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# Test the firewall module.
import ./make-test.nix ( { pkgs, ... } : {
name = "firewall";
meta = with pkgs.stdenv.lib.maintainers; {
maintainers = [ eelco ];
};
nodes =
{ walled =
{ ... }:
{ networking.firewall.enable = true;
networking.firewall.logRefusedPackets = true;
services.httpd.enable = true;
services.httpd.adminAddr = "foo@example.org";
};
# Dummy configuration to check whether firewall.service will be honored
# during system activation. This only needs to be different to the
# original walled configuration so that there is a change in the service
# file.
walled2 =
{ ... }:
{ networking.firewall.enable = true;
networking.firewall.rejectPackets = true;
};
attacker =
{ ... }:
{ services.httpd.enable = true;
services.httpd.adminAddr = "foo@example.org";
networking.firewall.enable = false;
};
};
testScript = { nodes, ... }: let
newSystem = nodes.walled2.config.system.build.toplevel;
in ''
$walled->start;
$attacker->start;
$walled->waitForUnit("firewall");
$walled->waitForUnit("httpd");
$attacker->waitForUnit("network.target");
# Local connections should still work.
$walled->succeed("curl -v http://localhost/ >&2");
# Connections to the firewalled machine should fail, but ping should succeed.
$attacker->fail("curl --fail --connect-timeout 2 http://walled/ >&2");
$attacker->succeed("ping -c 1 walled >&2");
# Outgoing connections/pings should still work.
$walled->succeed("curl -v http://attacker/ >&2");
$walled->succeed("ping -c 1 attacker >&2");
# If we stop the firewall, then connections should succeed.
$walled->stopJob("firewall");
$attacker->succeed("curl -v http://walled/ >&2");
# Check whether activation of a new configuration reloads the firewall.
$walled->succeed("${newSystem}/bin/switch-to-configuration test 2>&1" .
" | grep -qF firewall.service");
'';
})
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