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  1. #1
    Roark
    Guest
    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.




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




  2. #2
    decaturtxcowboy
    Guest

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

    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.




  3. #3
    Notan
    Guest

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

    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



  4. #4
    Roark
    Guest

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


    Paul Miner wrote:
    > On Tue, 19 Dec 2006 22:04:57 GMT, decaturtxcowboy
    > <[email protected]> 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?




  5. #5
    decaturtxcowboy
    Guest

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

    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.






  6. #6
    P.Schuman
    Guest

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


    "Roark" <[email protected]> wrote in message
    news:[email protected]
    > 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.





  7. #7
    P.Schuman
    Guest

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

    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.






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