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VNC Help

L

Lugztaz

[H]ard|Gawd
Joined
Jun 21, 2004
Messages
1,783
Daves.jpg


This is my friends network and i need a lil help

I want VNC on 192.168.0.1 wich is attached to the netgear router wich is then again attached to the modem/gateway/router. What settings do i need to change in the Netgear to port foward 5900 to that computer? Since 2 computers get a 192.168.0.? and the other one gets 192.168.254.? how do i do this? Dose this make since?
 
You said you wanted VNC on 192.168.0.1 but since this is just a router, I assume you meant you want to run VNC server on one or more of the hostsbehind 192.168.0.1, such as the Compaq or HP.

If you want to have VNC servers running on multiple machines behind your netgear, then you will need to use different port numbers for each, i.e. 5900, 5901... etc, since each port can only be forwared to one host. You will need to configure VNC to listen on different ports. Then you will need to forward these ports on your netgear router to the respective IP addresses (this procedure should be documented fully in the netgear user's manual).

Unless you meant you wanted to run the server on 192.168.254.1 in which case no additional configuration is necessary.
 
no, see if i foward port 5900 to 192.168.0.2 then the gateway is gona think, where is that? it has no idea that that exists because it dosent give the router an ip address. get it? is there some setting in the first router/gateway that i need to set that tells it that that router is there and somehow makes it a switch and not a router? or can i just foward port 5900 to the router then foward it to the computer?
 
If you don't want the second machine to route then don't use it as a router. If you only want switch functionality then only use the switched LAN ports. I am confused at where your confused here. Don't use the WAN port on the second device. If you want to segment the second LAN on the router then that box will need to support a routing protocol. Typically these NAT routers support RIP and/or RIP2.
 
Deadlierchair said:
The Speedstream 5200 is just the DSL Modem correct? Or does it have a built in router?
Click to expand...


The Speedstream is only acting as a modem yes.

If you don't want the second machine to route then don't use it as a router. If you only want switch functionality then only use the switched LAN ports. I am confused at where your confused here. Don't use the WAN port on the second device. If you want to segment the second LAN on the router then that box will need to support a routing protocol. Typically these NAT routers support RIP and/or RIP2.
Click to expand...

ok will try
 
Can you rehost the image, it isnt working for me anymore, so I can't even take a crack at it.
 
Ack, it went away again already :( Maybe host it on one of those free pic hosting websites for now?
 
Darkstar850 said:
Ack, it went away again already :( Maybe host it on one of those free pic hosting websites for now?
Click to expand...

i got to get this hotlink thing under control :D
 
Ok, just to clarify, is 192.168.0.1 the netgear router, or a box attached to the router?
If I understand this correctly, you want to VNC from an external source to 192.168.0.1 (which is a server or pc), is that correct?
 
Darkstar850 said:
Ok, just to clarify, is 192.168.0.1 the netgear router, or a box attached to the router?
If I understand this correctly, you want to VNC from an external source to 192.168.0.1 (which is a server or pc), is that correct?
Click to expand...

that is correct, .0.1 is the router
 
It looks like you have a double-NAT situation. What that means is that in order to get to CompaqPOS and HPos you are going to have to port forward through both your SpeedStream and Netgear. Here are some instructions, but they presume you know how to use your management interfaces as I dont know yours by heart.

First of all, on CompaqPOS leave your VNC listening port at 5900, on HPos change it to 5901. Now you will need to go into your Netgear and set the port 5900 to forward to 192.168.0.2 and forward 5901 to 192.168.0.3. While you are in here you will need to look at the status page and find out what your IP is on the WAN port. I am guessing it is 192.168.254.2. Now you are going to have to get into your SpeedStream management console and port forward 5900 and 5901 to 192.168.254.2 or whatever the WAN address was on your NetGear. If you want VNC on Box5 just set it to port 5903 and then in the SpeedStream port forward 5903 to 192.168.254.1.

The important part that is missing on your diagram is the WAN address on the netgear. I tell you what I would do in your situation, assuming the netgear is a 4-port. I would put the SpeedStream into bridge mode and do your PPPoE on your Netgear, then hook everything into the Netgear. Would simplify the setup a lot and eliminate the double-NAT situation.

Brian Taylor
 
BrianTaylor said:
It looks like you have a double-NAT situation. What that means is that in order to get to CompaqPOS and HPos you are going to have to port forward through both your SpeedStream and Netgear. Here are some instructions, but they presume you know how to use your management interfaces as I dont know yours by heart.

First of all, on CompaqPOS leave your VNC listening port at 5900, on HPos change it to 5901. Now you will need to go into your Netgear and set the port 5900 to forward to 192.168.0.2 and forward 5901 to 192.168.0.3. While you are in here you will need to look at the status page and find out what your IP is on the WAN port. I am guessing it is 192.168.254.2. Now you are going to have to get into your SpeedStream management console and port forward 5900 and 5901 to 192.168.254.2 or whatever the WAN address was on your NetGear. If you want VNC on Box5 just set it to port 5903 and then in the SpeedStream port forward 5903 to 192.168.254.1.

The important part that is missing on your diagram is the WAN address on the netgear. I tell you what I would do in your situation, assuming the netgear is a 4-port. I would put the SpeedStream into bridge mode and do your PPPoE on your Netgear, then hook everything into the Netgear. Would simplify the setup a lot and eliminate the double-NAT situation.

Brian Taylor
Click to expand...


