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

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.
Thanks in advance for your help.

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.

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

Paul Miner wrote:
> On Tue, 19 Dec 2006 22:04:57 GMT, decaturtxcowboy
> <nope_none_@nowayspam.com> wrote:
>
> >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.
>
> 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.
>
> --
> Paul Miner

I'm lost. Are you saying I can setup a web server? And then people can
ping my connection?

Paul Miner wrote:
> On Tue, 19 Dec 2006 22:04:57 GMT, decaturtxcowboy
>> 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.

> 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.

"Roark" <petergrillo@sbcglobal.net> wrote in message
news:1166564136.867065.297840@73g2000cwn.googlegro ups.com...
> 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.
> Thanks in advance for your help.
>
just curious - exactly what do you select at - www.whatsmyip.com
as it appears to be a portal site.

you have to remember that each and every packet
usually has a destination "port" which usually equates to a common "service".
Ping is just another "service" that can be blocked by any internal router.
Very much like SMTP email ports blocked by some ISP's, to thwart spam.
So - you just have to find another "service" on your system to access
from the outside world.