You can do a port scan on all hosts that you check or just an individual host.

您可以对所检查的所有主机、或者单个主机进行端口扫描。

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If you are connecting to a DB2 instance in the IBM Cloud, check on the port that instance is using.

如果您正在连接到IBM Cloud中的一个DB 2实例，请检查该实例正在使用的端口。

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If this does not work, check the virtual host entries in the Application server admin console and ensure that a virtual host has been defined for the Web server's SSL port.

如果不能访问，检查Application Server管理控制台中的虚拟主机条目，确保已经为Web服务器的SSL端口定义了虚拟主机。

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The incident started at about 21:30 GMT on Sunday when the 70m (230ft) tug slowed to check a problem with the tow and was struck on the port side by the Moto Vessel Emsstrom.

BBC: Stricken diesel tug reaches Portland for repairs

Or you can do tricky things like check your inventory, go through a portal and unplug your Ethernet port all at the same time, and that can cause exploitable problems.

FORBES: Magazine Article

That check gave birth to a wound clinic in conjunction with Hospital Bernard Mevs in Port-au-Prince and Project Medishare, a group started by doctors at the Miller School of Medicine.

CNN: Bright spots in Haiti's health care 3 years after quake