
possibility is that the VNC server is rejecting the provided password.
- Mike
RE: Doesn't work with VNC servers
Posted by Lance Gropper <La...@encorehollywood.com>.
Hello Mike:
1.0.0 won't build on this system (known issue). Password was double-checked.
Lance
From: Mike Jumper <mj...@apache.org>
Sent: Monday, April 29, 2019 3:52 PM
To: user@guacamole.apache.org
Subject: Re: Doesn't work with VNC servers
[ CAUTION ]
This email originated outside Deluxe.
On Mon, Apr 29, 2019 at 10:46 AM Lance Gropper <La...@encorehollywood.com>> wrote:
...
Apr 29 10:43:39 guacamole-post guacd[20282]: Creating new client for protocol "vnc"
...
Apr 29 10:43:39 guacamole-post guacd[20405]: Selected Security Scheme 2
Apr 29 10:43:39 guacamole-post guacd[20405]: VNC connection failed: Authentication failed from 10.17.102.9
Apr 29 10:43:39 guacamole-post guacd[20405]: Unable to connect to VNC server.
"Security scheme 2" is standard VNC authentication (a password). Double check that the password you specified in your configuration for the VNC connection in Guacamole is correct.
Apr 29 10:43:39 guacamole-post kernel: guacd[20408]: segfault at 10 ip 00007f77bd29ddf2 sp 00007f77be4aab90 error 4 in libguac-client-vnc.so.0.0.0[7f77bd295000+13000]
Assuming you are using 0.9.14 or older, please upgrade to 1.0.0. Older releases had an issue which would result in a segfault if the password provided for VNC was incorrect:
http://guacamole.apache.org/releases/1.0.0/#general-connection-stability<https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fguacamole.apache.org%2Freleases%2F1.0.0%2F%23general-connection-stability&data=02%7C01%7CLance.Gropper%40encorehollywood.com%7C00da85e6ba5b40c8466c08d6ccf572e8%7C8688c7c41f2a4115a918361023dde469%7C1%7C0%7C636921751899313950&sdata=lgr5kM%2FgkXT4yIYyR%2B0n19iWyefPK01UU0C8q%2BtpYus%3D&reserved=0>
https://issues.apache.org/jira/browse/GUACAMOLE-424<https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fissues.apache.org%2Fjira%2Fbrowse%2FGUACAMOLE-424&data=02%7C01%7CLance.Gropper%40encorehollywood.com%7C00da85e6ba5b40c8466c08d6ccf572e8%7C8688c7c41f2a4115a918361023dde469%7C1%7C0%7C636921751899323960&sdata=1d3B6QpobPrS2lx%2FJo%2FdhmPhWwRAjkkBMSq%2Fu2P5AEc%3D&reserved=0>
- Mike
[ CAUTION ]
DO NOT open attachments or click links from unknown senders. Only respond if you can validate the senders legitimacy.
This e-mail and any attachments are intended only for use by the addressee(s) named herein and may contain confidential information. If you are not the intended recipient of this e-mail, you are hereby notified any dissemination, distribution or copying of this email and any attachments is strictly prohibited. If you receive this email in error, please immediately notify the sender by return email and permanently delete the original, any copy and any printout thereof. The integrity and security of e-mail cannot be guaranteed.
Re: Doesn't work with VNC servers
Posted by Mike Jumper <mj...@apache.org>.
On Mon, Apr 29, 2019 at 10:46 AM Lance Gropper <
Lance.Gropper@encorehollywood.com> wrote:
> ...
>
> Apr 29 10:43:39 guacamole-post guacd[20282]: Creating new client for
> protocol "vnc"
>
> ...
>
> Apr 29 10:43:39 guacamole-post guacd[20405]: Selected Security Scheme 2
>
> Apr 29 10:43:39 guacamole-post guacd[20405]: VNC connection failed:
> Authentication failed from 10.17.102.9
>
> Apr 29 10:43:39 guacamole-post guacd[20405]: Unable to connect to VNC
> server.
>
"Security scheme 2" is standard VNC authentication (a password). Double
check that the password you specified in your configuration for the VNC
connection in Guacamole is correct.
Apr 29 10:43:39 guacamole-post kernel: guacd[20408]: segfault at 10 ip
> 00007f77bd29ddf2 sp 00007f77be4aab90 error 4 in
> libguac-client-vnc.so.0.0.0[7f77bd295000+13000]
>
Assuming you are using 0.9.14 or older, please upgrade to 1.0.0. Older
releases had an issue which would result in a segfault if the password
provided for VNC was incorrect:
http://guacamole.apache.org/releases/1.0.0/#general-connection-stability
https://issues.apache.org/jira/browse/GUACAMOLE-424
- Mike