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Thread: Changed IP Address from the provider

  1. #1
    Join Date
    Feb 2014
    Beans
    11

    Question Changed IP Address from the provider

    Hi and good day.

    I currently move to another office and my Internet Provider just notify my that we cannot use the old IP Address anymore. We change the IP Address but I don't know what effect on that on my Server.

    I was using:

    SquirrelMail
    Postfix
    VNC
    SSH

    On the localhost I can still do everything, but on my Mail Server is there any changes? Do I need to update something? I really really don't have ANY IDEA please help me out.

  2. #2
    Join Date
    Feb 2009
    Location
    Dallas, TX
    Beans
    6,660
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Changed IP Address from the provider NEED HELP!

    Hi Duane_Diaz.

    Is this a proper server edition, or a desktop serving as a server?

    Do you receive a modem or router from your ISP?

    How is your server connected to the router or the Internet?

    Could you post the results of these commands on your server?
    Code:
    cat /etc/network/interfaces 
    nm-tool
    Regards.

  3. #3
    Join Date
    Feb 2014
    Beans
    11

    Re: Changed IP Address from the provider NEED HELP!

    Hallo sir papibe

    Yes its Linux Ubuntu Server, when we were using our old IP address there are no problems. Now the problem is we cannot receive e-mails. But we can send emails.

    Yes we have a router from the ISP I can set it up on 192.168.1.1

    It wired sir, it was set up by the provider. They did the wiring.

    for nm-tool:

    Capabilities:
    Carrier Detect: yes


    Wired Properties
    Carrier: off




    - Device: eth0 -----------------------------------------------------------------
    Type: Wired
    Driver: bnx2
    State: unmanaged
    Default: no
    HW Address: D4:AE:52:97:78:6B


    Capabilities:
    Carrier Detect: yes
    Speed: 100 Mb/s


    Wired Properties
    Carrier: on

    for /etc/network/interfaces



    # The loopback network interface
    auto lo
    iface lo inet loopback


    # The primary network interface
    auto eth0
    iface eth0 inet static
    address 192.168.1.103
    netmask 255.255.255.0
    broadcast 192.168.1.255
    gateway 192.168.1.1


    I already set the "resolv.conf" and can send emails. The problem is we cannot recieve emails and I don't know what effects it did(the change of IP address) to our Web Server.

    Thank you so much! Its unbelievable how fast the response is

  4. #4
    Join Date
    Feb 2014
    Beans
    11

    Re: Changed IP Address from the provider NEED HELP!

    Also It seems that the others cannot access our web site from out side the network. What do I do?

  5. #5
    Join Date
    Feb 2009
    Location
    Dallas, TX
    Beans
    6,660
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Changed IP Address from the provider NEED HELP!

    Quote Originally Posted by Duane_Diaz View Post
    Also It seems that the others cannot access our web site from out side the network. What do I do?
    That was expected.

    You can either distribute the new IP address, or (what I'd do) subscribe to a Dynamic DNS service, so you can send them a name instead of an IP (for instance myserver.np-ip.org).

    Regards.

  6. #6
    Join Date
    Feb 2009
    Location
    Dallas, TX
    Beans
    6,660
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Changed IP Address from the provider NEED HELP!

    It looks that the server is connected to a router, so you may not need to do anything on the server.

    If you got a new router, you may need to check if the LAN is set to work with 192.168.1.*, and also that the server address (192.168.1.103) is outside the range of the DHCP range.

    Hope it helps. Let us know how it goes.
    Regards.

  7. #7
    Join Date
    Feb 2014
    Beans
    11

    Re: Changed IP Address from the provider NEED HELP!

    Sir how do I look if 192.168.1.193 is outside the range of DHCP? Also the router's LAN is set up on 192.168.1.1 already, is there chance that this is connected to port forwarding issues because the router was restarted and the port forwarding has been deleted.

  8. #8
    Join Date
    Feb 2009
    Location
    Dallas, TX
    Beans
    6,660
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Changed IP Address from the provider NEED HELP!

    Quote Originally Posted by Duane_Diaz View Post
    Sir how do I look if 192.168.1.193 is outside the range of DHCP?
    You need to get into the router admin page. Usually you use the router url in your browser (192.168.1.1). There, you should be able to navigate though the admin pages. Find the one that manage DHCP.
    Quote Originally Posted by Duane_Diaz View Post
    is there chance that this is connected to port forwarding issues because the router was restarted and the port forwarding has been deleted.
    Very unlikely. Routers don't delete port forwarding rules when restarted.

    On the other hand, If the router is new, or was reseted to restore factory settings, you need to create all the rules again.

    Regards.
    Last edited by papibe; February 27th, 2014 at 07:41 AM. Reason: syntax

  9. #9
    Join Date
    Feb 2014
    Beans
    11

    Re: Changed IP Address from the provider NEED HELP!

    Thank you sir. but sir do we need to set those up so that the others can view our web page? to make our web portal online?

  10. #10
    Join Date
    Feb 2014
    Beans
    11

    Re: Changed IP Address from the provider

    I already check the DHCP sir, it said its DHCP Server, Sir, what about the domain name? Should I put the domain name of the server?

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