Oct 21, 2011 The Block all outgoing option uses an obnoxious approach to restrict connections over TCP/UDP ports. It may block all types of outgoing remote access. This includes all shared connections, applications using data from network locations, cloud services’ desktop apps, etc. Kill the process which is currently using the port using its PID. Kill PID and then check to see if the port closed. If not, try: kill -9 PID I would only do the following if the previous didnt work. Sudo kill -9 PID Just to be safe. Again depending on how you opened the port, this may not matter.
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The firewall thatis built into Mac OS X does a good job of blocking unwanted network traffic from finding its way into your Mac. But if you need a specific type of data to travel in and out of your Mac, and the firewall is blocking it, itis time to roll up your sleeves and open the port yourself.
First, a little back story on network ports. Network ports are a kind of virtual port that different types of data travel through. The data that passes through your firewall is assigned to a specific port, and each port has a unique number. For example, Web-based data, like the information that tells your Web browser how to display the sites you visit travels on port 80. Port 25 is commonly used for email.
If your firewall is blocking a specific port you need, any information traveling through that port will be blocked. Keeping with our Web data example, if port 80 is blocked, you wonit be able to view Web pages.
Now back to our regularly scheduled Quick Tip. When your Macis firewall is active, many applications that need to send data on a closed port will either ask you to manually open the port, or will open the port for you. If you need to manually open a port, hereis what to do:
Start by finding out which port you need to open. If an application asks you to manually open a firewall port, it should also give you the associated number. If not, check the applicationis documentation, or for the ambitious, you can check the IANA port number Web page. Once you have the port number, itis time to modify your firewall settings. For this example, weill assume that FileMaker Pro needs port 5003 open.
- Launch System Preferences. You can find it by selecting Apple menu > System Preferences.
- Click the Sharing.
- Click the Firewall tab.
- Click the New button in the Firewall pane.
- Choose Other from the Port Name pop-up menu.
- Enter the port number you want to open in the TCP Port Number(s) field. In our example, thatis 5003. Donit worry about the UDP Port Number(s) field.
- Enter a name that makes sense to you in the Description field. I typed 'FileMaker Pro.'
- Click OK.
Select Other to make a custom port. |
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Your new open network port. |
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This works only for firewall ports on your own Mac. If there is a network-based firewall blocking traffic, it may still prevent any information from passing out of your local network to the Internet. If you need network ports opened on a firewall thatis between your Mac and the Internet, and you arenit comfortable or authorized to make those changes, contact your IT department or favorite Mac consultant.
If you arenit sure if your Macis firewall is turned on, check out this Quick Tip on activating the firewall in Mac OS X.
This Quick Tip was adapted from The Designeris Guide to Mac OS X Tiger.
<!--#include virtual='/includes/newsite/series/quicktip.shtml'-->Information about these and other types of Mac ports is in the specifications for your Mac: Choose Apple menu > About This Mac, click Support, then click Specifications. Or check your Mac user guide.
Thunderbolt 3
Use Thunderbolt 3 with displays and other devices that connect using either a Thunderbolt 3 cable or USB-C cable. You can also connect a USB-C power adapter and cable to charge your notebook computer. If you have a device that doesn't connect to this port, you might be able to use an adapter to connect it.
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These Mac models have Thunderbolt 3 ports:
- MacBook Pro introduced in 2016 or later
- MacBook Air introduced in 2018 or later
- iMac introduced in 2017 or later
- iMac Pro (all models)
- Mac mini introduced in 2018
- Mac Pro introduced in 2019
If your Mac notebook or desktop computer has more than one port like this, each port supports ThunderBolt 3 and USB-C.
USB-C
Use USB-C with displays and other devices that connect using a USB-C cable. You can also connect a USB-C power adapter and cable to charge your notebook computer. If you have a device that doesn't connect to this port, you might be able to use an adapter to connect it.
MacBook models introduced in 2015 or later have a single USB-C port. This port doesn't support Thunderbolt devices.
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If your Mac has only one port like this, it's a MacBook that supports USB-C but not Thunderbolt.
Thunderbolt
Use Thunderbolt or Thunderbolt 2 with displays and other devices that connect using a Thunderbolt cable.
These Mac models have Thunderbolt or Thunderbolt 2 ports:
- MacBook Pro introduced in 2011 through 2015
- MacBook Air introduced in 2011 through 2017
- Mac mini introduced in 2011 through 2014
- iMac introduced in 2011 through 2015
- Mac Pro introduced in 2013
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Thunderbolt and Thunderbolt 2 are not the same as Mini DisplayPort . They have the same shape, but use different symbols on the cable and port. However, this port does support Mini DisplayPort for video output, so you can use a Mini DisplayPort cable to connect a Mini DisplayPort display.
Mini DisplayPort
Use Mini DisplayPort with displays that connect using a Mini DisplayPort cable.
These Mac models have Mini DisplayPort:
- MacBook Pro introduced in late 2008 through 2010
- MacBook Air introduced in late 2008 through 2010
- Mac mini introduced in 2009 and 2010
- iMac introduced in 2009 and 2010
- Mac Pro introduced in 2009 through 2012
Mini DisplayPort is not the same as Thunderbolt or Thunderbolt 2 . They have the same shape, but use different symbols on the cable and port.
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USB-A
Use USB-A with devices that connect using a USB cable. USB ports are sometimes known by the USB specification of the port, such as USB 2 or USB 3.
Left to right: power, two Thunderbolt, USB-A, and Audio-Out.
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HDMI
Use HDMI with displays and TVs that connect using an HDMI cable.
01:12 Fluid lets you create a Real Mac App (or 'Fluid App') out of any website or web application, effectively turning your favorite web apps into OS X desktop apps. Creating a Fluid App out of your favorite website is simple. Enter the website's URL, provide a name, and optionally choose an icon. Another option may be to write it as a Java app using the Eclipse Standard Widget Toolkit. This includes a browser control that embeds IE, Safari or Firefox, depending on the current platform, and generally behaves well on OS X. Mac os embedded web app. With a home hub such as an Apple TV or HomePod, securely record video to iCloud when activity by a person, animal, or vehicle is detected by your HomeKit-enabled cameras. Choose to receive notifications when clips are recorded and view them in the Home app on your Mac. In the Home app, a timeline of recordings is available to play from iCloud.
Ethernet
Use Ethernet with networks and devices that connect using an Ethernet (RJ45) cable.
FireWire
Use FireWire with devices that connect using a FireWire 400 or FireWire 800 cable.
SD card
Use the SD card slot with SD, SDHC, SDXC, MMC, and UHS-II media cards, such as those used by digital cameras.
Audio
Use Audio-Out — or — with headphones, speakers, and other audio-output devices that connect using an audio cable that has a 3.5 mm (1/8 inch) audio jack.
Use Audio-In with a microphone or other audio-input device that connects using an audio cable that has a 3.5 mm (1/8 inch) audio jack.
Power
Use the power port , if available, to connect your computer to AC power using a MagSafe cable or adapter. This port isn't available on newer Mac notebook computers, which use Thunderbolt 3 or USB-C for power and charging. Learn more about power adapters and cables for Mac notebook computers.
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