Please input available ip address!

[Davidov007]

Hi. I want to port forward 2 routers ,GPON Home Gateway is the one I have a problem with, in the field "LAN IP" I dont know what to type, but whatever I type in it gives me error " Please input available ip address!"
Any help would be great,thanks in advance.
Full map : My PC - Router - Router/modem -Friend's PC - Internet.

 

[Alabalcho]

From your "map" - portbforwarding is done at the router exposed to Internet. In your case, this somehow is your friend's PC.

So, the question is - why you need so many routers?
On your question - you enter the local IP address of the device where the packets coming foreMAN interfaces should be forwarded to.

 

[Davidov007]

Alabalcho,
I'm really sorry but I am kind of a dummy in internet-related stuff, I don't kno what this part means : "you enter the local IP address of the device where the packets coming foreMAN interfaces should be forwarded to", I would answer your question like this, because reasons like cables. The second router is at my friends' house.

 

[Alabalcho]

I'll try to explain standard port-forwarding:
- you have a router, with LAN address space set to 192.168.0.0 thru .255. Your ISP has assigned WAN address of 100.200.100.200 to that router;
- you have a web server on your PC, connected to that router, with IP address of 192.168.0.10;
- you want your friend to access your web server, and you give him following URL: http://100.200.100.200:8080 (your WAN address, with special port)

You have to make following setting on your router:
- incomping port number: 8080
- LAN address: 192.168.0.10 (your PC)
- LAN port number: 80 (whwre your web server is listening to)

I don't know how you will apply this in your complex network where you get Internet from your friend (who in that case is your ISP)

 

[Davidov007]

I'm trying to port forward my router for a game,the game's port number is 52233, but the page on my router doesn't look like what you told me to fil it with,I have fields :
WAN Port
LAN Port
LAN IP Address
Protocol
Enable Mapping
WAN Connection List
So in conclusion I have to type in LAN ip address of my friend's computer in the field and I have to do this at his PC?

 

[Alabalcho]

No, you type in LAN port IP address of the PC where you'll play the game. You would put 52233 in WAN port, 52233 in LAN port, TCP (probably) in Protocol. I don't know what other entires mean.

But, again - all this is valid if the router you are configuring this is directly connected to the Internet. With your complex (and unknown) connectivity, you are on your own.

Somewhere on your router' status, or configuration, you should have an entry for WAN IP Address. Put first two or three groups of digits here, like 100.200.100.xxx Then, compare this number with what you get from "MyIpAddress.com", or any other site which will report it. If these two addresses do not match - you can't port forward, even if you have the most expensive Cisco router at your disposal.

 

[Davidov007]

I checked the WAN Status and the IP addresses matched, but I still don't have any idea what to type in the LAN IP field,pardon me for my stupidity. But I really need some extremely good explanation. Whenever I type in my IPv4 adress in this field it always tells me " Please input available ip address!" ,but I can enter addresses like 192.168.2.0 ; 192.168.2.2 but not 192.168.2.1,probably because that's the gateway.

 

[Alabalcho]

Your router is next to unknown to Google - "GPON Home Gateway", I was unable to find any technical documentation for it, or its configuration.
For God's sake:
- make a screenshot of this router' configuration page; and LAN settings page (the one which says router' LAN address, DHCP scope etc)
- list LAN IP addresses of the router, and the PC you want to port-forward to;

 

[My Username]

I checked the WAN Status and the IP addresses matched, but I still don't have any idea what to type in the LAN IP field,pardon me for my stupidity. But I really need some extremely good explanation. Whenever I type in my IPv4 adress in this field it always tells me " Please input available ip address!" ,but I can enter addresses like 192.168.2.0 ; 192.168.2.2 but not 192.168.2.1,probably because that's the gateway.

You won't be able to put in "192.168.2.0" anyway because that's your network address (all devices that have the IP address from 192.168.2.1 to 192.168.2.254).

Make sure your IP addresses are on the same subnet mask (designated by a number /1-30)