#1 Info part one
a) Go to http://ipv4.whatismyv6.com/
b) On that web page is the non bogan/Public/route-able IP Address that users from Internet use to connect to you.
c) Some where in your router, you must have the same non bogan IP Address.
Example non bogan IP Address is 999.888.777.666, but in the router the WAN IP is 10.0.0.100 - this is not ok.
d) Important note: This is not to say that the non bogan IP Address has to be Static.
Example yesterday's IP Address was 999.888.777.666 and today's IP Address is 999.888.777.555 - this is ok.
#2 If you do not see the non bogan IP Address anywhere in the your router it's screens, it first matters what the WAN IP Address in the router is:
a) From 100.64.0.0 - 100.127.255.255, then CGNAT/NAT444/LSN is present
If you want more details about CGNAT/NAT444/LSN, you can look athttp://en.wikipedia.org/wiki/Carrier-grade_NAT
c) The possible fixes to fix your issue if CGNAT/NAT444/LSN is present.
#1 Have them in their NAT router forward the ports to the IP of your router..
#2 Upgrading the type of plan that you are on with your ISP so that you get a non bogan IP Address.
For example if you are a Residential Service Plan, consider going to a Business Service Plan.
#3 Consider switching to another ISP that can give you you a non bogan IP Address.
#4 For the long term future, get IPv6 working.
b) From 10.0.0.0 to 10.255.255.255, from 172.16.0.0 to 172.31.255.255 OR from 192.168.0.0 to 192.168.255.255 - based upon your NAT router:
Step 1: Physically find your NAT Router
Step 2: Find the WAN
port of it.
port could be called Internet
or To Modem
or To ONT
Step 3: Report back what the brand and model of the device that is connected at the other end of the wire that is connected to the WAN
port of the NAT router.
c) If the WAN IP is not the same and is not any of these/those IP Address(es), it would be a good idea to check to see how the non bogan IP Address is not the same (and not NAT). If you need help finding why that is, you are to asking for help doing so.
#3 I move along after this step if the non bogan/Public/route-able IP Address is the same (even if it is not static / "always the same") in the NAT router.