Install on Linux
- Compatibility Reports
- Manual Install and Launching
- Security-Enhanced Linux (SELinux)
- Desktop Entry
- Arch Linux
This page covers how to install and uninstall the Portmaster on Linux.
We provide package installers for supported systems:
Please note that we only support the latest stable and LTS versions. We may be able to help out with other systems, but will not be able to invest a lot of time in order to keep focus.
The installers should take care of any needed dependencies. Please report back if they do not!
Please note that the Portmaster updates itself and that the provided packages are only meant for an initial install. Uninstalling the package from your system will properly uninstall and remove the Portmaster.
Help make the Portmaster better for everyone by reporting your experience on different Linux distros.
|Linux Kernel||>= 5.7||🟢 confirmed compatible|
|5.6||🟡 issue reported||#82|
|2.4-5.5||🟢 confirmed compatible|
|NixOS||21.05||🟡 issue reported||#306|
|Budgie||?||🟡 issue reported||#111|
|Cinnamon||4.6.7||🟢 reported compatible||#297|
|Deepin DE||request for report|
|Gnome||3.38||🟢 confirmed compatible|
|>= 3||🟢 estimated compatible|
|KDE Plasma||5.18||🟢 reported compatible||#324|
|LXDE||request for report|
|LXQt||request for report|
|MATE||request for report|
|XFCE||?||🟢 confirmed compatible|
The Portmaster Core Service is compatible with the Linux Kernel as of version 2.4, but due to a breaking bug in at least v5.6, we recommend to use v5.7+.
libnetfilter_queue- for network stack integration
libappindicator3- for sending desktop notifications (optional, but recommended)
- Network Manager - for better integration (optional, but recommended)
sudo apt install libnetfilter-queue1 libappindicator3-1
You may need to enable the universe or multiverse repositories sources on Ubuntu.
sudo yum install libnetfilter_queue
sudo pacman -S libnetfilter_queue libappindicator-gtk3
0. Install dependencies.
1. Download the latest
portmaster-start utility and initialize all resources:
# Create portmaster data dir mkdir -p /var/lib/portmaster # Download portmaster-start utility wget -O /tmp/portmaster-start https://updates.safing.io/latest/linux_amd64/start/portmaster-start sudo mv /tmp/portmaster-start /var/lib/portmaster/portmaster-start sudo chmod a+x /var/lib/portmaster/portmaster-start # Download resources sudo /var/lib/portmaster/portmaster-start --data /var/lib/portmaster update
All data is saved in
portmaster-start utility always needs to know where this data directory is.
2. Start the Portmaster Core Service
sudo /var/lib/portmaster/portmaster-start core
3. Start the Portmaster UI
4. Start the Portmaster Notifier
Your Desktop environment may not (yet) be compatible.
5. Start it on boot
In order to get the Portmaster Core Service to automatically start when booting, you need to create a systemd service unit at
The following unit file works but excludes most of the security relevant settings. For a more restricted version use this portmaster.service file.
[Unit] Description=Portmaster Privacy App [Service] Type=simple ExecStart=/var/lib/portmaster/portmaster-start core --data=/var/lib/portmaster/ ExecStopPost=-/sbin/iptables -F C17 ExecStopPost=-/sbin/iptables -t mangle -F C170 ExecStopPost=-/sbin/iptables -t mangle -F C171 ExecStopPost=-/sbin/ip6tables -F C17 ExecStopPost=-/sbin/ip6tables -t mangle -F C170 ExecStopPost=-/sbin/ip6tables -t mangle -F C171 [Install] WantedBy=multi-user.target
Finally, reload the systemd daemon and enable/start the Portmaster:
sudo systemctl daemon-reload sudo systemctl enable --now portmaster
If you are running with
SELINUX=enforcing you probably were not successful with running the Portmaster and might see the following error in your
journalctl -u portmaster:
dub 16 22:09:10 dev-fedora systemd: Started Portmaster Privacy App. dub 16 22:09:10 dev-fedora systemd: portmaster.service: Failed to execute command: Permission denied dub 16 22:09:10 dev-fedora systemd: portmaster.service: Failed at step EXEC spawning /var/lib/portmaster/portmaster-start: Permission denied dub 16 22:09:10 dev-fedora systemd: portmaster.service: Main process exited, code=exited, status=203/EXEC
This happens because SELinux will not allow you to run a binary from
/var/lib/portmaster as systemd service. For this to work you need to change the SELinux security context type of
portmaster-start binary using the following command:
sudo chcon -t bin_t /var/lib/portmaster/portmaster-start
Now you can restart the
portmaster service and check that the
portmaster started up successfully by running:
systemctl restart portmaster systemctl status portmaster
To find and launch the Portmaster from within your desktop environment you need to create a file with metadata which tells your system how to run the Portmaster, which icon it should display in the taskbar, etc. The easiest way to do this on other distributions is to download the latest desktop entry and png icon from the portmaster-packaging repository:
sudo wget https://raw.githubusercontent.com/safing/portmaster-packaging/master/linux/portmaster.desktop -O /usr/local/share/applications/portmaster.desktop sudo wget https://raw.githubusercontent.com/safing/portmaster-packaging/master/linux/portmaster_logo.png -O /usr/share/pixmaps/portmaster.png
Right after you download both files the Portmaster should appear in your system search with an icon.
