OPNsense Forum

Archive => 18.1 Legacy Series => Topic started by: Redguy on July 13, 2018, 11:42:05 pm

Title: whatsmyip.com shows my internal IP behind NAT ?? How to block it ?
Post by: Redguy on July 13, 2018, 11:42:05 pm

I opened the whatsmyip.com website, which showed my public IP.  No surprise there.

However, it also showed the inside IP address of my laptop ?

Is there any way to block this information ? I just want my outside IP to show, not which internal machine is behind the session ?!

Title: Re: whatsmyip.com shows my internal IP behind NAT ?? How to block it ?
Post by: mimugmail on July 14, 2018, 12:15:26 am

Do you use a proxy (or transparent)?

Title: Re: whatsmyip.com shows my internal IP behind NAT ?? How to block it ?
Post by: guest15389 on July 14, 2018, 10:21:26 pm

That's neat. I don't use a proxy at all and I can my LAN address there too.

Title: Re: whatsmyip.com shows my internal IP behind NAT ?? How to block it ?
Post by: guest15389 on July 14, 2018, 10:27:44 pm

Here is more info on how it gets out:

https://superuser.com/questions/1174019/how-can-i-reliably-prevent-my-local-ip-address-leaking-in-the-web-browsers

Title: Re: whatsmyip.com shows my internal IP behind NAT ?? How to block it ?
Post by: Redguy on July 19, 2018, 08:25:59 am

Same for my, i dont use a proxy either..    it not such a big issue that a private ip shows up, it's not routable from the outside.. but it does identify th eip of the specific computer, which is a privacy issue..

Title: Re: whatsmyip.com shows my internal IP behind NAT ?? How to block it ?
Post by: Redguy on July 19, 2018, 08:28:38 am

After reading the article mentioned above it seems that my chrome browser is leaking this info..


Very strange..  stopping this would mean pluging every browser of every client pc..    hmpff

Title: Re: whatsmyip.com shows my internal IP behind NAT ?? How to block it ?
Post by: guest15389 on July 19, 2018, 01:22:49 pm

You can use Firefox/Safari :)