Real IP addresses available from Tmobile?

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Don Gochenour - 26 Jun 2003 20:31 GMT

Hello All,

I am a new Tmobile customer using a GPRS modem connected to a laptop. I
noticed that the IP address given to the computer is an RFC1918 address-- I
guess they are using NAT.

Does anyone know if you can pay extra for a real IP, either static or
dynamic? If yes, is this IP firewalled in any way, or do you have complete
access to it from the Internet?

Thanks for the help,
Don

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Jon Clark - 26 Jun 2003 23:01 GMT

not AFAIK, but consider what you are paying for access - at $20 to $30 a
month, you couldn't typically get static IP from your regular ISP either. As
far as a "real" IP - that probably comes down to numbers. With 3G data, most
networks are designed to give every device an IP address. Now consider you
are T-mobile and have to give each one of your 12+ million GPRS-capable
devices a unique address. Try getting that kind of address space from your
provider these days. It probably will be a lot more likely to see real IPs
on wireless devices under IPv6, but until then, its all gonna be NAT...

-Jon

> Hello All,
>
[quoted text clipped - 8 lines]
> Thanks for the help,
> Don

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SkyWriter - 27 Jun 2003 03:44 GMT

> Hello All,
>
[quoted text clipped - 5 lines]
> dynamic? If yes, is this IP firewalled in any way, or do you have complete
> access to it from the Internet?

yes, it's firewalled. some types of packets like ICMP are filtered

http://www.theregister.co.uk/content/55/28322.html

> Thanks for the help,
> Don

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