---
title: "Dedicated Server Networks"
sidebar_label: "Dedicated Server Networks"
sidebar_position: 1
description: "Networks a dedicated server can be connected to, how connections to private and public networks are organized, and how to configure a network interface on a server"
---

import Formbricks from '@theme/MDXComponents/Formbricks'

# Dedicated server networks

Dedicated servers are connected to Selectel's network infrastructure by default and can be connected to:

* to [a public network](/dedicated/networks/public-networks-and-subnets.mdx) (internet);
* [a private network](/dedicated/networks/private-networks-and-subnets.mdx) (local area network).

Some [Chipcore Line](/dedicated/order/dedicated-configurations.mdx#prebuilt-servers) servers are connected only to a public network; you cannot connect them to a local area network.

To connect a server to both a public and a private network, use separate network interfaces ([aggregated network interface group](/dedicated/networks/mc-lag.mdx)):

* internet port;
* port for a private network.

You can view information about server ports in the [Control Panel](https://my.selectel.ru/servers/): in the top menu, click **Products** → **Dedicated Servers** → **Servers** → server page → tab **Ports**.

The server is automatically added to a shared VLAN for a public network, and it is allocated one IPv4 [public IP address from a shared subnet](/dedicated/networks/public-networks-and-subnets.mdx#public-shared-ips).

If only one dedicated server is ordered on the account, a VLAN for a private network is not allocated. A VLAN for a private network is automatically allocated when ordering a second and subsequent dedicated servers on the account. One VLAN for a private network in one pool is allocated per account. If you need a VLAN for a private network, for example, to configure connectivity with a firewall or a cloud server, [submit a ticket](https://my.selectel.ru/tickets/create).

You can view a list of all VLANs in the [Control Panel](https://my.selectel.ru/servers/network/networks): in the top menu, click **Products** → **Dedicated Servers** → **Network** → tab **VLAN**.

To connect to the network, you may need to [configure network interfaces on the server](/dedicated/networks/configure-network-interface-on-server.mdx).

![](https://423.selcdn.ru/kb/dedicated-about-networks-LANG-THEME.png)

If a dedicated server is not accessible over the network, you can connect to it via the [KVM console](/dedicated/manage/kvm-console.mdx). For Chipcore Line servers, you can order the additional service  [IP-KVM connection for 3 hours](/dedicated/about/additional-services.mdx#additional-services-with-one-time-payment) or [boot in recovery and diagnostic mode](/dedicated/troubleshooting/boot-to-recovery.mdx).

## Connection to a third-party operator \{#network-to-outside-operator}

Many telecom operators have a point of presence in Selectel data centers. You can organize a direct connection with them using the Direct Connect service:

* [Direct Connect — physical port](/direct-connect/physical/connect.mdx) — port rental on a Selectel access switch. In this case, you organize the connection from the telecom operator's side (verifying the possibility of connecting to Selectel, checking cross-connects, paying for communication channels, etc.) on your own;
* [Direct Connect — logical port](/direct-connect/logical/connect.mdx) — lease of a pre-established, reserved connection between Selectel and a partner backbone operator.

## Blocked ports \{#blocked-ports}

To protect the Selectel infrastructure from malicious network activity, [certain TCP/UDP ports are blocked](/infrastructure/blocked-ports.mdx), including port 25 (e-mail mailings).

If the port does not fall under the specified restrictions, check its availability from the OS using the `Nmap` utility.

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