> For the complete documentation index, see [llms.txt](https://spacecore.gitbook.io/wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://spacecore.gitbook.io/wiki/en/information-display/blocked-ports.md).

# 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.