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2.4. Additional Requirements
Red Hat Satellite has some additional considerations before installation. These additional requirements must be met before starting the Satellite installation.
2.4.1. Firewall
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Protect your Red Hat Satellite environment with a firewall by blocking all unnecessary and unused ports.
The following table provides a list of port requirements for Red Hat Satellite.
| Port | Protocol | Direction | Reason |
|---|---|---|---|
| 67 | TCP/UDP | Inbound | Open this port to configure the Red Hat Satellite as a DHCP server for systems requesting IP addresses. |
| 69 | TCP/UDP | Inbound | Open this port to configure Red Hat Satellite as a PXE server and allow installation and re-installation of PXE-boot enabled systems. |
| 80 | TCP | Outbound | Red Hat Satellite uses this port to reach Red Hat Network. |
| 80 | TCP | Inbound | Web UI and client requests come in via http. |
| 443 | TCP | Inbound | Web UI and client requests come in via https. |
| 443 | TCP | Outbound | Red Hat Satellite uses this port to reach Red Hat Network (unless running in a disconnected mode for Satellite). |
| 4545 | TCP | Inbound and Outbound | Red Hat Satellite Monitoring makes connections to rhnmd running on client systems, if Monitoring is enabled and probes are configured for registered systems. |
| 5222 | TCP | Inbound | This port pushes actions to client systems. |
| 5269 | TCP | Inbound and Outbound | This port pushes actions to Red Hat Proxy Server. |
| 5432 | TCP | Inbound and Outbound | This is a requirement for communication with a PostgreSQL database server if using an External Database or Managed Database. |
Open your firewall to the following hosts for access to Red Hat's Content Delivery Network (CDN):
rhn.redhat.comxmlrpc.rhn.redhat.comsatellite.rhn.redhat.comcontent-xmlrpc.rhn.redhat.comcontent-web.rhn.redhat.comcontent-satellite.rhn.redhat.com
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