---
title: "Connect a CTERA Drive Share/Protect (Agent) to a CTERA Portal over TCP 443"
slug: "how-to-15"
updated: 2026-06-15T12:41:41Z
published: 2026-06-15T12:41:41Z
canonical: "kb.ctera.com/how-to-15"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.ctera.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect a CTERA Drive Share/Protect (Agent) to a CTERA Portal over TCP 443

By default, a CTERA Drive Share/Protect (Agent) attempts to establish a connection and perform cloud backup and synchronization with CTERA Portal over port TCP 995. This can be configured to connect to the CTERA Portal over TCP 443 using either a proxy server or load balancer at the data center.

## **Step-by-step guide**

**Note**: Only HTTPS proxies that support the CONNECT method can be used.

**To set up a drive app to use a proxy server:**

1. In the **Welcome to CTERA Agent** window, click **Advanced**.

![](https://cdn.document360.io/30792387-cdcb-4791-aa14-94929bbcd3fe/Images/Documentation/Proxy1.png?sv=2026-02-06&spr=https&st=2026-11-11T04%3A17%3A31Z&se=2026-11-11T05%3A17%3A31Z&sr=c&sp=r&sig=WaM5utpYh4Awoo0bbNy021uY7%2FEtPNUrUCpcG1fw5f8%3D)
2. For **Proxy Settings**, select **Use HTTP Proxy** and configure the appropriate settings and click **Save**. The proxy settings set in the **Advanced** window are saved as the default proxy settings. If you connect not using these proxy settings and then use the proxy settings again, these default settings are displayed.

## Related articles

[Change the Device Connectivity Port from TCP 995](/v1/docs/how-to-8)