static ip addressing question

December 13, 2010 at 13:31:47
Specs: Macintosh , 2.4 2g
got static ip to allow my HVAC company to monitor the equipment. how do i address to their controller? The line is not single use and goes into a wireless router hence the addressing issue.
staticip/192.168.1.xxx/port#? Ot through a vpn?

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#1
December 13, 2010 at 13:52:23
Usually HVAC units use a dialup connection not a internet connection.

Who assigned this "static ip" to the HVAC system?

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#2
December 13, 2010 at 14:27:57
thanks. they uses a static ip and if the put the static ip into their controller they can reach it with no router installed. my issue is that i have a wireless router, so I need to get them on the other side while continuing to use the signal for my home internet connect also. i understand assigning a 192.168.1.xxxx number to it and a port or ports. But I don't fully understand how to do it. for example staticip/192.168.1.xxx/xxx, but i know that's not correct. they mentioned using a vpn. would that make sense i think they want control as well as monitoing. hope i'm explaining well enough.

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#3
December 13, 2010 at 14:40:34
The hvac folks aren't explaining themselves very well.

They are talking about a public ip which when assigned would allow them access without going thru a router [kind of].

A vpn would be to your network and you don't want that.

From what you describe you will need to assign the hvac system a ip address in your lan's ip range. That is step1
Step 2 is you then have to modify your dhcp scope in the router to exclude this ip addess so there isn't a ip conflict.
Step 3 is to forward, whatever port or ports the hvac system is using, to that assigned ip address.

They would access the hvac system by putting in the ip address of your wan port of your router.

The real trick now is most people have dhcp for wan ip which means it changes periodically. They will have to call you and have you go to somewhere like ipchicken.com so you can tell them what the current wan ip address is.

Sounds complicated doesn't it? That is why most just make you put in a phone line and connect to the hvac system that way.

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#4
December 13, 2010 at 16:50:54
ah, ok. i pretty much get that. i now have a static (non changing) ip. and then for them to get in, the address they would use would be mystaticip/assignedport# and the ip for their controller (192.168.1.xxx) isn't nec in the address? they would put the LAN address and port in their control. Sorry about asking the same thing different ways. apprecaite your patience.

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