IP Address

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Guest

I am trying to determine if I have a dynamic or static IP address for my
home network. My ISP tells me that I have a dynamic one but even after I
shut all machines down, disconnect the router and cable modem, when I run a
test I get the same IP address every time. Can someone tell me how, or even
if it's possible to determine whether I have a dynamic or static IP address?
Thanks.
 
I am trying to determine if I have a dynamic or static IP address for my
home network. My ISP tells me that I have a dynamic one but even after I
shut all machines down, disconnect the router and cable modem, when I run a
test I get the same IP address every time. Can someone tell me how, or even
if it's possible to determine whether I have a dynamic or static IP
address? Thanks.
Click to expand...


If your ISP says it's dynamic, it's dynamic!

Bear in mind that even dynamic IP address assignments can be fairly
'sticky'.
In otherwords, if you re-connect quickly, you may well get re-assigned the
same IP address.
So there's no guarantee the address will change, but no guarantee it won't,
either.

You don't sat what test you run.
If you use ipconfig /all at the command prompt, you may well see local IP
addresses like 192.168.0.2. These are being assigned not by your ISP, but
by your router. There's no reason to change this. To see your external (
public ) IP address which your ISP assigns you, then go to
www.whatismyip.com.

If you need to change your public IP address, then I'd power off the router
for at least 30 mins, and then re-connect.

There are few legitimate reasons you would need to do this,
the only ones I can think of are:

1) Your IP address got blacklisted from some service;
2) The IP address you got was previously used by a P2P user,
and you are getting continuous attempts to connect to you from
the other peers.
 
I ran the test from: http://www.lawrencegoetz.com/programs/ipinfo/ and it
has a warning message, "If you used a router/proxy you will not get the
correct IP address" so I am confused.

I wanted to try to upload a few Webs to a site but am concerned that if the
address is dynamic no one (but me) will be able to see them.
 
I ran the test from: http://www.lawrencegoetz.com/programs/ipinfo/ and it
has a warning message, "If you used a router/proxy you will not get the
correct IP address" so I am confused.

I wanted to try to upload a few Webs to a site but am concerned that if
the address is dynamic no one (but me) will be able to see them.
Click to expand...



Use the page I pointed to, it will show your public IP address.
This is the IP address others on the Internet must use to contact you.
I don't know what you mean by :
I wanted to try to upload a few Webs to a site
Click to expand...

Do you mean you want to run a web server on a PC at your side of the router?
If so, then you need to do a few things:

1) Check the Terms and Conditions of your ISP to see if that's permitted;
2) Register with a Dynamic DNS provider to keep a name pointing at your
dynamic public IP address;
3) Use an update client to keep (2) up-to-date ( I used
http://www.directupdate.net/ )
4) On the router, forward port 80 to your web server's Internal IP address.
 
Yes I want to run a web server on a PC at my side of the router. My current
dilemma is my ISP (cable) doesn't allow me to use them to post a Web unless
I upgrade my service to a business class one. I don't want to break any
rules. The local telephone company says they don't mind but I will have to
get a static IP which they don't sell. They also won't recommend anyone in
particular to provide a static IP.

The cable company will provide a downstream connection of 756kb for $130 mo.
Upstream, I guess, doesn't really matter. The telephone company will provide
a downstream of 384kb for $36 mo. It seems an easy decision to switch to the
telephone company based on cost but I don't want to get "hooked" into
anything I will later regret. I really appreciate your help.
 
Yes I want to run a web server on a PC at my side of the router. My
current dilemma is my ISP (cable) doesn't allow me to use them to post a
Web unless I upgrade my service to a business class one. I don't want to
break any rules. The local telephone company says they don't mind but I
will have to get a static IP which they don't sell. They also won't
recommend anyone in particular to provide a static IP.

The cable company will provide a downstream connection of 756kb for $130
mo. Upstream, I guess, doesn't really matter. The telephone company will
provide a downstream of 384kb for $36 mo. It seems an easy decision to
switch to the telephone company based on cost but I don't want to get
"hooked" into anything I will later regret. I really appreciate your help.
Click to expand...



The Phone Company is not entirely correct.
You don't *need* a static IP to run a web server.
You can use a DynamicDNS system like I described earlier.
So long as they are not blocking anything, then a dynamic IP will work fine.

Google on "Dynamic DNS".
 
Thanks for your help.
Ron Lowe said:
The Phone Company is not entirely correct.
You don't *need* a static IP to run a web server.
You can use a DynamicDNS system like I described earlier.
So long as they are not blocking anything, then a dynamic IP will work
fine.

Google on "Dynamic DNS".
Click to expand...
 
That link was helpful. Thanks Jack.
Jack said:
Hi

If the ISP says dynamic you better believe it.

Unlike Dynamic DSL that changes every Log ON (it is a PPPOE thing).
Internet
Cable IP might change at the will of the ISP.

I have a RR Internet Cable service (a scope of 4 years); the IP is
changing
every four months.

However I can not count on the exact timing so I use a Free DNS service.

May be this can Help.

Connecting through the Internet to a Home / SOHO, Server/Network -
http://www.ezlan.net/myip.html

Jack (MVP-Networking).

P.S. make sure that what you plan to do is within the Scopr of your TOS.
Click to expand...
 
Hi

If the ISP says dynamic you better believe it.

Unlike Dynamic DSL that changes every Log ON (it is a PPPOE thing). Internet
Cable IP might change at the will of the ISP.

I have a RR Internet Cable service (a scope of 4 years); the IP is changing
every four months.

However I can not count on the exact timing so I use a Free DNS service.

May be this can Help.

Connecting through the Internet to a Home / SOHO, Server/Network -
http://www.ezlan.net/myip.html

Jack (MVP-Networking).

P.S. make sure that what you plan to do is within the Scopr of your TOS.
 
I am trying to determine if I have a dynamic or static IP address for
my home network. My ISP tells me that I have a dynamic one but even
after I shut all machines down, disconnect the router and cable modem,
when I run a test I get the same IP address every time. Can someone
tell me how, or even if it's possible to determine whether I have a
dynamic or static IP address? Thanks.
Click to expand...

Have you poked around in the different configuration windows for your
router? Lots of ISP's lease out IP addresses for several days, or more.
Somewhere in the router it may tell you what the normal lease duration is,
which would explain why, even tho you believe the address to be "dynamic",
it seems to be staying the same.
Have fun!

terry
 
Complete instructions for running a Web Server from home are here;
http://www.dslwebserver.com/main/fr_index.html?/main/main.html
I was successful in getting my Linux box to act as a web server using this
site.
My ISP doesn't allow this either, but they seem to have a benign enforcement
policy as long as the traffic is not excessive. (This may not apply to your
ISP).
From a cost point of view you may be better off buying some space from a
Host company. I administer 10 different sites, and the cost is about
$100.00/year for space.
 
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