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LAN to WAN without interrupting service

Tags:
  • WAN
  • LAN
  • via
  • Networking
  • Devices
  • Modem
Last response: in Networking
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July 16, 2013 6:26:33 AM

Hello, I am using a set-up of a modem going to multiple devices via LAN with assigned IP addresses. I would like to remotely access the devices (ping the devices remotely) that are connected to the modem without interrupting the LAN communication currently existing. Is there anyway to establish a secondary network that will not affect the current communication with the devices and allow me to ping them remotely via installing a router or some other means?

Thank you,

More about : lan wan interrupting service

July 18, 2013 7:43:39 AM

boosted1g said:
Are you trying to ping devices from a computer outside your network or inside your network?

Outside your network adds several difficulties; you can not just ping a computer/device across the internet.
To be able to do this you would have to use a tool like paping and assign a port to each device on your router to have it port forward to. Then you would paping your WAN IP from your ISP and add the port number that is linked to the desired computer.

Inside your network, performing ping request on a device uses such minimal resources it is not really an issue. Unless you are doing something that has massive local network traffic (not device to internet, but device to device) then you should not see any effect on network performance. It would be like adding a 5lb box to your car and trying to see how much power or gas mileage that is effected. Even doing a constant ping on a couple of computers would not bogg your network down.


I'm trying to ping the devices from outside the network in order to remotely access monitoring devices within the network. So the solution would be to forward ports for each of the devices using a router? If there is currently a modem connection with no router to the devices would putting a router after the modem change current IP addresses and interrupt communication on the LAN?
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July 19, 2013 9:03:30 AM

boosted1g said:
You have to have a router in the mix, you can not just have a modem and then have all the devices on the lan reieving internet without a router. Your modem might be a modem/router combo. If your modem has more then one ethernet port then it has a router built in.

Yes putting all of the devices behind a router would change their IP address to the router. You can configure everything so that the third set of IP numbers is the only difference (for example instead of 192.168.5.110 it would be 192.168.7.110). But as I said earlier, if your LAN devices have internet connection you must have a router somewhere already.

To do a ping you will have to do as i stated in the first post as you can not do a normal ping through the modem, through the router and filter down to the targeted computer.

I know you are trying to be able to ping computers, but what exactly is your end goal, what are you trying to find out/determine with the ping because there is probably a better solution to what you are trying to accomplish here then trying to do a ping over the internet.


My end goal is to remotely monitor metering devices currently on a LAN network from anywhere. The metering devices communicate with each other on the LAN and cannot have any interruption of service. So my goal is to get remote access to them without altering the current LAN communication of the metering devices. They currently get internet from a modem which i'm not sure if it has a router or not. My question is if it is possible to achieve connection with these devices externally by placing something additional into the network without affecting their current communication?
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