IP address Help please

Ian Austin · 01 February 2011, 21:58

Just a quick question, is an IP address per computer or an connection address

Cheers

Erin · 01 February 2011, 22:09

Assuming I understand your question then each device on a network needs an independant IP address. They all share a subnet mask however.

Ian Austin · 01 February 2011, 22:22

Hi Erin

I want to enquire about a boat, but i dont want the seller to know it's me as i have contacted him before, just wondered if i used my wifes laptop can it be linked to me by any IP address or anything else, or am i going to use my next doors connection.

Cheers

Bigmuz7 · 01 February 2011, 22:34

Do you have a static ip from your service provider ? , Unlikely unless you specified it for VPN useage.. do you use a router and switch it off at night ? without a static IP you'll probably get a different IP each time you power your router up. All your machines behind that router have a small selection of local network addresses allocated by your router as you power up each machine, unless you have a machine specified to be on a fixed local address, which should all be invisible if your router is set up properly.

If you go next door .. you avoid all these dont knows,if you are unsure , and really fox him because its probably a different ISP to yours anyway

Ian Austin · 01 February 2011, 22:42

Hi
I am with Sky, i do have a router and no i dont turn it off (should i

), next door is also with Sky, i have one desk top computer and a laptop and the wife has 3 laptop (2 for work), sorry if i seem thick but i struggle with computers, give me an engine in a box and i can rebuild it

Cheers

Nos4r2 · 01 February 2011, 22:54

Take one of her laptops to a public WiFi point and do it. It won't be the same IP addy as the last time you contacted him.

Ian Austin · 01 February 2011, 23:02

Cheers for the replies guys

How can i find out the sellers ip address, is it possible and i still have old e mails, can i find IP address for these.

Nos4r2 · 01 February 2011, 23:23

Assuming you're using outlook express, right click on the message while it's closed and in your inbox. Click 'properties' then click the 'details' tab.The sender's IP addy will be in there.

Look for 'Return-Path'. It should be just underneath it.

Code:

Return-Path: <member@ebay.co.uk>
Received: from mxpool14.ebay.com (mxpool14.ebay.com [66.135.197.20])

Ian Austin · 01 February 2011, 23:40

Nos

I am useing internet explorer and firefox on me desktop

Poly · 02 February 2011, 00:11

Quote:

Originally Posted by Nos4r2

Assuming you're using outlook express, right click on the message while it's closed and in your inbox. Click 'properties' then click the 'details' tab.The sender's IP addy will be in there.

Look for 'Return-Path'. It should be just underneath it.

Code:

Return-Path: <member@ebay.co.uk>
Received: from mxpool14.ebay.com (mxpool14.ebay.com [66.135.197.20])

Not sure about in OE - but in thunderbird I have two Received from lines - the first one in the IP address of the senders mail server, the second is the IP address of the machine that sent the message to the server (i.e. the sender's IP address). I guess with complex messages/routes it can be more convoluted!

Ian,

In simple terms (assuming there is nothing odd about your home network) every machine will appear to the "outside world" as having the same IP address (you can check this here http://www.whatsmyip.org/). As Bigmuz says with many ISPs when you reset your router you'll get a new ISP - but this is not always the case (e.g. if you have a static IP address, or even on my router (O2broadband) the default is to "reuse" the IP address unless you turn it off for something like 24 hours). You could force it to change - but its more hassle than its worth. There are some Proxy services around which will let you hide your IP - not sure if these will work with webbased mail services?

If you access email on your phone (via 3g or gprs NOT over your wireless) it will presumably have a different IP addy.

Ian Austin · 02 February 2011, 00:27

Cheers Polwart
I think

, i have just got myself a new phone (HTC Desire HD) so i will have a go at setting up an e mail address on that

I can then go to the marina and use the wifi there

SPR · 02 February 2011, 10:58

Hotspot Shield http://anchorfree.com as featured on gadget show, when you enable it it has some advertising, but its free!

Is a free VPN service that will give you a random USA or UK IP address.

S.

Ian Austin · 02 February 2011, 21:54

Forgot to turn router off last night, so turned it off when i surfaced from me pit, left it off for about 10 mins fired up got the same IP address, so turned it off and went to work, fired it up tonight and

all the numbers are different.

But i got it sorted now

Got a client to send an e mail for me and its not even going to be in the same county

Cheers for all your help