x2go-user October 2016

x2go-user@lists.x2go.org

21 participants
29 discussions

Re: [X2Go-User] ssh kex error
by is＠k4ts.net 13 Nov '18

13 Nov '18

Am 19.10.2015 17:06, schrieb Robert Dinse: > the new version of openssh disabled certain insecure > ciphers... Version7 is what you mean. I use 6.9 on both client and server. > you can add > the following line to your /etc/ssh/sshd_config manually enable the > insecure old ciphers: > > KexAlgorithms > curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 Adding these ciphers doesn't help - same algo error, Thats wired coz I can ssh to the server without any issues. > -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- > Eskimo North Linux Friendly Internet Access, Shell Accounts, and > Hosting. > Knowledgeable human assistance, not telephone trees or script > readers. > See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) > 246-6874. > > On Mon, 19 Oct 2015, is(a)k4ts.net wrote: > >> Date: Mon, 19 Oct 2015 15:12:43 +0200 >> From: is(a)k4ts.net >> To: x2go-user(a)lists.x2go.org >> Subject: [X2Go-User] ssh kex error >> >> hi, i'm not able to connect >> to my new hardened gentoo server using x2go. >> >> No matter which key type i select for the connection, >> the client (v. 4.0.5.0) terminates with the following: >> >> kex error : no match for method server host key algo: >> server [ssh-rsa,ssh-ed25519], client [ecdsa-sha2-nistp256] >> >> I have rsa and ed25519 keys on my client and server. >> >> sshing from the shell works like always. log is attached. >> >> do you have an idea, whats might wrong? >> >> thx, >> k4t >> >> k4tfish@e10 ~ $ ssh k4tfish@host >> OpenSSH_6.9p1-hpn14v5, OpenSSL 1.0.2d 9 Jul 2015 >> debug1: Reading configuration data /etc/ssh/ssh_config >> debug1: Connecting to host.net port 51822. >> debug1: Connection established. >> debug1: identity file /home/k4tfish/.ssh/id_rsa type 1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_rsa-cert type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_dsa type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_dsa-cert type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_ecdsa type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_ecdsa-cert type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_ed25519 type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_ed25519-cert type -1 >> debug1: Enabling compatibility mode for protocol 2.0 >> debug1: Local version string SSH-2.0-OpenSSH_6.9p1-hpn14v5 >> debug1: Remote protocol version 2.0, remote software version >> OpenSSH_6.9p1-hpn14v5 >> debug1: match: OpenSSH_6.9p1-hpn14v5 pat OpenSSH* compat 0x04000000 >> debug1: Authenticating to host...net:51822 as 'k4tfish' >> debug1: SSH2_MSG_KEXINIT sent >> debug1: SSH2_MSG_KEXINIT received >> debug1: AUTH STATE IS 0 >> debug1: REQUESTED ENC.NAME is 'chacha20-poly1305(a)openssh.com' >> debug1: kex: server->client chacha20-poly1305(a)openssh.com <implicit> >> none >> debug1: REQUESTED ENC.NAME is 'chacha20-poly1305(a)openssh.com' >> debug1: kex: client->server chacha20-poly1305(a)openssh.com <implicit> >> none >> debug1: expecting SSH2_MSG_KEX_ECDH_REPLY >> debug1: Server host key: ssh-ed25519 SHA256:xyz >> debug1: Host '[host.net]:51822' is known and matches the ED25519 host >> key. >> debug1: Found key in /home/k4tfish/.ssh/known_hosts:203 >> debug1: SSH2_MSG_NEWKEYS sent >> debug1: expecting SSH2_MSG_NEWKEYS >> debug1: SSH2_MSG_NEWKEYS received >> debug1: Roaming not allowed by server >> debug1: SSH2_MSG_SERVICE_REQUEST sent >> debug1: SSH2_MSG_SERVICE_ACCEPT received >> debug1: Authentications that can continue: >> publickey,password,keyboard-interactive >> debug1: Next authentication method: publickey >> debug1: Offering RSA public key: /home/k4tfish/.ssh/id_rsa >> debug1: Server accepts key: pkalg ssh-rsa blen 279 >> debug1: Authentication succeeded (publickey). >> Authenticated to host ([123.123.456.7]:51822). >> debug1: Final hpn_buffer_size = 2097152 >> debug1: HPN Disabled: 0, HPN Buffer Size: 2097152 >> debug1: channel 0: new [client-session] >> debug1: Enabled Dynamic Window Scaling >> debug1: Requesting no-more-sessions(a)openssh.com >> debug1: Entering interactive session. >> debug1: client_input_global_request: rtype hostkeys-00(a)openssh.com >> want_reply 0 >> debug1: Sending environment. >> debug1: Sending env LC_COLLATE = C >> debug1: Sending env LANG = en_US.utf8 >> >> _______________________________________________ >> x2go-user mailing list >> x2go-user(a)lists.x2go.org >> http://lists.x2go.org/listinfo/x2go-user >>

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Emacs crashes on start
by Roderick Johnstone 18 Sep '17

