Krdc: Difference between revisions

Revision as of 13:34, 4 November 2017

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Krdc

KRDC Desktop Sharing Client - Use this tool to connect your computer to a the desktop of another computer to provide assistance or do work remotely. The serving computer could use e.g. Krfb.

Feature List

Connect to a remote computer (desktop view)
Uses common VNC protocol by default (VNC runs on Linux, Macintosh, Windows)
Can connect to Windows standard RDP protocol

Information

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Krdc is one of a pair of KDE programs - Krfb is the other. Krdc lets you log onto another computer remotely; either over a LAN or over the internet. Krfb lets you share your desktop through the local network with another user, probably somebody like the tech downstairs who you want to help you. Sharing your desktop can let her help you figure out something you are having trouble with. You can call the tech on the phone and be talking with her while she assists you. The tech can even "drive" your computer if you decide to let that happen.

Krdc is a client program. It must be matched by a server or "host" program (e.g., Krfb) that is running on another computer. In this explanation, we will use the terms "guest" and "host":

guest for the machine and user that is remote who you want to invite
host for the machine and you as the one who is sharing your desktop

You can refer to the Krfb page to learn more about the Krfb/Krdc process.

This explanation is, therefore, from the perspective of the technician who is going to work remotely as the "guest".

Steps to Connect

The native protocol of the Krbf/Krdc connection is VNC.

You will note that you, as a guest technician, can provide assistance to many different operating systems because the VNC protocol is widely used for desktop sharing. You are not limited to working with remote host KDE desktops; you can login to Windows and other systems as well.

Start Krdc (Kickoff button -> Applications -> Internet -> Krdc)
Type in the name or ip address of the host computer (this is a VNC protocol) (You'll need to obtain the ip address of the host from the host. Here are some examples:)
- Krfb(KDE3)--192.168.1.102:0 (identify the screen number after the colon)
- Krbf(KDE4)--192.168.1.102:5900 (identify the port after the colon)
- Gnome (TigerVNC)--192.168.1.102 (the port number is assumed)
Type in your user name and then the login password that the host requires. This will be saved in Kwallet by default which means you don't need to login every time you connect. If you are a technician servicing a host computer, you may need a new password every time you login.

When your mouse is within the window limits of the host's desktop, you can control the host computer.

If you do not successfully connect to the host computer it may mean a mistake in typing the ip address. If the host's firewall is configured to block the needed port, then your connection will also be blocked. The port for the VNC protocol must be opened on the host computer. It may work out for the best if the technician does the initial setup of both computers, after which the host user just needs to click the appropriate sharing option when making the help call.

You can bookmark a connection on the Krdc "guest" to save time with repeat tech help calls. You'll need to enter the new password for each desktop sharing session. But for connections on your LAN or to a remote computer say at a university, your account and password probably won't be changing and you can leave it saved in Kwallet.

