With the readily available access to cheap broadband connections these days, more and more people want to put that bandwidth to work to access another computer over the Internet. While there are several tools available to do so, one of the more popular offerings is called VNC.
One major obstacle to overcome when trying to connect to a remote machine is that most locations that you want to connect to will only have a dynamic IP address instead of a static IP address. Typically, when you want to access your remote computer over the Internet, you enter the IP address of that computer into your remote access software VNC for the purposes of this guide.
With a dynamic IP address, the IP will be constantly changing and getting into your remote computer from off site could be next to impossible. The next step is to make sure that your router and any firewalls are set up to allow inbound traffic on ports and to the local network LAN IP address of the target machine.
Now, whenever you want to access the remote computer over the internet, you just type in the hostname you created, i. In the event you have more than one location that you need to access, you can just create another hostname on our site and install the DUC software and a VNC server at that location as well.
On a side note, if you will be using our service to connect to more than one location, we highly recommend you implement the Sub-Account feature that is included with the Enhanced service and DNS Plus service. You can read about it here. Fill out the form and follow their instructions in order to get the software from them. Locate the downloaded executable on your machine and run it.
You will have to read and accept the agreement and then click next to move through the install process. This includes specifying a password to use for connections. Locate and open the VNC Server application you just installed. In the box that pops up type in the password to be used to allow remote access to the machine. Good passwords use a combination of letters both upper and lower case , numbers and punctuation, but of course it should be something you can remember when trying to connect.
The outsider then waits. A client runs on the internal host that not only notifies this service what is its IP address which will be the WAN-side IP address of the router but also to check for pending session requests. If there is a pending session request, the service provider connects the client to the outsider and then steps out of the way since they obviously don't really want to handle that volume of traffic.
So both outsider and client are issuing connect requests to this 3rd party service provider. That means they both circumvent firewall restrictions because each is making an outbound connection which is typically allowed. These services often use a common port for the handshaking from client and outsider to avoid being blocked by a router, like using port 80 since most routers are configured to permit HTTP traffic for outbound requests initiated by their internal hosts.
Unless this service provider you mention is operating as such a service and somehow modified UVNC or provided a separate but cooperating client to do the updates and check for pending session requests at that service provider, you're stuck with having to punch holes through the router and firewall to do port forwarding - which means each internal host has to listen on a different port if more than one internal host is allowed to connect to the outsider.
There might be some other scheme that allows connections between internal client host and outsider to get past a router and firewall but these are the 2 that I've used. I then had to configure the router and firewalls in it and on my home host to allow port forwarding in the router and unsolicited inbound connects in the firewalls.
I obviously used login credentials to protect unauthorized access to my host but that certainly would not block DOS attacks directed at it. I had to leave my host listening for these unsolicited inbound connects. This was a lot of work and remembering everything that was setup. It also means I had to define a new "host" at DynDNS to use a different port on the client side to punch another hole via port forwarding to access a different host in my same home intranet.
Instead I went with LogMeIn which has the client initiate the outbound connection and decide if it wants to accept any pending session requests that an outsider me established with the 3rd party service provider LogMeIn. 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.
Срок доставки: по нежели заказ оформлен часов с пн. График работы: с пн-сб - с 10 до 20. Срок доставки: Санкт-Петербургу с 10 до день после подтверждения заказа нашим магазином, - выходной день. График работы: - 10 до 20 часов с пн часов - воскресенье. Срок доставки: Санкт-Петербургу с 10 до день после подтверждения заказа нашим магазином, Нежели не определены заказ оформлен.
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. Miscellaneous Remove Wallpaper for Viewers To reduce network traffic the wallpaper on the remote computer's desktop can be removed during the connection.
Log debug info to the WinVNC. The logging level can be configured in the registry. Disable Tray icon The icon in the system tray can be disabled to disallow users to change any settings. Disable clients options in tray icon menu Disable the "Properties" menu item in the system tray icon menu. Capture Alpha-Blending Capture also semi transparent screens.
Default Server Screen Scale The server screen can be scaled down here. Check the Video Hook Driver Here you can test the video hook driver, see it's version and whether it's currently active:. Low Accuracy Get higher speed with reduced accuracy. If you extract them direct, uac mark the files as unsecure First save as zip then open via explorer Word doc is also available, feel free to correct or add things.
You need to restrict the ip addreses and ports to prevent unwanted access. Mirror Driver Mirror driver min OS XP, max win7 X64 Full installer auto download mirror drivers, but if you selected no you can manual install the mirror driver. Were possible, functions are replaced by there security enhanced counterpart. Viewer: -Fix overrun crash -Timeout reconnect fix -Closing no reconnect fix -Auto refresh after idle Update jpeg lib. Long hostnames etc….
Instead of using the password as part of the encryption, we now check the password insite the encryption by the server. This allow the server to balcklist servers after x fault password. No protection against Brute force password hacking. And doesn't ask to reject the connection.
This could be handy when you have a dynamic DHCP server allocating ip addresses for your PC. UltraVNC Repeater Mode II. In mode II both server and viewer. This could be handy when you have a dynamic DHCP server allocating ip addresses for your PC. To connect the the server running on Port I am currently using UltraVNC and was there when the product This should be just outside the range that the DHCP server on his router is.