18 Sep '17

Hi I'm connecting from a Mac (X2Go Client v. 4.0.5.1 (Qt - 4.8.7)) to Fedora 24 with a xfce session using the x2goserver-4.0.1.19-11.fc24.x86_64 packages from the fedora repos. On starting emacs, I get the error below. This issue seems to have been around for a while in similar forms, but didn't affect me under Fedora 22. Is anyone in a position to confirm this issue on Fedora 24 and suggest a work around? I tried setting various environment variables suggested on various web pages for similar issues and in the bug report noted in the error message (and checked /etc/PROBLEMS), but nothing was effective. emacs starts fine in an xfce session at the console. Thanks Roderick Johnstone X protocol error: BadRequest (invalid request code or no such operation) on protocol request 131 When compiled with GTK, Emacs cannot recover from X disconnects. This is a GTK bug: https://bugzilla.gnome.org/show_bug.cgi?id=85715 For details, see etc/PROBLEMS. Fatal error 6: Aborted Backtrace: emacs[0x50ad3c] emacs[0x4f11ec] emacs[0x50ade3] emacs[0x4c0f60] emacs[0x4c58b6] emacs[0x4c593b] /lib64/libX11.so.6(_XError+0x12d)[0x2b5baa0ff57d] /lib64/libX11.so.6(+0x413e7)[0x2b5baa0fc3e7] /lib64/libX11.so.6(+0x414ad)[0x2b5baa0fc4ad] /lib64/libX11.so.6(_XReply+0x238)[0x2b5baa0fd478] /lib64/libX11.so.6(XQueryPointer+0x91)[0x2b5baa0f3351] /lib64/libgdk-3.so.0(+0x4da2a)[0x2b5ba8150a2a] /lib64/libgdk-3.so.0(+0x6a605)[0x2b5ba816d605] /lib64/libgdk-3.so.0(gdk_window_get_device_position_double+0x10b)[0x2b5ba8143d1b] /lib64/libgdk-3.so.0(gdk_window_get_device_position+0x2d)[0x2b5ba8143e1d] /lib64/libgtk-3.so.0(+0x321199)[0x2b5ba7b48199] /lib64/libgtk-3.so.0(+0x3216f4)[0x2b5ba7b486f4] /lib64/libgdk-3.so.0(+0x253d8)[0x2b5ba81283d8] /lib64/libglib-2.0.so.0(+0x4a173)[0x2b5ba97d0173] /lib64/libglib-2.0.so.0(g_main_context_dispatch+0x163)[0x2b5ba97cf703] emacs[0x5e0b78] emacs[0x5a6025] emacs[0x4fc1bc] emacs[0x4fdfdd] emacs[0x4ffc24] emacs[0x564642] emacs[0x4f16b4] emacs[0x5645e3] emacs[0x4f1670] emacs[0x4f5e6b] emacs[0x4f61c8] emacs[0x419b52] /lib64/libc.so.6(__libc_start_main+0xf1)[0x2b5bb17db731] emacs[0x41a639] Aborted (core dumped)

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Logging x2go connections?
by Grigory Shamov 04 May '17

04 May '17

Hi All, This perhaps is a trivial question: but is it possible to somehow log/check history of past x2go session on the server? -- Grigory Shamov Westgrid/ComputeCanada Site Lead University of Manitoba E2-588 EITC Building, (204) 474-9625

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multiwindow option and resizing an application window
by Dionne, Dennis P 09 Mar '17

09 Mar '17

Hello, I am using X2Go on RHEL 6.7 and I am very pleased with how well it works but I am having an issue when using X2Go with a custom application when I resize the application window. There are hundreds of other applications on our system that have no issue with resizing, it' just this one. This will happen every time I resize the app IF AND ONLY IF I start vcxsrv with "-multiwindow", if I start it any other way (-rootless, -fullscreen, -multimonitor) the app will resize fine. The problem is I then cannot resize the session window (resizing is only available in multiwindow mode apparently?). I am 100% aware that the application in question is at fault, however, it is very old, was produced by another company that will not give me the code and refuses to update it... I am also aware that this may be a VCXSrv issue and I can ask them as well but I was wondering if you all had run across something like this before. If you could give me some background on the differences between multiwindow vs "non-multiwindow" or could explain why multiwindow would fail I'd appreciate it. That may be a question for VCXSrv though. Setup: RHEL 6.7 X2Go Windows Client 4.0.5.1 (Windows 7 64bit) Server 4.0.1.19 Gnome 2.28 Thanks Dennis

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Shared Folders?
by KARL A. WOELFER 25 Jan '17

25 Jan '17

I am not able to get the basic Shared Folder capability to run. Debian 7 Linux OS on client and server, X2go V 4.0.3.0, and XFCE Desktop. Is there something fundamental preventing this from working? Thanks in advance, - KarlW

4 5

Folder sharing
by "BOTZ Franck (Administrateur Systèmes et Résea ux) - DDT 67/SIDSIC/Pôle Infra" 29 Nov '16

