How to solve the problem with the availability of port 6000?

Question

linux

Hello.
OS CentOS 7 on Oracle VM.
I solve the problem of redirecting graphics from CentOS to XMING server on windows.

[[email protected] ~]$ DISPLAY=192.168.56.1:0.0; export DISPLAY

after a long wait for Oracle installer

[[email protected] database]$ ./runInstaller
Starting Oracle Universal Installer...

Checking Temp space: must be greater than 500 MB.   Actual 2424 MB    Passed
Checking swap space: must be greater than 150 MB.   Actual 2047 MB    Passed

decided to check the availability of port 6000 on which display 0 is running , the
check showed that telnet does not work

[[email protected] database]$ telnet 192.168.56.1 6000
Trying 192.168.56.1...
telnet: connect to address 192.168.56.1: Connection timed out

What is the problem and how to solve it?
ps
Checking from the machine on which XMING is installed - everything is OK, port 6000 is available.

Welcome to the Xming X Server
Vendor: Colin Harrison
Release: 6.9.0.31
FreeType2: 2.3.4
Contact: http://sourceforge.net/forum/?group_id=156984

C:\Software\Xming\Xming.exe :0 -clipboard -multiwindow 

XdmcpRegisterConnection: newAddress 192.168.56.1
winAdjustVideoModeShadowGDI - Using Windows display depth of 32 bits per pixel
winAllocateFBShadowGDI - Creating DIB with width: 1440 height: 900 depth: 32
winInitVisualsShadowGDI - Masks 00ff0000 0000ff00 000000ff BPRGB 8 d 24 bpp 32
glWinInitVisuals:1596: glWinInitVisuals
glWinInitVisualConfigs:1503: glWinInitVisualConfigs glWinSetVisualConfigs:1581: glWinSetVisualConfigs
init_visuals:1055: init_visuals
null screen fn ReparentWindow
null screen fn RestackWindow
InitQueue - Calling pthread_mutex_init
InitQueue - pthread_mutex_init returned
InitQueue - Calling pthread_cond_init
InitQueue - pthread_cond_init returned
winInitMultiWindowWM - Hello
winInitMultiWindowWM - Calling pthread_mutex_lock ()
winMultiWindowXMsgProc - Hello
winMultiWindowXMsgProc - Calling pthread_mutex_lock ()
glWinScreenProbe:1390: glWinScreenProbe
fixup_visuals:1303: fixup_visuals
init_screen_visuals:1336: init_screen_visuals
(--) 3 mouse buttons found
(--) Setting autorepeat to delay=500, rate=31
(--) winConfigKeyboard - Layout: "00000409" (00000409) 
(--) Using preset keyboard for "English (USA)" (409), type "7"
Could not init font path element C:\Software\Xming/fonts/misc/, removing from list!
Could not init font path element C:\Software\Xming/fonts/TTF/, removing from list!
Could not init font path element C:\Software\Xming/fonts/Type1/, removing from list!
Could not init font path element C:\Software\Xming/fonts/75dpi/, removing from list!
Could not init font path element C:\Software\Xming/fonts/100dpi/, removing from list!
Could not init font path element C:\Program Files\Xming\fonts\dejavu, removing from list!
Could not init font path element C:\Program Files\Xming\fonts\cyrillic, removing from list!
Could not init font path element C:\WINDOWS\Fonts, removing from list!
winInitMultiWindowWM - pthread_mutex_lock () returned.
winInitMultiWindowWM - pthread_mutex_unlock () returned.
winInitMultiWindowWM - DISPLAY=127.0.0.1:0.0
winMultiWindowXMsgProc - pthread_mutex_lock () returned.
winMultiWindowXMsgProc - pthread_mutex_unlock () returned.
winMultiWindowXMsgProc - DISPLAY=127.0.0.1:0.0
winProcEstablishConnection - Hello
winInitClipboard ()
winProcEstablishConnection - winInitClipboard returned.
winClipboardProc - Hello
DetectUnicodeSupport - Windows Vista
winClipboardProc - DISPLAY=127.0.0.1:0.0
winMultiWindowXMsgProc - XOpenDisplay () returned and successfully opened the display.
winInitMultiWindowWM - XOpenDisplay () returned and successfully opened the display.
winClipboardProc - XOpenDisplay () returned and successfully opened the display.
winWindowProc - WM_DISPLAYCHANGE - orig bpp: 32, last bpp: 32, new bpp: 32
winWindowProc - WM_DISPLAYCHANGE - new width: 1440 new height: 900

Answer 1

You do not need to set the DISPLAY variable, but forward xdmcp via ssh.
On machines with XWindow, this is done with "ssh -X removehost"
In your case, you need to look towards putty, there is X11 forwarding in the settings - binkd.spb.ru/xming/xming-putty.html
Well, in pictures https:// www.youtube.com/watch?v=YLAYfwUPj7s