Assign static IP with direct cable into modem (no router)

Posted on 2013-05-30
Last Modified: 2013-05-30
Hi Experts;
Here's my configuration:
1 PC (win 7) cabled directly into a DSL modem.
I want to make my IP static.

I've set the IP with properties on Local network connection; IPv4 ~ but when I validate the connection the Windows Network diagnostics t-shooter wants me to enable DHCP, which undoes my static settings.

No router involved.
Attached are screen shots of properties before & after I change settings.
Question by:k heiutz
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Accepted Solution

iammorrison earned 167 total points
ID: 39208170
Why didnt you set the mask? It will try to troubleshoot because its missing  info
LVL 23

Assisted Solution

tailoreddigital earned 167 total points
ID: 39208415
LVL 14

Assisted Solution

Geisrud earned 166 total points
ID: 39208736
Going directly into a DSL modem, your IP (which will be a public IP address) is assigned by your ISP.

If you want a static IP address, you can usually pay a bit extra to the ISP - even then, it is handled on their end, and you still should keep your configuration set to DHCP.
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Expert Comment

ID: 39208753
Geisrud makes a good point. We were assuming that you purchased a static address from your provider, but can you confirm whether this is the case?

Author Comment

by:k heiutz
ID: 39208805
Thank you everyone.
I had not purchased a static IP from my ISP. I have a call into them now.
The subnet mask was set to but it wasn't in the graphic.

One other question, If I go w/ the static IP; is my system at high risk of attack?
LVL 23

Expert Comment

ID: 39208812
"One other question, If I go w/ the static IP; is my system at high risk of attack?"

The link i posted answers this question

Expert Comment

ID: 39208889
Also, that mask most likely would not have worked either way. You were assuming the address had a 24 bit mask.

Author Closing Comment

by:k heiutz
ID: 39208912
Thanks again all.
We've decided against the static IP. I appreciate the information from all of you.
LVL 23

Expert Comment

ID: 39209137
You can use a service to make a dynamic IP function like a static via a hostname,


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