Sprint PCS - Re: Ping IP Address of Sprint PCS Cell modem EVDO connection or reverse

Author

Re: Ping IP Address of Sprint PCS Cell modem EVDO connection or reverse

decaturtxcowboy

2006-12-19, 10:33 pm

Roark wrote:
> I have a new Pantech 500 aircard and the connection is fast here in
> Burbank, Almost 1000 Kbs. When I'm connected, however, I need other
> people on the internet to be able to ping my IP address (I do remote
> support using Ultra VNC). When I was with Cingular (slow, dropped the
> data connection constantly), they had a reverse DNS feature so that
> myphonenumber.mycingular.cingular.com would always resolve to my
> dynamic IP address. Sprint seems to have no such thing. That's OK, I
> can use a IP Monster to maintain a dynamic DNS address but I can't even
> ping my IP Address when connected. When I connect, I go to
> www.whatsmyip.com and get my IP Address. Then, I go to www.dslreports
> and run a smoke pipe tool. It returns that my address is un-pingable.

You might have been able to do that with Cingular in the past, but no more.

From my are in north Texas, a ping to my cellphone dies out in Cingular's
Atlanta center. We thought they might be simply blocking a ping request,
but it goes further than that. We tried using UltraVNC with a port number
that instant messenger programs are using (since they work, we know those
ports are passable), but it still didn't work. We suspect there is likely
port sniffing going on to prevent this. This is current information as of
this fall.

I never could get Sprint to work, but that is old information over a year
old. Very likely they were and still are doing the same thing.

Carriers appear to find good money in setting you up with a public IP
address. Several thousand dollars to set you up and several thousand
dollars a month for a large business enterprise.

BTW, just tested my Cingular connection with whatismyip just to make sure
my experience is current. Nope, it can't be pinged, nor can I see a web
server being hosted on my laptop.

Notan

2006-12-19, 10:33 pm

Paul Miner wrote:
>
> <snip>
>
> I just tried setting up an FTP server on my EV-DO connection card and
> it worked pretty well, considering. I didn't bother trying a web
> server to see if the results would be similar.

I might be wrong, but I suspect that Sprint will have something to say
about you running a connection card server.

Notan

decaturtxcowboy

2006-12-20, 10:33 am

Paul Miner wrote:
> On Tue, 19 Dec 2006 22:04:57 GMT, decaturtxcowboy
[color=darkred]
> I just tried setting up an FTP server on my EV-DO connection card and
> it worked pretty well, considering. I didn't bother trying a web
> server to see if the results would be similar.

EV-DO apparently is different than the older connections I suppose. Since I
haven't used Sprint in a year, my information is pretty old as I mentioned.

As was mentioned in another post about ping blacking, sure - they could
block ping activity - just as easy as they could in the future block
FTP and HTTP.

I have no idea what the EV-DO TOS says about running a server, but the old
Sprint TOS prohibited running a server and then eventually prohibited all
tethering to a handest - I seem to recall the TOS changed around May of
'04. If the current TOD fo EV-DO does not prohibit a server, it might just
be a matter of time before it does.

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