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Cannot connect to my public IP from same netowrk.

  • 14-09-2015 11:13am
    #1
    nava
    Registered Users, Registered Users 2 Posts: 4,739 ✭✭✭


    Hi

    I cannot connect to my IP camera, VNC, etc while in the same network using my public IP address (80.111.x.x) but I can connect using the internal IP address.

    I have configured port forwarding with the relevant ports to the relevant device.

    I can connect to those devices from the internet using the public IP address (80.111.x.x) with the relevant port for the device and works ok.

    Does anyone have any ideas how to fix it so I can connect using the public IP address when connected in the same network, also try using service like no-ip.com, etc but the same result.

    Using UPC modem Ubee EVW3226EU, some of the setting I changed are below, I marked Y if they are enabled as default on the modem.

    Options:
    WAN Blocking
    IPSec pass through Y
    PPTP pass through Y
    Multicast Y
    UPnP Y

    Firewall:
    Port Scan Detection
    IP Flood Detection
    IPv4 Firewall Protection Y
    IPv6 Firewall Protection Y

    I asked UPC but they said it is not something they can support.

    Thanks in advance.


Comments

  • #2
    ED E
    Registered Users, Registered Users 2 Posts: 36,170 ✭✭✭✭ED E


    You need loopback NAT. The Ubee wont have that option. You'll need to buy a better router and bridge to achieve this.

    Alternatively if machine X is always within the lan, you could add yoursite.no-ip.org to the hosts file and override regular DNS.


  • #3
    nava
    Registered Users, Registered Users 2 Posts: 4,739 ✭✭✭nava


    ED E wrote: »
    You need loopback NAT. The Ubee wont have that option. You'll need to buy a better router and bridge to achieve this.

    Alternatively if machine X is always within the lan, you could add yoursite.no-ip.org to the hosts file and override regular DNS.

    Thanks, I had the TC7200 and was able to do it so I thought was just some setting on the Ubee modem that I didn't know, but looks like it is just no available now.


  • #4
    mass_debater
    Closed Accounts Posts: 3,072 ✭✭✭mass_debater


    nava wrote: »
    Thanks, I had the TC7200 and was able to do it so I thought was just some setting on the Ubee modem that I didn't know, but looks like it is just no available now.

    Some routers with weak firewall allow this hairpin NAT, a proper secure firewall will not allow it unless you specifically allow NATing from the lan subnet


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