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From: Stefan Hanreich <s.hanreich@proxmox.com>
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Subject: [pve-devel] [PATCH pve-firewall v4 3/5] add configuration option
for new nftables firewall
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Introduces new nftables configuration option that en/disables the new
nftables firewall.
pve-firewall reads this option and only generates iptables rules when
nftables is set to `0` or if the proxmox-firewall package is not
installed at all. Conversely, proxmox-firewall only generates rules
when the option is set to `1`.
Signed-off-by: Stefan Hanreich <s.hanreich@proxmox.com>
---
This looks a bit awkward, but I wanted to avoid having to re-parse the
configuration when calling from pve-firewall but also avoid having to
load the config manually when calling from qemu-server / pve-container
src/PVE/Firewall.pm | 41 ++++++++++++++++++++++++++++++++---------
1 file changed, 32 insertions(+), 9 deletions(-)
diff --git a/src/PVE/Firewall.pm b/src/PVE/Firewall.pm
index 81a8798..21eb5fc 100644
--- a/src/PVE/Firewall.pm
+++ b/src/PVE/Firewall.pm
@@ -1408,6 +1408,12 @@ our $host_option_properties = {
default => 0,
optional => 1
},
+ nftables => {
+ description => "Enable nftables based firewall",
+ type => 'boolean',
+ default => 0,
+ optional => 1,
+ },
};
our $vm_option_properties = {
@@ -2929,7 +2935,7 @@ sub parse_hostfw_option {
my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
- if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid|protection_synflood):\s*(0|1)\s*$/i) {
+ if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid|protection_synflood|nftables):\s*(0|1)\s*$/i) {
$opt = lc($1);
$value = int($2);
} elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
@@ -4673,12 +4679,30 @@ sub remove_pvefw_chains_ebtables {
ebtables_restore_cmdlist(get_ebtables_cmdlist({}));
}
-sub init {
- my $cluster_conf = load_clusterfw_conf();
- my $cluster_options = $cluster_conf->{options};
- my $enable = $cluster_options->{enable};
+sub is_nftables {
+ my ($cluster_conf, $host_conf) = @_;
+
+ if (!-x "/usr/libexec/proxmox/proxmox-firewall") {
+ return 0;
+ }
+
+ $cluster_conf = load_clusterfw_conf() if !defined($cluster_conf);
+ $host_conf = load_hostfw_conf($cluster_conf) if !defined($host_conf);
- return if !$enable;
+ return $host_conf->{options}->{nftables};
+}
+
+sub is_enabled {
+ my ($cluster_conf, $host_conf) = @_;
+
+ $cluster_conf = load_clusterfw_conf() if !defined($cluster_conf);
+ $host_conf = load_hostfw_conf($cluster_conf) if !defined($host_conf);
+
+ return $cluster_conf->{options}->{enable} && !is_nftables($cluster_conf, $host_conf);
+}
+
+sub init {
+ return if !is_enabled();
# load required modules here
}
@@ -4687,14 +4711,13 @@ sub update {
my $code = sub {
my $cluster_conf = load_clusterfw_conf();
- my $cluster_options = $cluster_conf->{options};
+ my $hostfw_conf = load_hostfw_conf($cluster_conf);
- if (!$cluster_options->{enable}) {
+ if (!is_enabled($cluster_conf, $hostfw_conf)) {
PVE::Firewall::remove_pvefw_chains();
return;
}
- my $hostfw_conf = load_hostfw_conf($cluster_conf);
my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = compile($cluster_conf, $hostfw_conf);
--
2.39.2
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