@@ Line 20: / Line 20: @@
 <!--T:5-->
-'''Krdc''' is one of a pair of KDE programs - [[Special:myLanguage/Krfb|Krfb]] is the other - that let you share your desktop through the local network with another user, probably somebody like the tech downstairs who you want to help you. Sharing your desktop can let her help you figure out something you are having trouble with. You can call the tech on the phone and be talking with her while she assists you. The tech can even "drive" your computer if you decide to let that happen.
+'''Krdc''' is one of a pair of KDE programs - [[Special:myLanguage/Krfb|Krfb]] is the other. '''Krdc''' lets you log onto another computer remotely; either over a LAN or over the internet.  '''Krfb''' lets you share your desktop through the local network with another user, probably somebody like the tech downstairs who you want to help you. Sharing your desktop can let her help you figure out something you are having trouble with. You can call the tech on the phone and be talking with her while she assists you. The tech can even "drive" your computer if you decide to let that happen.
 <!--T:6-->
-'''Krdc''' is a client program. It must be matched by a server or "host" program that is running on another computer. In this explanation, we will use the terms "guest" and "host":
+'''Krdc''' is a client program. It must be matched by a server or "host" program (e.g., '''Krfb''') that is running on another computer. In this explanation, we will use the terms "guest" and "host":
 <!--T:7-->
@@ Line 30: / Line 30: @@
 <!--T:8-->
-You will also need to refer to the [[Special:myLanguage/Krfb|Krfb]] page to make complete sense of the '''Krfb'''/'''Krdc''' process.
+You can refer to the [[Special:myLanguage/Krfb|Krfb]] page to learn more about  the '''Krfb'''/'''Krdc''' process.
 <!--T:9-->
@@ Line 44: / Line 44: @@
 <!--T:13-->
-You will note that you, as a guest technician, can provide assistance to many different operating systems because the VNC protocol is widely used for desktop sharing. You are not limited to working with remote host KDE desktops.
+You will note that you, as a guest technician, can provide assistance to many different operating systems because the VNC protocol is widely used for desktop sharing. You are not limited to working with remote host KDE desktops; you can login to Windows and other systems as well.
 <!--T:14-->
 :*Start '''Krdc''' (<menuchoice>Kickoff button -> Applications -> Internet -> Krdc</menuchoice>)
-:*Type in the address of the host computer (VNC protocol) (Please use the address sent from the host. These are just examples.)
+:*Type in the name or ''ip address'' of the host computer (this is a VNC protocol) (You'll need to obtain the ''ip address'' of the host from the host. Here are some examples:)
 :**Krfb(KDE3)--192.168.1.102:0 (identify the screen number after the colon)
 :**Krbf(KDE4)--192.168.1.102:5900 (identify the port after the colon)
 :**Gnome ('''TigerVNC''')--192.168.1.102 (the port number is assumed)
-:*Type the password that the host requires
+:*Type in your user name and then the login password that the host requires. This will be saved in Kwallet by default which means you don't need to login every time you connect.  If you are a technician servicing a host computer, you may need a new password every time you login.
-:*Adjust the screen to better fit (<menuchoice>Session -> Scale remote screen</menuchoice>...)
-:*When your mouse is within the window limits from the host, you can control the remote computer if that ability was set at the host (recommended).
-:*The guest screen (running '''Krdc''') will show the pointer of the host if you select <menuchoice>Session -> Show local cursor</menuchoice>, otherwise, the only evidence of the position of the host mouse pointer (as shown on the guest screen) is the hover effects.
-<!--T:15-->
+:*When your mouse is within the window limits of the host's desktop, you can control the host computer.
-{|class="tablecenter"
-[[Image:Krdcpointer.png|24px|]]||Remote host pointer on guest screen
-|}
-<!--T:16-->
-[[File:Krdclinked.png|300px|thumb|center|'''Krdc''' first view of the host after connection.(KDE3 host)]]
-<!--T:17-->
-You can see the scroll bars around the screen image of the remote host. This may be the point where you adjust the scale (<menuchoice>Session -> Scale remote screen</menuchoice>...)
 <!--T:18-->
-If you do not successfully connect to the host computer it may mean a mistake in typing the address, but if the host is running a firewall, that will block your connection with only a "Server not found" message. The port for the VNC protocol must be opened on the host computer. It may work out for the best if the technician does the initial setup of both computers, after which the host user just needs to click the appropriate sharing option when making the help call.
+If you do not successfully connect to the host computer it may mean a mistake in typing the ''ip address.'' If the host's firewall is configured to block the needed port, then your connection will also be blocked. The port for the VNC protocol must be opened on the host computer. It may work out for the best if the technician does the initial setup of both computers, after which the host user just needs to click the appropriate sharing option when making the help call.
 <!--T:19-->
-You can bookmark a connection on the '''Krdc''' "guest" to save time with repeat tech help calls. You'll need to enter the new password for each desktop sharing session.
+You can bookmark a connection on the '''Krdc''' "guest" to save time with repeat tech help calls. You'll need to enter the new password for each desktop sharing session. But for connections on your LAN or to a remote computer say at a university, your account and password probably won't be changing and you can leave it saved in Kwallet.
-<!--T:20-->
-You will not want to use '''KWallet''' password manager with '''Krdc''' since the password for each desktop sharing session is unique.
-<!--T:21-->
-'''Krdc''' isn't the typical way to administer a dedicated server because it is recommended that servers run without a GUI desktop. Server administrators are urged to use command line and the secure SSH protocol.
-<!--T:22-->
-:[http://en.wikipedia.org/wiki/Secure_Shell Wikipedia SSH Article]
-<!--T:23-->
-:[http://www.openssh.com/ openssh]: /GNULinux secure shell
-<!--T:24-->
-If you have a local area network with onsite tech support, your tech may want to consider using [https://help.ubuntu.com/community/HowToZeroconf '''zeroconfig'''/'''avahi'''] to make host machines easier to identify (using machine names instead of IP numbers).
 <!--T:25-->
 [[Category:Internet]]
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