Octopus Deploy 3.4 introduces expanded proxy support, allowing both Polling and Listening Tentacles to communicate through proxies, which was previously limited. This update enhances the flexibility of network configurations by enabling the use of different proxy servers for different Tentacles and eliminates the need for special firewall allowances in many cases. The changes are facilitated by teaching the Halibut communications library to operate through proxies, overcoming the limitations of previous versions that relied on .NET's System.Net.WebRequest. Users can set up proxy details in the Octopus configuration for Listening Tentacles, while Polling Tentacles require proxy setup during installation. This release aims to simplify and expand deployment options for users working within network-restricted environments.