Configuring the firewall for inbound connections

Configure the firewall to allow inbound connections from the service to servers in your on-premises environment.

About this task

Table 1. Firewall settings for inbound connections
Protocol	Port	Source	Target
NRPC	1352	The IBM SmartCloud® Notes® addresses generated by the outer firewall of the service. Contact your IBM® Customer Service Representative for this information.	Passthru server host names, for example: `pthru1.renovations.com pthru2.renovations.com`
NRPC	1352	Passthru server host names, for example: `pthru1.renovations.com pthru2.renovations.com`	Host names of the on-premises directory synchronization servers and mail hub servers, for example: `dirhub.renovations.com mailhub.renovations.com`
SMTP	25	The IBM SmartCloud Notes addresses generated by the outer firewall of the service. Contact your IBM Customer Service Representative for this information.	Optional SMTP host that routes mail to the Internet. The host is specified in SmartCloud Notes Administration at Account Settings > Email Management > Manage Routing to External Internet Domains.

Parent topic: Preparing the firewall