Frequently Asked Questions
On rare occasions, the VPN Tracker support team might ask you to record the network traffic between your VPN gateway and your Mac. Here's how to do that:
First, you need to know the hostname or IP address of your VPN gateway. You can see it in the status page of your connection (the hostname is in the third column), or by editing your connection.
Then, follow these steps:
- Open Terminal.app, which you can find via Finder in Applications > Utilities.
- Enter the following command, and replace [hostname] with the hostname or IP adress of your VPN gateway:
sudo tcpdump -i any host [hostname] -w ~/Desktop/traffic.pcap - You will be asked for a password: this is the password of your Mac user account. You get asked for it because recording network traffic requires elevated privileges.
- After entering the password, the command appears to hang. It is now recording traffic until you press Ctrl+C (but please don't press that yet).
- If you see the command prompt again you have likely entered the wrong password. Please run the command again (Tip: press the arrow-up key to recall the command).
- Go back to VPN Tracker and start the connection you might experience trouble with.
- After you have reproduced the problem (for example, after the connection failed to connect), go back the Terminal.app window in which tcpdump is running.
- Press Ctrl+C to stop the recording.
- On you desktop, there's now a file traffic.pcap. Please send this file to equinux support.
