Compared to Proxifier, what makes it special? As far as I know, Proxifier supports UDP, as we can see when we use HTTP/3.

[introspection3]

Compared to Proxifier, what makes it special? As far as I know, Proxifier supports UDP, as we can see when we use HTTP/3.

[Anof-cyber]

Firstly, the project’s primary goal was to create a free and open-source tool. However, Proxifier does not support HTTP/3 and UDP. It can only log or block UDP traffic, not redirect it to a proxy, which was a key reason for this project. My main project, https://github.com/InterceptSuite/InterceptSuite, is currently developing UDP and DTLS MITM capabilities. No tools support UDP via proxy.

Other tools are there, but they use VPN/tun0, which is too noisy and lacks support for redirecting specific apps or IPs with rule-based approaches like Proxifier provides. This makes it difficult to build and test InterceptSuite for UDP and DTLS MITM.
And with the VPN/Tun0 method, you cannot have a proxy app on the same system as the VPN client, which is a major issue for me.

[introspection3]

thank you sir. Can it support proxying VMware virtual machines?

[Anof-cyber]

It depends. If you want to intercept traffic from a virtual machine (VM) running software like VMware or VirtualBox, it acts like any other application's traffic.

However, if you're asking about using ProxyBridge on your Windows host machine to redirect traffic from a VM (whether it's Linux or Windows) inside VirtualBox/Vmware, it may work based on the network configuration, such as using NAT. Keep in mind that the rules may not function based on the process name. For example, if you execute the curl command within the VM and then add a ProxyBridge rule on the host Windows machine, it won't work as expected. This is because, if NAT is used in the VM, the Windows network stack will identify the process as VirtualBox or VMware instead of curl, since curl is part of the VM's environment.

I haven't tested this with VM traffic, but in most cases, it should work if NAT is used. Just remember that the rules need to be applied to the VM application as a whole, rather than on a per-application basis.