remote desktop to pc with no gateway?

[syntax]

The 3g connection is linked to my alarm IP card. Why wont the laptop respond to a request(vnc) sent from the 3g router? The router is just another device on the network. The laptop did not initiate the connection the router did.

When you say from the 3g router, are you sure the connection is initiated from teh 3g router?
Or is it a source IP from the internet, THROUGH the 3g router. This is more likely, and covers again what was said earlier.

The internal PC has a default route pointing towards the other router. Your internet connection will be routed this way from the PC, and not to the 3G router.

To make the connection look like its from the 3g router, nat the traffic to the 3g router from the internet to the inside.
Alternatively, route specifc ranges to teh 3g router that you are coming from

 

[syntax]

Yes you can, but 2 things would be important.
1) arrange Unrestricted access on your simcard
2) you need to specify 2 gateways on the pc, and then use Metric value and other IP routing to make your chosen program working.

2 gateways with metrics wont work.
it will just send the traffic to the gateway with the preferred metric. The metric determines which route to use in the presence of 2 routes.

You will need to route more specific ranges to the 3g device or use the nat method i suggest

 

[gfmalan]

2 gateways with metrics wont work.
it will just send the traffic to the gateway with the preferred metric. The metric determines which route to use in the presence of 2 routes.

You will need to route more specific ranges to the 3g device or use the nat method i suggest

Ok, I understand that it on it's own wouldn't help, but the way I understand it is if you have 2 gateway addresses, then you give the one more weight by metric value, or set the priority on one to be always used, but keep the second gateway ready and waiting.

Then with IP/Port routes send the traffic to second gateway.

So the PC send all traffic to 1, except for traffic related to VNC, TV or RDP to gateway 2

 

[TheGuy]

Ok, I understand that it on it's own wouldn't help, but the way I understand it is if you have 2 gateway addresses, then you give the one more weight by metric value, or set the priority on one to be always used, but keep the second gateway ready and waiting.

Then with IP/Port routes send the traffic to second gateway.

So the PC send all traffic to 1, except for traffic related to VNC, TV or RDP to gateway 2

You don't have worry about routing when using a nat rule from outside as long as the 3G router's ip is in the same subnet as the pc's ip.

The reason is the incoming traffic will be translated to an internal ip. This means the pc doesn't need to use its gateway to get back to the ip address.

 

[syntax]

Ok, I understand that it on it's own wouldn't help, but the way I understand it is if you have 2 gateway addresses, then you give the one more weight by metric value, or set the priority on one to be always used, but keep the second gateway ready and waiting.

Then with IP/Port routes send the traffic to second gateway.

So the PC send all traffic to 1, except for traffic related to VNC, TV or RDP to gateway 2

you dont need the second default route for that. It is, in all essence doing nothing and will do nothing until the first default route is removed from the forwarding table. This can be done via an interface going down or route tracking.

you can do static or even protocol routes without needing a second default route. I have never tried policy based routing with protocols on what i assume is a windows machine. I dont suspect it supports it.

The reason i suggest the nat idea, is because it requires no config on the windows box, and will work with any traffic he wants to push through the 3g router. you dont have to route specifc TV ranges etc

 

[gfmalan]

you dont need the second default route for that. It is, in all essence doing nothing and will do nothing until the first default route is removed from the forwarding table. This can be done via an interface going down or route tracking.

you can do static or even protocol routes without needing a second default route. I have never tried policy based routing with protocols on what i assume is a windows machine. I dont suspect it supports it.

The reason i suggest the nat idea, is because it requires no config on the windows box, and will work with any traffic he wants to push through the 3g router. you dont have to route specifc TV ranges etc

Ok cool, the thing that still bother me, Im using Log!eIn and TV, and in both the app on the device setup a route from the device to the server on the internet. When the client want to connect, it follow the route created from inside (i see it as a vpn tunnel that the app create).

So with Natting, all good if you establish the connection inbound like RDP, but the TV session would be created by default gateway, so the inbound connection would also happen over that gateway.

Maybe he should setup a dual WAN router or something, or use VNC/RDP with Natting as you suggest

 

[syntax]

Ok cool, the thing that still bother me, Im using Log!eIn and TV, and in both the app on the device setup a route from the device to the server on the internet. When the client want to connect, it follow the route created from inside (i see it as a vpn tunnel that the app create).

So with Natting, all good if you establish the connection inbound like RDP, but the TV session would be created by default gateway, so the inbound connection would also happen over that gateway.

Maybe he should setup a dual WAN router or something, or use VNC/RDP with Natting as you suggest

Thats a good point. I did some reading on TV but cant find a definitive answer as to how the connections work. It would make sense to me that the TV servers relay the traffic. Which means you would need to route the TV servers specifically out the other router.
This could become a nightmare, since i would assume TV uses content delivery networks for hosting.

in any case, the options are
route TV ranges the other direction (if the servers relay the connection)
use nat and use RDP etc. probably need to use dyndns as well

 

[Hades911]

Teamviewer

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