Rdr pass on en0 inet proto tcp from any to any port 80 -> 127.0.0.1 port 9191 Rdr pass on lo0 inet proto tcp from any to self port 80 -> 127.0.0.1 port 9191 Modify the /etc/pf.anchors/com.papercut file by adding the following lines: Mac OS X 10.10įrom Mac OS X 10.10, you must use the pfctl command to modify the Mac firewall. For Mac OS X 10.10 and later, the support for the IPFW firewall has been removed in favor of PF. The following information works for Mac OS X 10.10. With the release of Mac OS X 10.11 (El Capitan) and the inclusion of System Integrity Protection (SIP) modifications to /System/ are disabled by default and disabling this feature is not recommended. The approach on Mac systems is similar to Linux. (See Stop and start the Application Server). When you are done, restart the Application Server. (These commands would typically be placed in an rc init script or the iptables startup config script as provided by your distribution.) p tcp -dport 443 -j REDIRECT -to-ports 9192 p tcp -dport 80 -j REDIRECT -to-ports 9191 sbin/iptables -t nat -I PREROUTING -src 0/0 -dst \ Consult your distribution’s documentation to see how to persist the iptables rules between system restarts: The following commands provide an example. To enable port 80 and 443, use iptables (or ipchains on old systems) to port-forward 80 to 9191. In line with security best practice PaperCut runs as a non-privileged user. On Linux systems, only privileged programs that run as root can use ports under 1024. Test and ensure the web interface is working. An alternate option is to use kernel level TCP port redirection (e.g. Some systems prevent non-root users from binding to ports lower than 1024. On Linux/Unix systems, the server runs under the privilege of a non-root account. In this example, the 1st line exhibits a connexion from my Mac towardġ7.172.233.109, which a further: whois 17. the client is installed locally on workstations, then change the config file on each workstation. To see both servers listening, and connections already established in both directions. …without any added filtering, so as to get the correct headers, and Tcp4 0 0 localhost.773 localhost.63173 ESTABLISHED Tcp4 0 0 localhost.63173 localhost.773 ESTABLISHED Tcp4 87 0 my_iMac_at_home.63429 .http ESTABLISHED Tcp4 58 0 my_iMac_at_home.63452 .http ESTABLISHED Tcp4 116 0 my_iMac_at_home.55478 .http ESTABLISHED Tcp4 87 0 my_iMac_at_home.55481 .http ESTABLISHED Proto Recv-Q Send-Q Local Address Foreign Address (state) The simplest method is to use netstat: $ netstat -ap tcpĪctive Internet connections (including servers) pid: 71 name: /Applications/Pritunl.app/Contents/Resources/pritunl-service Proto: tcp4 addr.port: *.58640 pid: 320 name: /usr/libexec/rapportd Proto: tcp6 addr.port: *.58640 pid: 320 name: /usr/libexec/rapportd pid: 67931 name: /Applications/electerm.app/Contents/Frameworks/electerm Helper.app/Contents/MacOS/electerm Helper pid: 70043 name: /Applications/IntelliJ IDEA.app/Contents/jdk/Contents/Home/jre/bin/java Proto: tcp4 addr.port: 127.0.2 pid: 70043 name: /Applications/IntelliJ IDEA.app/Contents/jdk/Contents/Home/jre/bin/java Proto: tcp4 addr.port: 127.0.3 pid: 70043 name: /Applications/IntelliJ IDEA.app/Contents/jdk/Contents/Home/jre/bin/java Proto: tcp4 addr.port: 127.0.9 pid: 70065 name: /Applications/IntelliJ IDEA.app/Contents/jdk/Contents/Home/jre/bin/java Proto: tcp46 addr.port: *.61992 pid: 70065 name: /Applications/IntelliJ IDEA.app/Contents/jdk/Contents/Home/jre/bin/java Proto: tcp4 addr.port: *.61993 pid: 70043 name: /Applications/IntelliJ IDEA.app/Contents/MacOS/idea Proto: tcp46 addr.port: *.62085 pid: 70078 name: /Library/Java/JavaVirtualMachines/jdk1.8.0_162.jdk/Contents/Home/bin/java Proto: tcp46 addr.port: *.62070 pid: 70078 name: /Library/Java/JavaVirtualMachines/jdk1.8.0_162.jdk/Contents/Home/bin/java Proto: tcp46 addr.port: *.62087 pid: 70078 name: /Library/Java/JavaVirtualMachines/jdk1.8.0_162.jdk/Contents/Home/bin/java Proto: tcp46 addr.port: *.35729 pid: 70078 name: /Library/Java/JavaVirtualMachines/jdk1.8.0_162.jdk/Contents/Home/bin/java pid: 70078 name: /Library/Java/JavaVirtualMachines/jdk1.8.0_162.jdk/Contents/Home/bin/java It'd be interesting to see other opportunities to make this nicer/slimmer. I have a small collection of these convenience functions in a file that I source from ~/.bash_profile, or ~/.zshrc. So, this is what I quick put together: netstat -Watnlv | grep LISTEN | awk '' | column -t -s "|" I read other questions/answers offering lsof* and netstat* on MacOS, and I still wanted something with more compact output. First, I'm not a BSD expert, but like the OP I wanted the rough equivalent of running the following on a *nix box, or something close: netstat -tulpn
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