Will your IP Address change if you never shut off your router? MN 500

AnMig

Golden Member
Nov 7, 2000
1,760
3
81
Situation:

Trying to help a friend connect to his home computer when he is not home.


Setup:
broadband--dsl modem--wireless router (MN 500)--wireless usb nic. His provider uses dynamic ip address.


Plan:
USe UltrVNC --assign static IP address to the wireless USB NIC---tell the router to forward port 5900 to IP Address.

My main probelm is the Dynamic Ip address--

will it change if the router is always on?
will it change if the computer is shut down? with the router on?


I was also thinking of remote desktop but I dont like the way it logs off the current user when someone connects to it

peace
 

thraxes

Golden Member
Nov 4, 2000
1,974
0
0
Well, the dynamic IP is something you gotta live with.
The second the router disconnects and then reconnects, you have a new IP. Even if the router is on, if it drops the connection due to a provider induced timeout (24Hrs max connect time for my provider), you also loose that IP.

Try using a Dynamic DNS service like http://www.dyndns.org . It's free and most routers have a configuration option to upload the latest dynamic IP to DYNDNS. All your friend has to do then to access his VNC is type in the server adress: friend.dyndns.org .

I use their service for accessig FTP and VNC services on my machine when I am at my parents or at a friends house and absolutely need a certain tool which I don't want to search for.
 

Bovinicus

Diamond Member
Aug 8, 2001
3,145
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0
Unfortunately just leaving on your system and router is not going to work. DHCP servers have a time limit on how long it leases out an IP address. My ISP lets me keep the same IP address for 7 days before it changes.
 

redbeard1

Diamond Member
Dec 12, 2001
3,006
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Always on or not, the isp sets the change for the dynamic ip. There is no trick to hold it.
 

InlineFive

Diamond Member
Sep 20, 2003
9,599
2
0
You guys are right but some ISPs keep your IP address for a long time. For example, some companies will give you an IP address untill your router MAC changes which makes it seem very much like a Static IP system! I know because I get cable internet from one of these companies.

-Por
 

SilverLock

Member
Nov 18, 2003
112
0
0
It depends on the ISP. I have roadrunner and have had the same IP address now for almost a year. Their lease period is 72 hours as well. Usually they force IP changes where I am once a year.

I use my Netgear Router in conjunction with DYNDNS.org to keep my DNS resolution working after they change IP addresses.
 

Matthias99

Diamond Member
Oct 7, 2003
8,808
0
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Many ISPs will force you to refresh every 1-7 days, but they also *generally* (not a hard and fast rule by any means) give you the same one when you refresh.

It's rare to find an ISP that *won't* provide you with a static IP (possibly for a fee) if you need one, though.

Also, the Networking forum usually answers questions like this faster and better. :)