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quick question

  • 24-02-2009 10:32pm
    #1
    guil
    Registered Users, Registered Users 2 Posts: 10,502 ✭✭✭✭


    not sure if this should be here or in midband but does 02, 3 and voda have shared ip addresses and would they be shared in a cell or all over the country,
    like could somone in kerry and donegal end up with the same ip


Comments

  • #2
    Spear
    Moderators, Computer Games Moderators, Technology & Internet Moderators, Help & Feedback Category Moderators Posts: 25,572 CMod ✭✭✭✭Spear


    guil07 wrote: »
    not sure if this should be here or in midband but does 02, 3 and voda have shared ip addresses and would they be shared in a cell or all over the country,
    like could somone in kerry and donegal end up with the same ip

    IP addresses don't work like that, every modem is still assigned a unique IP, but they all appear the same due to the heavy proxy usage on such networks.


  • #3
    guil
    Registered Users, Registered Users 2 Posts: 10,502 ✭✭✭✭guil


    yeah i meant like if a mod here searched for an ip could several users show up with the same ip


  • #4
    Spear
    Moderators, Computer Games Moderators, Technology & Internet Moderators, Help & Feedback Category Moderators Posts: 25,572 CMod ✭✭✭✭Spear


    guil07 wrote: »
    yeah i meant like if a mod here searched for an ip could several users show up with the same ip

    Only a mod can answer that.


  • #5
    FSL
    Registered Users, Registered Users 2 Posts: 1,456 ✭✭✭FSL


    I have my broadband from a wireless provider as the copper where I live will barely support dial up. As far as the outside world is concerned my IP is the same as everyone else on the provider. That is the IP address of his gateway. The same way as if you had multiple computers sharing your BB connection each would have the same IP address as far as the outside world was concerned.


  • #6
    Spear
    Moderators, Computer Games Moderators, Technology & Internet Moderators, Help & Feedback Category Moderators Posts: 25,572 CMod ✭✭✭✭Spear


    FSL wrote: »
    I have my broadband from a wireless provider as the copper where I live will barely support dial up. As far as the outside world is concerned my IP is the same as everyone else on the provider. That is the IP address of his gateway. The same way as if you had multiple computers sharing your BB connection each would have the same IP address as far as the outside world was concerned.

    It almost certainly isn't. One is the use of NAT, the other is the use of a proxy. I'd be very surprised to find an ISP that NAT'd their entire customer base to a single IP like you suggest.


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  • #7
    Marlow
    Registered Users, Registered Users 2 Posts: 14,555 ✭✭✭✭Marlow


    Spear wrote: »
    It almost certainly isn't. One is the use of NAT, the other is the use of a proxy. I'd be very surprised to find an ISP that NAT'd their entire customer base to a single IP like you suggest.

    Matter of fact, there are quite a few, that do, I'm afraid. Three for example has a bunch of IP's that they are nat'ing multiple customers behind and not on a 1:1 scheme, if you believe that. There's a good few small ISPs nat'ing their customers behind one IP, I could mention names, but I won't.

    In general, the best suggestion is, if you end up with an ISP that does things like that, request that they'd assign unique public IP's (be it dynamic or static) or cancel the package.

    /Martin


  • #8
    Spear
    Moderators, Computer Games Moderators, Technology & Internet Moderators, Help & Feedback Category Moderators Posts: 25,572 CMod ✭✭✭✭Spear


    Marlow wrote: »
    Matter of fact, there are quite a few, that do, I'm afraid. Three for example has a bunch of IP's that they are nat'ing multiple customers behind and not on a 1:1 scheme, if you believe that. There's a good few small ISPs nat'ing their customers behind one IP, I could mention names, but I won't.

    In general, the best suggestion is, if you end up with an ISP that does things like that, request that they'd assign unique public IP's (be it dynamic or static) or cancel the package.

    /Martin

    I could see it in very small rural ISP's, but I am genuinely surprised a large-ish lot like Three would try and do that. Got any links or info on how they're doing so?


  • #9
    jor el
    Closed Accounts Posts: 16,713 ✭✭✭✭jor el


    Marlow wrote: »
    There's a good few small ISPs nat'ing their customers behind one IP, I could mention names, but I won't.

    Yep, my sister was with a local wireless operator, had a few hundred customers I believe, and her IP was 192.168.1.12. I was quite surprised, as I'd never seen a local address being assigned over what I would have thought should be a WAN connection. I thought this would have security implications, as in if everyone is on the same local net, then could they see each other's shares?

    With regard Three, Vodafone and O2, I know that Three use a single IP for everyone, and then employ some sort of NAT, though I'm not aware of the details on how exactly this works. O2 assign each user a unique public IP address. I have no first hand experience of Vodafone, but I don't believe they share the IP address.


  • #10
    jor el
    Closed Accounts Posts: 16,713 ✭✭✭✭jor el


    guil07 wrote: »
    yeah i meant like if a mod here searched for an ip could several users show up with the same ip

    Mods can't see the IP addresses, only Smods and Admins have access to that information. If people are using a shared IP, then an IP check would show the link between you and anyone other user on the same IP.

    Shared IPs can result in issues, such as when one user gets IP banned from a particular server, everyone gets banned. Everyone on Three is banned from Xbox Live, I believe.


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