X2Go Bug report logs -
#1520
Proxy-Server - SSH - strong Cipher crash x2Go-Client
Reported by: <Marian.Schwarcz@dlr.de>
Date: Thu, 14 Jan 2021 07:50:02 UTC
Severity: normal
Found in version 4.1.2.2-2020.02.13
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Bug#1520
; Package x2goclient
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(Thu, 14 Jan 2021 07:50:02 GMT) (full text, mbox, link).
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Message #5 received at submit@bugs.x2go.org (full text, mbox, reply):
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Package: x2goClient
Version: 4.1.2.2-2020.02.13
Host-System: Windows 10, und Windows Server 2012 R2 (German Language)
Installations-Typ: Recommended (Default)
*** Problem Description ***
When using x2GoClient via jumpserver (as SSH-Proxy-Server), then is X2GoClient automatic closed (without any Information). Problem are the SSH-Strong-Ciphers, which are configured in SSHd on Jumpserver. Strong Ciphers => x2GoClient crashed. If default Ciphers => x2GoClient and connection works.
*** X2GoClient - Configuration ***
Sitzungsname: test
Pfad: /
Host: ziel-server
Login: test_ye
SSH-Port: 22
Proxy-Server für SSH-Verbindung verwenden
SSH
Host: jumpserver
Port: 22
Gleiche Anmeldung wie für X2Go-Server
Gleiches Kennwort wie für X2Go-Server
XFCE
*** Jumpserver Configuration) ***
Jumpserver SSHd Config: /etc/ssh/sshd_config (CentOS 7)
Ciphers aes128-ctr,aes192-ctr,aes256-ctr
The ciphers are used for strong Encryption. Then access from x2GoClient via jumpserver cannot handle this.
------
When the Cipher-Restriction is not configured:
Jumpserver SSHd Confg: (CentOS 7)
#Ciphers aes128-ctr,aes192-ctr,aes256-ctr
then the connection from x2GoClient via jumpserver to Destination X2Go-Server does work.
I hope I provided all needed information for you. Let me know if this can be patched, or does our Company need to search for other solution.
Thank you.
Best regards,
Marián Schwarcz
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Last modified:
Fri Feb 26 10:21:19 2021;
Machine Name:
ymir.das-netzwerkteam.de
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