I work on a Mac computer. I develop both on Mac and Windows.
A lot of times I find myself trying to intercept some traffic coming from my Mac on my Fiddler instance which lives on my Windows VM. The main reason for this is the fact that I haven’t been able to successfully use Fiddler on Mac in a native way.
Eric Lawrence, the creator of Fiddler has a pretty interesting article which helps a lot to achieve the above. The main points are the following:
- Install VirtualBox and create a Windows or Linux virtual machine.
- In VirtualBox Manager, select the VM and click the Settings icon at the top of the window.
- Click the Network icon at the top of the window and change Attached to: to Bridged Adapter. Click Ok.
- Start the Virtual Machine and install Fiddler.
- Start Fiddler and click Tools > Fiddler Options > Connections. Tick the “Allow remote computers to connect” box.
- Restart Fiddler.
- Note the IPv4 address of the Fiddler instance by hovering over the Online icon in Fiddler’s toolbar, or run ifconfig eth0 in the terminal (Linux) or ipconfig (Windows).
- On the Mac, click the Apple Menu > System Preferences > Network.
- Click the Advanced button.
- On the Proxies tab, Enable the Web Proxy (HTTP) and Secure Web Proxy (HTTPS) options to point to the IPv4 address of the virtual machine (found in Step #7) using port 8888.
- To decrypt HTTPS traffic, you’ll need to install the HTTPS certificate in the Mac’s keychain. You can download this certificate by visiting the http://IPAddress:8888.
Find the original article from Eric here.
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