Jump to content
Not connected, Your IP: 34.229.173.107

Recommended Posts

I read this post about doing a VPN leak test and noticed that tcpdump reports traffic to/from an IP that is a number less than my VPN IP address. For example my current address is 213.152.162.165 but tcpdump reports 213.152.162.164:

 

sudo tcpdump -n -i 1 not host 213.152.162.165 2>&1 | tee tcpdump.log

 

11:17:44.277413 IP 192.168.1.2.42576 > 213.152.162.164.443: UDP, length 117
11:17:44.325177 IP 213.152.162.164.443 > 192.168.1.2.42576: UDP, length 165

Is this normal and if yes why the difference?

 

Share this post


Link to post

The IP ending in 164 that is one lower is the entry IP address, the IP which you connect to.

The one ending in 165 is the exit IP, which everyone else sees.

This prevents correlation attacks.

Share this post


Link to post

The IP ending in 164 that is one lower is the entry IP address, the IP which you connect to.

The one ending in 165 is the exit IP, which everyone else sees.

This prevents correlation attacks.

 

Why the repeat?

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
  • Security Check
    Play CAPTCHA Audio
    Refresh Image

×
×
  • Create New...