But there is also ipfw, a packet filtering firewall like netfilter/iptables on GNU/Linux and pf (FreeBSD/OpenBSD). You can either configure ipfw using the command line, or using a graphical front-end like the free/libre WaterRoof. You could start with an ipfw command like: sudo ipfw add 31010 allow tcp from any to any dst-port 8080. How to enable and configure the firewall on your Mac running macOS Sierra Download 'CleanMyMac' to cleanup and speed up your Mac - http://bit.ly/CleanMyMacX2.
The tools to automate OS X firewall events from the command line are still stored in /usr/libexec/ApplicationFirewall. And you will still use socketfilterfw there for much of the heavy lifting. However, now there are much more helpful and functional options in socketfilterfw that will allow you to more easily script the firewall. Some tricks I’ve picked up with the Mac Firewall/alf scripting:
/usr/libexec/ApplicationFirewall/socketfilterfw --setblockall on To see if block all is enabled:
Allow App Through Firewall Blocked/usr/libexec/ApplicationFirewall/socketfilterfw --getblockall The output would be as follows, if successful: Firewall is set to block all non-essential incoming connections A couple of global options that can be set. Stealth Mode: /usr/libexec/ApplicationFirewall/socketfilterfw --setstealthmode on To check if stealth mode is enabled: /usr/libexec/ApplicationFirewall/socketfilterfw --getstealthmode Firewall logging: /usr/libexec/ApplicationFirewall/socketfilterfw --setloggingmode on You can also control the verbosity of logs, using throttled, brief or detail. For example, if you need to troubleshoot some issues, you might set the logging to detail using the following command: /usr/libexec/ApplicationFirewall/socketfilterfw --setloggingopt: detail To start the firewall: /usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate on While it would be nice to think that that was going to be everything for everyone, it just so happens that some environments actually need to allow traffic. Therefore, traffic can be allowed per signed binary. To allow signed applications: /usr/libexec/ApplicationFirewall/socketfilterfw --setallowsigned on To check if you allow signed apps: /usr/libexec/ApplicationFirewall/socketfilterfw --getallowsigned This will allow all TRUSTEDAPPS. The –listapps option shows the status of each filtered application: /usr/libexec/ApplicationFirewall/socketfilterfw --listapps To check if an app is blocked: /usr/libexec/ApplicationFirewall/socketfilterfw –getappblocked /Applications/MyApp.app/Contents/MacOS/myapp This shows the number of exceptions, explicitly allowed apps and signed exceptions as well as process names and allowed app statuses. There is also a list of TRUSTEDAPPS, which will initially be populated by Apple tools with sharing capabilities (e.g. httpd & smbd). If you are enabling the firewall using a script, first sign your applications that need to allow sharing but are not in the TRUSTEDAPPS section by using the -s option along with the application binary (not the .app bundle): /usr/libexec/ApplicationFirewall/socketfilterfw -s /Applications/MyApp.app/Contents/MacOS/myapp Once signed, verify the signature: /usr/libexec/ApplicationFirewall/socketfilterfw -v /Applications/MyApp.app/Contents/MacOS/myapp Once signed, trust the application using the –add option: /usr/libexec/ApplicationFirewall/socketfilterfw --add /Applications/MyApp.app/Contents/MacOS/myapp To see a list of trusted applications. You can do so by using the -l option as follows (the output is pretty ugly and needs to be parsed better): /usr/libexec/ApplicationFirewall/socketfilterfw -l If, in the course of your testing, you determine the firewall just isn’t for you, disable it:
![]() /usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate off To sanity check whether it’s started:
Allow App Through Firewall Mac Os Catalina/usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate
Allow An App Through Windows FirewallOr to manually stop it using launchctl (should start again with a reboot):launchctl unload /System/Library/LaunchAgents/com.apple.alf.useragent.plist launchctl unload /System/Library/LaunchDaemons/com.apple.alf.agent.plist
Allow App Through Firewall Mac Os 10.13If you disable the firewalll using launchctl, you may need to restart services for them to work again.Comments are closed.
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