29 Nov '16

Hi ! So, there is my configuration : Terminal Hardware : HP t620 HP Thinpro (ubuntu 14.04 base) x2goclient 4.0.5.3 Broker Ubuntu server 16.04 64 LTS python-x2gobroker 0.0.3.1-0~934~ubuntu16.04.1 all X2Go Session Broker (Python modules) x2gobroker 0.0.3.1-0~934~ubuntu16.04.1 all X2Go Session Broker (executable) x2gobroker-loadchecker 0.0.3.1-0~934~ubuntu16.04.1 all X2Go Session Broker (load checker service) x2gobroker-ssh 0.0.3.1-0~934~ubuntu16.04.1 amd64 X2Go Session Broker (SSH broker) Server : Ubuntu Desktop 16.04 64 LTS libx2go-log-perl 4.1.0.0-0~1359~ubuntu16.04.1 all Perl X2Go::Log package libx2go-server-db-per 4.1.0.0-0~1359~ubuntu16.04.1 amd64 Perl X2Go::Server:DB package libx2go-server-perl 4.1.0.0-0~1359~ubuntu16.04.1 all Perl X2Go::Server package x2goagent 2:3.5.0.33-0~687~ubuntu16.04.1 all X2Go agent x2gobroker-agent 0.0.3.1-0~934~ubuntu16.04.1 amd64 X2Go Session Broker (remote agent) x2goclient 4.0.5.1-0~1103~ubuntu12.04.1 amd64 X2Go Client application (Qt4) x2goserver 4.1.0.0-0~1359~ubuntu16.04.1 amd64 X2Go server daemon scripts x2goserver-common 4.1.0.0-0~1359~ubuntu16.04.1 amd64 X2Go Server (common files) x2goserver-extensions 4.1.0.0-0~1359~ubuntu16.04.1 all X2Go Server (extension support) x2goserver-fmbindings 4.1.0.0-0~1359~ubuntu16.04.1 all X2Go Server (file manager bindings) x2goserver-printing 4.1.0.0-0~1359~ubuntu16.04.1 all X2Go server (printing support) x2goserver-xsession 4.1.0.0-0~1359~ubuntu16.04.1 I can connect from my t620 to the server trough the broker. I can resum/suspend a session. The system is functionnal. My next step is sharing a folder on the t620 (the folder used to mount a mass storage /tmp/tmpfs/media and access to it from the session open on the server. On the broker, my x2gobroker-sessionprofiles.conf : [DEFAULT] defsndport=true useiconv=false iconvfrom=UTF-8 #height=600 export= quality=9 #fullscreen=true #layout= #model= useexports=true #width=800 speed=2 soundsystem=pulse print=false sndport=4713 xinerama=true variant= usekbd=true fstunnel=true applications= multidisp=false sshproxyport=22 sound=true rootless=true iconvto=UTF-8 soundtunnel=true dpi=96 sshport=22 setdpi=0 pack=16m-jpeg directrdp=false user= [xfce] host=x2go-server-01 (10.0.0.1) name=XFCE command=XFCE type=auto fullscreen=true xinerama=false export="/tmp/tmpfs/media:1" broker-session-autologin=false usebrokerpass=true As you can see, in the xfce section, I export the "/tmp/tmpfs/media:1" directory. On the t620 my mass storage is mounted on /tmp/tmpfs/media/SomeUsbStick and I access it with the user who launch the x2goclient. When the session openned I see on the server : * the time to open session is longer with the export directive * the media directory appears is home directory * the media contained disk/_tmp_tmpfs_media directory * When I list _tmp_tmpfs_media i have "permission denied" * the mount command let me see (but brievely) a line like user(a)127.0.0.1 ... * the trash disappear So what can I do to access to my USB mass storage stick ? Sincerly Franck

1 1

Num Lock key in windows agent
by Olivier BILHAUT 24 Nov '16

24 Nov '16

Hi all. First of all, I'd like to congratulate all the contributors for this great work. X2go is a professional class tool for remote desktop. However... I ran into a really special thing using the windows agent in its last version (4.0.5). Sometimes, when you open the session, the "Num Lock" is usable, sometimes not. I mean, sometimes you may push the caps lock button and switch from arrows to Numeric keys, and sometimes the Key Pad is fully unusable. It happens only on windows agent as far as I know. All that I tried did not solve the issue. Did you already encounter that? Thanks. -- OB SySAdmin Fondation Hospitalière de la Miséricorde

2 2

x2goclient session icons not working
by Will Wagner 23 Nov '16

23 Nov '16

Hello, I have upgraded to 4.0.4.0 on win32. It's a minor thing but if I now set a session icon for a connection it is not displayed and I get blank instead. Is there something I need to do to get this to work? Thanks Will

3 6

X2Go Two-factor-authentication with SecurID
by swizz ly 23 Nov '16

23 Nov '16

5 16

terminating suspended sessions
by Sebastian T. 04 Nov '16

04 Nov '16

After some time unclosed sessions fill all the memory on the server. It is hard to discipline users to always close sessions -they just close the client instead. Is there any more elegant way of clearing all suspended sessions then the command I have here: for f in `/usr/sbin/x2golistsessions_root |grep \|S\| | cut -c-5`; do /usr/ bin/x2goterminate-session "$f" && kill "$f";done

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x2go-user October 2016