Changing your IP address??

Good Evening,

I'm a Comcast HSI customer and from my understanding its susposed to use dynamic IP addresses but it never does for me. With ipconfig I see the lease to my address is renewed every 7 days with the same address.....

Due to security concerns I would like to change my IP address, so can anybody help me out? I've read about the ipconfig/release then ipconfig/renew commands....will that work? I also read the only way to change your ip address is to change your mac address of your router or ethernet card....is that true? My computer is currently down so I cant try these out myself to see if it works or not. Comcast's support is no help.....

Thanks

-J

 

Either:

• Plug a different physical device (router/ethernet connection) into your modem or
• Spoof a new MAC address from whatever you plug into your modem (either your router or PC)

and power cycle the router/PC/modem. IP's are leased to MAC addresses, this should force a new one.

Blue

 

Untouchable J,

IP addresses can be tied to MAC addresses but are not necessarily. Disconnecting and reconnecting your modem will cause it to renegotiate the connection and possibly pick up a new IP address but this does depend on how your ISP has configured their DHCP servers.

However as long as you are running a well-configured firewall (i.e. one set up to block any unnecessary traffic) then I would suggest that there is little value in changing your IP address. If you wish to alter it for the sake of online privacy, then you should consider using an anonymising proxy (see Don't Fear Internet Anonymity Tools for a nice, long discussion on these).

 

I've never tried this, but I downloaded it once, just in case I ever needed it:

http://www.klcconsulting.net/smac/

 

A freeware program for doing this can be found at Code Project: MacIDChanger. It involves a registry change and an adapter reset so there seems little point in paying $15 for KLC Consulting's hot-air marketing "We are a proud leader in the Windows MAC Address Modification Utility Research." LOL!