如何优雅的远程办公

Ubuntu 配置SSH

快放假了，实验室的主机抱不走，来配一波SSH，结合VNC Viewer 一起用着。

Ubuntu 固定ip

因为是GNOME，所以直接在图形化界面下设置，参考

配置SSH

首先Ubuntu

sudo apt-get install openssh-server sudo /etc/init.d/ssh start

配置图形化远程连接

用了vnc。这块遇到了不少问题，

参考1 参考2

使用Ubuntu 安装x11vnc

sudo apt-get install x11vnc

配置vnc密码

x11vnc -storepasswd

启动vnc服务

x11vnc -forever -shared -rfbauth ~/.vnc/passwd

验证是否启动服务

ps -aux | grep x11vnc

查看端口情况

netstat -nap |grep 5900

遇到问题1:

The connection closed unexpectedly.

解决方法：一开始尝试了无数种手段，最后简单解决。因为从学校回到家挂着了学校的VPN。从一篇CSDN看到要在preference中proxy选择Do not use a proxy(暂时还没想到为啥，不过解决了问题)

遇到问题2:

终于连上了，但是界面灰屏，像小时候的电视没信号，鼠标变成一个X。

05/01/2021 09:38:15 passing arg to libvncserver: -rfbauth
05/01/2021 09:38:15 passing arg to libvncserver: /root/.vnc/passwd
05/01/2021 09:38:15 x11vnc version: 0.9.13 lastmod: 2011-08-10  pid: 32025
05/01/2021 09:38:15 XOpenDisplay("") failed.
05/01/2021 09:38:15 Trying again with XAUTHLOCALHOSTNAME=localhost ...
05/01/2021 09:38:15 
05/01/2021 09:38:15 *** XOpenDisplay failed. No -display or DISPLAY.
05/01/2021 09:38:15 *** Trying ":0" in 4 seconds.  Press Ctrl-C to abort.
05/01/2021 09:38:15 *** 1 2 3 4 
No protocol specified
05/01/2021 09:38:19 XOpenDisplay(":0") failed.
05/01/2021 09:38:19 Trying again with XAUTHLOCALHOSTNAME=localhost ...
No protocol specified
05/01/2021 09:38:19 XOpenDisplay(":0") failed.
05/01/2021 09:38:19 Trying again with unset XAUTHLOCALHOSTNAME ...
No protocol specified
05/01/2021 09:38:19 

05/01/2021 09:38:19 ***************************************
05/01/2021 09:38:19 *** XOpenDisplay failed (:0)

*** x11vnc was unable to open the X DISPLAY: ":0", it cannot continue.
*** There may be "Xlib:" error messages above with details about the failure.

Some tips and guidelines:

** An X server (the one you wish to view) must be running before x11vnc is
   started: x11vnc does not start the X server.  (however, see the -create
   option if that is what you really want).

** You must use -display <disp>, -OR- set and export your $DISPLAY
   environment variable to refer to the display of the desired X server.
 - Usually the display is simply ":0" (in fact x11vnc uses this if you forget
   to specify it), but in some multi-user situations it could be ":1", ":2",
   or even ":137".  Ask your administrator or a guru if you are having
   difficulty determining what your X DISPLAY is.

** Next, you need to have sufficient permissions (Xauthority) 
   to connect to the X DISPLAY.   Here are some Tips:

 - Often, you just need to run x11vnc as the user logged into the X session.
   So make sure to be that user when you type x11vnc.
 - Being root is usually not enough because the incorrect MIT-MAGIC-COOKIE
   file may be accessed.  The cookie file contains the secret key that
   allows x11vnc to connect to the desired X DISPLAY.
 - You can explicitly indicate which MIT-MAGIC-COOKIE file should be used
   by the -auth option, e.g.:
       x11vnc -auth /home/someuser/.Xauthority -display :0
       x11vnc -auth /tmp/.gdmzndVlR -display :0
   you must have read permission for the auth file.
   See also '-auth guess' and '-findauth' discussed below.

** If NO ONE is logged into an X session yet, but there is a greeter login
   program like "gdm", "kdm", "xdm", or "dtlogin" running, you will need
   to find and use the raw display manager MIT-MAGIC-COOKIE file.
   Some examples for various display managers:

     gdm:     -auth /var/gdm/:0.Xauth
              -auth /var/lib/gdm/:0.Xauth
     kdm:     -auth /var/lib/kdm/A:0-crWk72
              -auth /var/run/xauth/A:0-crWk72
     xdm:     -auth /var/lib/xdm/authdir/authfiles/A:0-XQvaJk
     dtlogin: -auth /var/dt/A:0-UgaaXa

   Sometimes the command "ps wwwwaux | grep auth" can reveal the file location.

   Starting with x11vnc 0.9.9 you can have it try to guess by using:

              -auth guess

   (see also the x11vnc -findauth option.)

   Only root will have read permission for the file, and so x11vnc must be run
   as root (or copy it).  The random characters in the filenames will of course
   change and the directory the cookie file resides in is system dependent.

See also: http://www.karlrunge.com/x11vnc/faq.html

问题3: 首先 x11vnc 和vncserver有什么区别？

vncserver 是

放弃以上的东西，现在选择从官网文档入手

wget https://www.realvnc.com/download/file/vnc.files/VNC-Server-6.7.2-Linux-x86.deb

配置来电自动开机

这个需要在bios里面进行配置，如何进入bios根据服务器的品牌而定。我这边的dell进入bios通常是按F2。

在这里面我选择了第三条。

配置网关自动登录

在这一步中我选择写个脚本，自动填入学号密码然后登录网关。

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