Greg Wooledge (12023-06-25): > I think most of the time, this is not done as a systemd service at > all. It's usually invoked from the "up" hook when your network interface > is brought up, assuming you use /etc/network/interfaces. If you use > NetworkManager, then I don't know. > > Check interfaces(5) and look for "up", "post-up" and "pre-down".
Linux's firewall is designed so that it can be configured before the interfaces are up, or even exist. Without that, there would be a short time with the interface up but no firewall. Regards, -- Nicolas George
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