At 9:00 PM -0500 11/28/05, AB wrote:
Dan responded:
>If you want a new public IP address, that's easy
enough. >Depending on which cable system you use, there are
various >techniques. The easiest is to unplug your cable modem for
a >while, to allow it's DHCP lease to expire.
This does not work on my modem. The IP doesn't change or expire. I
have heard about cloning the MAC address to accomplish this. Anyone
no if this will work?
Nope. Cloning is how the lazy insert a NAT Router between their
computer and a cable modem after the modem has seen the MAC of their
computer.
Ok. So your ISP is using a long lease time (actually a good thing,
IMO), which prevents a simple modem shutdown from getting a new IP.
So you need to fully release your public DHCP lease, then fetch a
whole new one with a new IP assignment... Spin the wheel, folx!
Let's play "Can you fool the DHCP Server?!"
Having the Linksys router complicates things because AFAIK it has no
full lease release function. But,... try this:
1. Unplug both the modem and the LinkSys.
2. Connect the modem directly to your Mac.
3. Wait 30 seconds.
4. Plug in the modem; wait for it to finish initializing.
5. Boot your Mac.
5. Shutdown your Mac and immediately unplug the modem.
The complete shutdown includes a full DHCP release.
6. Hook the modem back up to the Linksys.
7. Wait 30 seconds.
8. Plug in the modem; wait for it to finish initializing.
9. Boot the LinkSys.
10. Boot yer Mac.
Now, hopefully, your LinkSys will have been given a fresh DHCP lease
with a new IP address.
G'luck.
Technique 3 -- that I use... My NAT Router is actually an old
PowerMac running IPNetRouter. I just use IPNetMonitor's DHCP Test
function to get a new lease with a new IP. Then I reboot. The ISP's
DHCP server is kindof dumb - it just gives me a copy of the newest
lease with that new IP. Of course, I did get that phone call one day
after I'd run that test function a dozen times. Apparently Comcast
didn't like me having a dozen IPs allocated! :P
>Is there some specific aspect of security that's worrying you?<
No just the whole lack of privacy. For example, I have gone to
non-Mac websites and ads appear for Mac related products because of
my previously tracked surfing and/or my OS and browser info. being
made available.
Mostly that's your own cookies they're reading. You could dump da cookies.
As for the browser info... You can spoof that to anything you want.
But then the MS-effect will cause things to break.
I don't like the tracking some sites do, either. :\
- Dan.
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