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  1. #1

    Member Since
    Dec 15, 2006
    Setting up a static IP address
    Hi there,

    I'm about to embark on port forwarding and setting up a static ip address.

    Can anyone tell me in plain English, not how to do this, but whether there is a bad side to it, like will it damage my system, does it leave me open to attack / viruses, will it crash my network and stop it from connecting to the internet


    Is it reversible? If it all goes horribly wrong, can I change it back to how it was and would I need to?

    Any advice on the pros and cons of static ip addresses / portforwarding would be gratefully received.

    All the best


  2. #2

    cradom's Avatar
    Member Since
    Feb 14, 2004
    Groves, Texas
    13in macbook - 10.11 --- 21in. iMac 10.11 --- HP win 8
    I just did it to use Azureus. No it will not damage your system. It will not leave you open to attacks. It is reversible (as I found out the first time I did it and did it wrong )

    When you do it, print out the instructions first, could be hard to go back to the web page for them after changing some settings.
    Craig Domingue
    (='.'=) This is Bunny. Copy and paste Bunny into your
    (")_(") signature to help him gain world domination

  3. #3

    Member Since
    Dec 15, 2006
    Thanks Cradom, I will.

  4. #4

    cazabam's Avatar
    Member Since
    Jun 06, 2006
    MacBook 2.0GHz White, 512MB RAM, 60GB HDD
    There's no danger to assigning a static IP to a machine. You don't even have to move your entire network to static IP; you can just do it for the one or two machines that need it.

    Automatic assignment of an IP is done with DHCP. Your router will have a range of IPs that it will assign via DHCP. For example, mine will allocate to to DHCP clients. This leaves me to for use as static IPs ( is the router itself).

    There is nothing inherently dangerous about static IP - it's just a more manual way of doing what DHCP does for you. The worst that can happen is that you will get a problem and just change the settings back to what they were (make a note of EVERY setting you change).

  5. #5

    mac57's Avatar
    Member Since
    Apr 29, 2006
    St. Somewhere
    iMac 27" 3.4 GHz, 256 GB SSD, 2 TB HDD, 8 GB RAM
    I have run my Mac both ways - static IP up until a few weeks ago, and then DHCP dynamic IPs since I took out Verizon FiOS (what a GREAT service that is!! Can you say "FAST"? <grin>). It has worked seamlessly both ways. So, it is definitely reversable - just change a few settings in the Network area of your System Preferences.
    My Macs: iMac 27" 3.4 GHz, Mac Pro 3.2 GHz, PowerMac G5 Quad 2.5 GHz, G4 Cube with 1.2 GHz Upgrade
    My iStuff: 64GB iPhone 5, 64GB iPad4, 30GB iPod Video, 16GB iPod Touch
    My OS': Mac OS X Lion, Mac OS X Snow Leopard, Mac OS X Tiger, Mac OS 9.2.2, openSUSE 10.3
    I was on the Mac-Forums honor roll for September 2007

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