<p>Plesk, along with all its services, can only work properly once the necessary ports have been opened on the server. As some operating systems have these ports closed by default, we’ve provided a list of services and their corresponding protocols for your reference.</p>

<div class="table-responsive">
<table class="table align-middle">
	<tbody>
		<tr>
			<td height="33" width="300"><b>Service Name</b></td>
			<td height="33" width="200"><b>Ports Used by the Service</b></td>
		</tr>
		<tr>
			<td height="33" width="300">Administrative interface of Plesk over HTTPS</td>
			<td height="33" width="200">TCP 8443</td>
		</tr>
		<tr>
			<td height="33" width="300">Administrative interface of Plesk over HTTP</td>
			<td height="33" width="200">TCP 8880</td>
		</tr>
		<tr>
			<td height="33" width="300">Web server</td>
			<td height="33" width="200">TCP 80, TCP 443</td>
		</tr>
		<tr>
			<td height="33" width="300">FTP server</td>
			<td height="33" width="200">TCP 21</td>
		</tr>
		<tr>
			<td height="33" width="300">SSH (secure shell) server</td>
			<td height="33" width="200">TCP 22</td>
		</tr>
		<tr>
			<td height="33" width="300">SMTP (mail sending) server</td>
			<td height="33" width="200">TCP 25, TCP 465, TCP 587</td>
		</tr>
		<tr>
			<td height="33" width="300">POP3 (mail retrieval) server</td>
			<td height="33" width="200">TCP 110, TCP 995</td>
		</tr>
		<tr>
			<td height="33" width="300">IMAP (mail retrieval) server</td>
			<td height="33" width="200">TCP 143, TCP 993</td>
		</tr>
		<tr>
			<td height="33" width="300">Domain Name server</td>
			<td height="33" width="200">UDP 53, TCP 53</td>
		</tr>
		<tr>
			<td height="33" width="300">Plesk upgrades and updates</td>
			<td height="33" width="200">TCP 8447</td>
		</tr>
		<tr>
			<td height="33" width="300">MySQL</td>
			<td height="33" width="200">TCP 3306</td>
		</tr>
		<tr>
			<td height="33" width="300">MSSQL</td>
			<td height="33" width="200">TCP 1433</td>
		</tr>
		<tr>
			<td height="33" width="300">Plesk SQLAdmin Site</td>
			<td height="33" width="200">TCP 8401</td>
		</tr>
	</tbody>
</table>
</div>

<p><b>Congratulations!</b> You just learned about your server’s Plesk firewall requirements.</p>

Plesk Firewall Requirements

https://customerservice.web.com/prweb/PRAuth/app/WebKM_/datacontent/Image/rteImages

Service Name	Ports Used by the Service
Administrative interface of Plesk over HTTPS	TCP 8443
Administrative interface of Plesk over HTTP	TCP 8880
Web server	TCP 80, TCP 443
FTP server	TCP 21
SSH (secure shell) server	TCP 22
SMTP (mail sending) server	TCP 25, TCP 465, TCP 587
POP3 (mail retrieval) server	TCP 110, TCP 995
IMAP (mail retrieval) server	TCP 143, TCP 993
Domain Name server	UDP 53, TCP 53
Plesk upgrades and updates	TCP 8447
MySQL	TCP 3306
MSSQL	TCP 1433
Plesk SQLAdmin Site	TCP 8401