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Ultravnc port mapping

ultravnc port mapping

We recommend to use UltraVNC to connect to the server. The standard port number is , although it may change depending on your server. In the example below, we are mapping display port:1 to user linuxize. RealVNC, UltraVNC, Vinagre, and VNC Viewer for Google Chrome. the latest UltraVNC for Windows and Linux VNC servers • Support for sound/music redirection from MacOS and easy setup without port-forwarding / dynamic. BUILDING WORKBENCH FOR GARAGE Ultravnc port mapping filezilla webspace cant upload file

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Allow Loopback Connections Sometimes this could be helpful for tests. Normally it's not needed since the result is not very useful. Loopback Only Needed for tests. Connections from outside are not allowed. When last client disconnects In a helpdesk scenario, you normally "Do Nothing" when disconnecting.

When administering servers via remote control, you might wish to either "Lock Workstation" or "Logoff Workstation" for security reasons. Query on incoming connection If enabled, every time someone tries to connect via UltraVNC, a pop-up dialog informs the user and asks the user to either accept or refuse the attempt. Configure the timeout for the dialog window and what action should be taken if the user clicked no button until timeout. This can be configured by "Disable Viewer inputs" or "Disable Local inputs".

Multi viewer connections Here you can configure the behavior if multiple viewers attempt to connect to the same UltraVNC Server. Authentication "VNC Password" is a per-machine password and is required. Requires computer and user to be in the same domain. Allows for cross-domain authentication, i.

For MS-Logon I there is a dialog allowing to configure 3 groups:. Currently there are several encryption plugins available. TeamViewer works in a similar client-initiated collaborative connection by letting the client give the outsider an ID for a session request they just established although TeamViewer can be setup with a permanent ID to allow inbound connects in much the same way as VNC works but without the hassles of the outsider knowing the IP address [of the client's router] and using port forwarding through the router and firewalls.

Hard to tell just what this service provider did with their product when combined with UVNC. You sure this is an enterprise-level product that is meant to support multiple internal hosts on the inside of a NAT router? Basically you manage the host to provide the same session handling of these 3rd party session providers. So it depends whether or not this company that uses this product that incorporate UVNC really wants to add the resources to support this interfacing host, especially since it is outside the router and probably past their firewall so it will have to be a hardened and well-managed externally-facing host.

You still run into the problem of letting the outsider know where to find this host. It is possible this host can get a static IP address but users still don't like using IP addresses. The repeater is doable but more work than using LogMeIn or other similar providers but you do get to control its security or screw it up.

Since the company didn't think through how it was going to get remote service support by using a product that uses UVNC, I'm not sure they'll bother with having to manage an extranet host that demands even more security than they now have to commit resources in managing their router and its firewall. This wasn't my solution, it came pre-setup and the software vendor normally provides a NAT router to protect the server and computers.

I was told by them that it only needs outbound port 80 to work, then I was told that it needs outbound port , then I was told that they don't know what it needs Being a firewall guy myself I would have expected that the workstation would reach-out and touch the software provider and that a two way connection, much like surfing or ftp, would be setup, but there is no connection showing in the firewall monitor.

That's how the software vendor stated the UltraVNC connection service is suppose to work, they provide a server WAN connection for all of their customers, the customers pick a support rep, and they connect, but I can't see it attempting the connection in the firewall.

Okay, I was thinking the connection was initiated from the outside, not by the internal client host that connected out. The client that wants support uses his VNC Viewer to connect out on port 80 to the service provider's VNC server that is listening on port This is needed for a persistent session so the server can continue accepting connect requests back on its listening port from other clients.

Since the clients are connecting to the service provider's VNC server using the VNC Viewer app on their host, at some point they're going to have to switch from client to server so the other end can control their host. That's when port comes in because that's the default listening port for a VNC server.

But it is this switch where the client relinquishes control to the other end that makes me wonder if there isn't a problem with the IP address. For 50 internal hosts, there would be 50 port forwards or a range of them to tell the router which host is associated with which router's WAN-side port so the other end gets to the correct host. Just WHO initiates the support session?

The outsider or the insider? If the outsider, the repeater setup mentioned by SB is probably how you will have to go. If the insider initiates the connection, aren't they using the VNC Viewer app? The VNC Server listens. I never switched its role to change me from client to server but I figure if that's how it is being done there then the problem is with port forwarding through the router and where the repeater might come in.

For some 50 VNC Viewer client hosts to be connecting to the service provider's VNC server means it has to listen on different ports or handshake to a different socket for each client connect. Well, the handshaking to an ethereal port means you won't know which one as the client you will get. If the service provider's VNC servers listened on different ports, each client would have to know which port that particular host was supposed to use.

Is there really a mode switch where the client host that is using VNC Viewer changes to server mode to relinquish control to the other end? If the service provider hasn't a clue on how to get their VNC setup to work then maybe the customer should ask this service provider to abandon that setup and use something workable, like TeamViewer. With this product and its use of VNC for remote support, wasn't a support contract included in the sale of this product?

If so, regardless of how the service provider setup VNC, don't they still have to provide support? Seems like the service product is just throwing up the hands pretending stupidity and getting away with it because the customer doesn't enforce the service contract.

That the service provider didn't bother to figure out how to establish that remote support for their customer that the customer is paying for sounds fishy. Using VNC means this was some vertical market or custom product. You sure the vendor of this package actually provides support? It might've been contracted to include the VNC feature in the product but there really was no support contract for after the purchase and the vendor is just doing it for good faith or image reasons as long as not too much expense is involved.

The vendor states that this is their standard support method, but I can't see it working though a firewall without additional direct port mapping. Maybe you could afford to use TeamViewer. If you're supporting more than 10 people you should be able to. Don't try it on the cheep you never get respect, if they pay for it they value it. But including remote access support using VNC doesn't really preclude the customer from implementing a different remote access scheme.

The software vendor doesn't even have to install any software there is a standalone executable for TeamViewer that doesn't require installation. Someone the customer isn't pushing very hard to get the support they paid for. To be honest, if you need to tunnel though firewalls it'll be horrible using individual connections like VNC going to someone outside your private network, even more so on DHCP you can't even know the IP address to match up.

Either that or get the vendor added to you network through a VPN tunnel. Sorry to the OP, I didn't pick up that you were not the vendor until later posts. These things are tough, and as I get older I am more inclined to be tougher on the vendors.

They need to supply support, they will do it my way. If it costs an extra k or two then so be it. If I can do it, then they can do it. You're in the driving seat here, you tell them what you want seeing as you're paying the bills or your client is. For this kind of support a brokered connection is needed, and one that'll tunnel through firewalls with little work on your part. We deserve it. You may try establishing a remote connection using a R-HUB remote support server.

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