Podrška #14792
Zatvoren
remote X11 Error: Can't open display: localhost:10.0
Dodano od Ernad Husremović prije skoro 18 godina. Izmjenjeno prije više od 17 godina.
0%
Opis
ne mogu remotely pokrenuti X11 aplikacije sa svog desktop-a, kada pristpuim dev-infra-2, smraka-1 itd ...
jedino što radi je pristup dosbox-sigma-com.net (tu je trenutno feisty ? da li je to uzrok)
zaključak:
/etc/hosts mora imati ovu postavku:
127.0.0.1 localhost.localdomain localhost
Izmjenjeno od Ernad Husremović prije skoro 18 godina
dev-infra-2:/etc/ssh/sshd_config
X11Forwarding yes X11DisplayOffset 10 #X11UseLocalhost no
root@dev-infra-2:~# xclock
Error: Can't open display: localhost:10.0
Izmjenjeno od Ernad Husremović prije skoro 18 godina
http://csociety.ecn.purdue.edu/~sigos/projects/ssh/forwarding/
Automagic X11 forwarding¶
SSH will, by default, automatically set up X11 forwarding for you if you run the ssh client with your $DISPLAY environment variable set (i.e. if you are using X11). You can turn off this behaviour with command line switches as well as with the config file in your $HOME/.ssh directory. For most users, this is enough; it works quite transparently.
Underlying mechanism¶
SSH does several things to facilitate "more secure" X11 forwarding. I try to use the terms "ssh client", "ssh server", "X client", and "X server" in this section to help clarify things. Remember that the X server is the program that runs on your display and puts things into your framebuffer; the X clients are the programs (like xterm, fvwm, netscape) that connect to your display to tell it what to draw where. When you are using ssh and X11 you are usually running the ssh client on the same machine that the X server is running on (the machine you are sitting in front of), and the ssh server is running on the remote system, and you are running some X clients on the remote system and the ssh server is forwarding them to the ssh client which is forwarding them to the X server. Whew.
- Forwarding traffic.
SSH will allocate a "fake" display on the remote system and attach a "dummy" X server to it. It forwards traffic sent to the fake display through the *encrypted tunne*l. On the other end, it then gets sent to whatever display your $DISPLAY variable pointed to on the ssh client system.
SSH will automatically set your DISPLAY variable on the remote system to the "fake" server.
...
Izmjenjeno od Ernad Husremović prije skoro 18 godina
trebamo li xserver-xorg na remote strani ?¶
ne trebamo, očeivano:
root@dosbox:~# apt-get remove xserver-xorg
i nakon toga stvar radi ...
Izmjenjeno od Ernad Husremović prije skoro 18 godina
hernad@nmraka-1:~$ ssh -Y -C -v fmk@dosbox.sigma-com.net
OpenSSH_4.7p1 Debian-8ubuntu1.2, OpenSSL 0.9.8g 19 Oct 2007 debug1: Reading configuration data /home/hernad/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to dosbox.sigma-com.net [192.168.45.183] port 22. debug1: Connection established. debug1: identity file /home/hernad/.ssh/git-b-out-ba type 1 debug1: identity file /home/hernad/.ssh/identity type 0 debug1: identity file /home/hernad/.ssh/id_rsa type 1 debug1: identity file /home/hernad/.ssh/id_dsa type 2 debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3p2 Debian-8ubuntu1 debug1: match: OpenSSH_4.3p2 Debian-8ubuntu1 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_4.7p1 Debian-8ubuntu1.2 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-cbc hmac-md5 zlib@openssh.com debug1: kex: client->server aes128-cbc hmac-md5 zlib@openssh.com debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'dosbox.sigma-com.net' is known and matches the RSA host key. debug1: Found key in /home/hernad/.ssh/known_hosts:31 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Offering public key: /home/hernad/.ssh/id_rsa debug1: Authentications that can continue: publickey,password debug1: Offering public key: /home/hernad/.ssh/id_dsa debug1: Authentications that can continue: publickey,password debug1: Offering public key: /home/hernad/.ssh/git-b-out-ba debug1: Authentications that can continue: publickey,password debug1: Next authentication method: password fmk@dosbox.sigma-com.net's password: debug1: Enabling compression at level 6. <<<<<<<<<<<<<<<<<<<<<<<<<<<< debug1: Authentication succeeded (password). debug1: channel 0: new [client-session] debug1: Entering interactive session. debug1: Requesting X11 forwarding with authentication spoofing. <<<<<<<<<<<<<<< debug1: Sending environment. debug1: Sending env LANG = bs_BA.UTF-8 Linux dosbox.sigma-com.net 2.6.18-053.6hernad3-openvz #1 SMP Sat Feb 16 15:59:27 CET 2008 i686 ...
Izmjenjeno od Ernad Husremović prije skoro 18 godina
na dosbox.sigma-com.net radi
$ xclock
radi i kada se prijavim kao root i kao fmk
Izmjenjeno od Ernad Husremović prije skoro 18 godina
hah ...
kada sam podesio
/etc/hosts
127.0.0.1 localhost.localdomain localhost
root@dev-infra-2:~# ping localhost
PING localhost.localdomain (127.0.0.1) 56(84) bytes of data. 64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=1 ttl=64 time=0.028 ms
stvar radi ko melčin horoz
Izmjenjeno od Ernad Husremović prije više od 17 godina
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