# Blocked ports (VPS/VDS)

For security reasons, a number of ports frequently used by attackers are blocked on all virtual servers (VPS/VDS).

{% hint style="warning" %}
Incoming and outgoing traffic is restricted for TCP/UDP ports **17, 111, 135, 137, 138, 139, 389, 427, 445, 520, 1900, 3702, 11211**\
\
Outgoing traffic is restricted for TCP/UDP ports **25, 465**
{% endhint %}

## Unblocking ports 25, 465

These ports can be unblocked upon request. To do so, please [contact support](https://wiki.spacecore.pro/en/customer-service/how-to-contact-support?fallback=true). Please note that each request is considered on an individual basis. Staff reserve the right to request verification.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://spacecore.gitbook.io/wiki/en/information-display/blocked-ports.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.