Mac OS X comes with a built in firewall that keeps your computer safe, but some apps and services require you to open ports in your firewall.
The firewall may be set to block incoming ICMP "pings" by enabling Stealth Mode in Advanced Settings.
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From the command line you have a variety of methods to read and watch the firewall log in OS X. In Leopard (10.5) and on, there is a new feature to add a trusted application to a list.
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Murus is a commercial application. It is not free in all ways (though it's $0 at the free edition) and, having tried it, I can not recommend it for the purpose that the TO is asking for. This is a command line tutorial primarily conducted in in the OS X command line. This site is not affiliated with or endorsed by Apple Inc. in any way. Reproduction without explicit permission is prohibited.This website and third-party tools use cookies for functional, analytical, and advertising purposes. This context also provides functionality for more precise control of firewall rules. Learn more about Stack Overflow the company
To use the systemsetup command with either the -setremotelogin or -setremoteappleevents flag in macOS Catalina 10.15 or later, first give the parent process full-disk-access.
Because of OSX’s unix heritage, much of the info here is also useful in other unix inspired systems, like the Linux command line. It only takes a minute to sign up.I have decided to add a firewall to my computer and have heard of applications such as 'Little Snitch' which help to give me control of inbound and outbound connections on my mac running macOS Sierra.
Little Snitch is an application firewall, that's a whole different story.
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The default firewall is also an option, however, I would like to determine the ports myself and preferably the server address that is sending or receiving data from my computer like little snitch allows.Assuming you want to block ports and servers, just configure If you want to have a GUI after all, you might want to check out the (free) To determine the ports yourself and preferably the server address that is sending or receiving data from your computer use the build in command "nettop".To subscribe to this RSS feed, copy and paste this URL into your RSS reader.
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I was using ipfw which is insanely simple, but it’s been deprecated and I can’t seem to get pf to work correctly. All Rights Reserved. Learn more about hiring developers or posting ads with us
10.5: Control the firewall from the command line Authored by: kirkmc on Jan 14, '08 07:50:10AM I'm sure you need to do something after running that command to get the firewall to read the plist file. Stack Exchange network consists of 177 Q&A communities including
Watching Firewall Logs from the Command Line. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under
There is, and it comes with macOS by default. But feel free to check out Murus if you like.Murus Lite is also free and from the same developer as IceFloor (Hany)It is free in the sense of $0, it is not free in the sense of free software ( Start here for a quick overview of the site
Earlier ipfw technology is still accessible from the command line (in Terminal) and the application firewall does not overrule any rules set using ipfw.
Assuming you want to block ports and servers, just configure pf from the command line to do what you want. Since bandwith throttling is not an issue, Icefloor will do just fine on current systems. The best answers are voted up and rise to the top
I did this once, but it proved too fiddly to continue doing, so I stopped.All trademarks and copyrights on this website are property of their respective owners.© 2020 OS X Daily.
If you simply want to view the existing log as is and not when it updates with new connection data, you can use cat or more in Terminal app: If ipfw blocks an incoming packet, the application firewall does not process it. You need to edit the syslogd plist by hand and restart.
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