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Old 04-19-2019, 09:01 AM
TXviking TXviking is offline
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Question X11 forwarding in Mojave

I upgraded to Mojave and to SecureCRT 8.5.3, but I can no longer do X11 forwarding over SSH.

I've tried the following so far:
- Verified X11 forwarding is enabled
- Verified that Enforce X11 authentication is DISabled
- SecureCRT Display variable set to "127.0.0.1:0.0" (this was the default)
- Verified that when I log in, the DISPLAY variable is set. It is, to localhost:10.0.
- Verified that the appropriate localhost entry exists in /etc/hosts on the remote server
- Verified XQuartz is installed and allowed to run by GateKeeper (it is, version 2.7.11.)
- Verified that I can start X11 apps locally on the Mac. I can, although in Mojave I had to run "export DISPLAY=:0" from a local terminal session before I was able to start X11 apps from the command line.

Still, when I try to start something as simple as xlogo, I get this error:

Error: Can't open display: localhost:10.0

If I skip SecureCRT and do ssh -X <remotehost>, X11 forwarding does work. Can anyone help me figure out what I'm doing wrong in SecureCRT?

If it matters, the remote system is a CentOS 7.6 system.
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Old 04-19-2019, 10:14 AM
bgagnon bgagnon is offline
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Join Date: Oct 2008
Posts: 4,048
Hi TXviking,

We will need to see Trace Options output of the connection.

Watch this video.

Or

See this forum post.

You can send the output to support@vandyke.com and reference "Attn Brenda - Forum Thread #13506".

NOTICE: The requested troubleshooting data may include sensitive information (usernames, passwords, publicly-accessible host names or IP addresses, etc.).

Please redact sensitive information that would not be appropriate for email communication prior to sending the requested information.

If there is sensitive information that must be conveyed in order to provide a complete picture of the scenario you're facing, please let us know and we will set up a secure upload mechanism that can be used.
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--Brenda

VanDyke Software
Technical Support
support@vandyke.com
(505) 332-5730
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