Public IP and WAN IP different
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Had a question, my public IP address is 118.x.x.x and my pfSense wan IP is 100.x.x.x
How come these are different? I thought the wan IP would be the same as the public IP?
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so you wan IP is 100.64.x.x - this is a carrier grade nat IP space.. 100.64.0.0/10
If your behind a cgnat, then yes your pfsense wan IP would be something 100.64.x.x while when you go to the say whats my ip . com you would see the actual public IP your using after your isp nats your 100.64 to real public IP.
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Are there any issues being behind cgnat?
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Normally very difficult to have any unsolicited inbound traffic. Unless your ISP has setup ports to be sent to your 100.64.x.x IP, or allows for you to request them.
Its pretty much the same as your IPs behind your nat router not seeing inbound traffic unless you create a port forward on your router.
If you have no need for inbound traffic - say you running a plex server, or hosting httpd, or whatever then not you prob won't have any problems. But if your wanting to say host some online games or something... Then yeah it can be a problem.
if you would like to say vpn into your home while your on the road with your phone or laptop or something - then yeah problematic for sure.
Do you also have IPv6? If you have IPv6 you could leverage that for the services you want to host off your connection. Problem there is not everyone has IPv6, nor all locations.. Say your on some hotspot at a coffee shop or something and want to vpn to your home - the coffee shop might not have ipv6 for you to use.
edit: upon looking I do see you connecting a few times with IPv6 to the forum.. So I would assume you have it - but that could of been off your phone (not using wifi) or something? For example t-mobile, atleast in my region has gone full ipv6 on their data connections. Your phone never gets an IPv4 address other than via wifi. When you want to talk to an IPv4 address you use a NAT64 gateway they have setup.