If you still cannot see the Portmaster icon, please check whether the
portmaster-start path in the desktop entry matches the path of your installation.
For Arch users we provide a PKGBUILD file in the portmaster-packaging repository. It is not yet submitted to AUR as we want to collect some feedback first.
To install the Portmaster using the PKGBUILD, follow these steps:
# Install build-dependencies, you can remove them later: sudo pacman -S imagemagick # required to convert the Portmaster logo to different resolutions # Install runtime dependencies: sudo pacman -S libnetfilter_queue webkit2gtk # Clone the repository git clone https://github.com/safing/portmaster-packaging # Enter the repo and build/install the package (it's under linux/) cd portmaster-packaging/linux makepkg -i # Start the Portmaster and enable autostart sudo systemctl daemon-reload sudo systemctl enable --now portmaster
You can check if the Portmaster system service is actually running or if it somehow failed to start by executing the following command:
sudo systemctl status portmaster
This should show something like
active (running) since <start-time>. Please also check if the start time seems reasonable. If it seems strange, try looking at the logs.
If you encounter any issues you might want to (temporarily) stop the Portmaster. You can do this like this:
# This will stop the portmaster until you reboot. sudo systemctl stop portmaster # This will disable automatically starting the Portmaster on boot. sudo systemctl disable portmaster
When debugging or troubleshooting issues it is always a good idea to increase the debug output by adjusting the Log Level .
Portmaster logs can either be viewed using the system journal or by browsing the log files in
In most cases, the interesting log files will be in the
# View logs of the Portmaster using the system journal. sudo journalctl -u portmaster # You can also specify a time-range for viewing. sudo journalctl -u portmaster --since "10 minutes ago"
Due to the Portmaster being an Application Firewall it needs to deeply integrate with the networking stack of your operating system. That means that “no network connectivity” might be caused at different points during connection handling. The following steps will help you to figure out where the actual issue comes from. Please include any output of the below commands in any related issues as it is very valuable in debugging your problem.
2. Test Direct Network Connectivity
The Portmaster includes a local DNS resolver to provide its monitoring and some filtering capabilities. In order to track down the issue, connect directly to an IP address. Should this work, this would indicate that there is a problem with the Portmaster’s DNS resolver.
# Check if a ping message succeeds. # The Portmaster currently always allows ping messages. ping 22.214.171.124 # Check if an HTTP request succeeds. # In case of an error, look for "curl" in the network monitor of the Portmaster. curl -I 126.96.36.199 # Or use wget to check if an HTTP request succeeds. # In case of an error, look for "wget" in the network monitor of the Portmaster. wget -S -O /dev/null 188.8.131.52
3. Test DNS Resolving
If the above step works the issue most likely resides somewhere at the DNS resolving level. To confirm, please try the following:
# Check if a DNS requests suceeds. # In case of an error, look for "dig" in the network monitor of the Portmaster. dig one.one.one.one dig wikipedia.org # Or use nslookup to check if a DNS requests suceeds. # In case of an error, look for "nslookup" in the network monitor of the Portmaster. nslookup one.one.one.one nslookup wikipedia.org
In case of a rapid unscheduled shutdown, the Portmaster may sometimes fail to cleanup its iptables rules and thus break networking. To work around this either use the recommended systemd service unit included in our installers or execute the following commands:
sudo /var/lib/portmaster/portmaster-start recover-iptables
Uninstalling the portmaster package from your system will properly uninstall and remove the Portmaster.
Most distros will have a graphical software and package manager.
You can easily find it by opening the “Start Menu” and searching for “software”.
sudo apt purge portmaster
sudo pacman -Rnsu portmaster