Well see, the Speed stream is NOT giving the Netgear a IP. It uses 192.168.0.1 wich i DID display on the diagram. What i am thinking is chaning the WAN on the Netgear so it's in the range of the Speedsteam, would that work? or will it still work the way you explained?

Also the reason im not using the netgear for everything is because i don't want to have to run 3 cables down stairs for 2 comps and an Xbox....
 
I am still a little confused. What are you attempting to VNC to? HPos, CompaqPOS, or something else? You made it sound like you want to VNC to the netgear router, which I don't think is accurate. I have a double NAT setup which works fine, so if you can clarify what your source and destination for the VNC session is, I think I can help.
 
Darkstar850 said:
I am still a little confused. What are you attempting to VNC to? HPos, CompaqPOS, or something else? You made it sound like you want to VNC to the netgear router, which I don't think is accurate. I have a double NAT setup which works fine, so if you can clarify what your source and destination for the VNC session is, I think I can help.
Click to expand...


no i do want it on CompaqPOS
 
Unless you are just using the Netgear as a switch, it will have 2 IP's, LAN and WAN. Because everything "behind" the Netgear has 192.168.0.x addresses I am guessing that you are using it as a router. You really need to go to the Netgear status screen and find out what the WAN IP address is.

Talking about that above, I also introduced another possible solution. Turn off DHCP on your Netgear and plug the cable from the SpeedStream into one of the LAN ports. If it doesn't bring up a link light you will have to change it to a crossover cable (I am not sure if that particular device does auto-MDIX). You will then just be using the Netgear as a simple switch and all devices will start using 192.168.254.x addresses coming from your Speedstream. Then all you have to do is set up the port mappings in the Speedstream making sure to set all the machines VNC on a different port.

Brian Taylor
 
BrianTaylor said:
Unless you are just using the Netgear as a switch, it will have 2 IP's, LAN and WAN. Because everything "behind" the Netgear has 192.168.0.x addresses I am guessing that you are using it as a router. You really need to go to the Netgear status screen and find out what the WAN IP address is.

Talking about that above, I also introduced another possible solution. Turn off DHCP on your Netgear and plug the cable from the SpeedStream into one of the LAN ports. If it doesn't bring up a link light you will have to change it to a crossover cable (I am not sure if that particular device does auto-MDIX). You will then just be using the Netgear as a simple switch and all devices will start using 192.168.254.x addresses coming from your Speedstream. Then all you have to do is set up the port mappings in the Speedstream making sure to set all the machines VNC on a different port.

Brian Taylor
Click to expand...

Crap, i turned off DCHP last night but i forgot to move from WAN to LAN
 
Not sure if that last comment means youve got it working now, but just in case, here is how to do the double NAT.

Set the IPs up like so (this is assuming a /24 or 255.255.255.0 mask)

WAN IP SpeedStream: Whatever the ISP gives you
LAN IP SpeedStream: 192.168.254.254

"WAN" IP Netgear: 192.168.254.253
LAN IP Netgear: 192.168.0.1

On the SpeedStream, Port forward whatever port you want to use, say 5900, to 192.168.254.253. Then, on the Netgear, port forward port 5900 to 192.168.0.2 (CompaqPOS).

If you want to have VNC to other machines, repeat using other ports, and change the listening port on the VNC server on the other machines.
 
Darkstar850 said:
Not sure if that last comment means youve got it working now, but just in case, here is how to do the double NAT.

Set the IPs up like so (this is assuming a /24 or 255.255.255.0 mask)

WAN IP SpeedStream: Whatever the ISP gives you
LAN IP SpeedStream: 192.168.254.254

"WAN" IP Netgear: 192.168.254.253
LAN IP Netgear: 192.168.0.1

On the SpeedStream, Port forward whatever port you want to use, say 5900, to 192.168.254.253. Then, on the Netgear, port forward port 5900 to 192.168.0.2 (CompaqPOS).

If you want to have VNC to other machines, repeat using other ports, and change the listening port on the VNC server on the other machines.
Click to expand...


THis is on a friends setupm, and no i havent got it fixed because when i tried last night i forgot to move the cable but yes that's exactly how im thinking of it being setup :) will let ya know!
 
But if you have moved the cable from the SpeedStream from the WAN side to the LAN side of the Netgear you have eliminated the double-NAT and now all you have do is port forward in the SpeedStream to the machines.

When you do this there is no reason to port forward on the Netgear.

Brian Taylor
 
That is correct. I just provided another possible solution retaining the double NAT. In Lugztaz's situation, I would probably just bypass the WAN of the netgear. In my setup, however, that was not an option.
 
OK i tried everything the way we all said! NOTHING,,i say to my friend, i think i might have to make it a crossover cable, he thinks it already is because it was an XBOX cable.it was 1am so i couldn't go walk arround his house with his parents sleeping to check, but in my(our) modem,,,SAME ISP i foudn this

NAT.jpg
 
Why don't you update your graphic from your original post to show your current configuration, after the changes you made. It is a very good diagram and helps people to visualize your setup. Please also try to distinguish which physical ports are being used on the netgear router (WAN vs LAN) and also include both WAN and LAN IP addresses on that router.

I think that would help us understand what changes have been made and help to show where the problem might lie.
 
Haven't looked at this thread in a while. Is the netgear router just acting as a switch now, or is it a DHCP server and NATing the IPs?

EDIT: Pic wasn't showing up for me before, looks like its in router mode again. In that case the config I posted before with the double NAT should work.
 
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