---
title: "What ports does the Pharos Omega PS150 running in Firewall mode block/restrict?"
slug: "what-ports-does-the-pharos-omega-ps150-running-in-firewall-mode-blockrestrict"
updated: 2024-04-04T06:18:08Z
published: 2024-04-04T06:18:08Z
canonical: "kb.pharos.com/what-ports-does-the-pharos-omega-ps150-running-in-firewall-mode-blockrestrict"
---

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

# What ports does the Pharos Omega PS150 running in Firewall mode block/restrict?

The following answer outlines the ports that are restricted when using the Pharos Omega running in Firewall mode.

---

Pharos Omega PS150 devices running in firewall mode limit the use of the following printer ports:

- TCP/IP 515
- TCP/IP 9100

These ports can be restricted to provide access to only certain IP addresses, such as a print server.

## Related

- [Why can I browse to my Printer or MFP configuration page after turning on firewall mode on the Omega PS150?](/why-can-i-browse-to-my-printer-or-mfp-configuration-page-after-turning-on-firewall-mode-on-the-omega-ps150.md)
- [Ports used by Omega PS150](/ports-used-by-omega-ps150.md)
- [When I connect my Pharos Omega PS150 network traffic increases.](/when-i-connect-my-pharos-omega-ps150-network-traffic-increases.md)
- [What does “Required Printer network Settings” mean on the Pharos Omega PS150 web page?](/what-does-required-printer-network-settings-mean-on-the-pharos-omega-ps150-web-page.md)
- [Pharos Omega PS150 2.1.1 Revision 6605](/pharos-omega-ps150-211-revision-6605.md)