flowtable ft {
hook ingress priority 0;
devices = { "eth0", "eth1" };
+ counter;
flags offload;
}
+
#
# CT helper definitions
#
}
- #
- # Set definitions
- #
-
-
#
# Defines
#
define lan_devices = { "br-lan" }
define lan_subnets = { 10.0.0.0/24, 192.168.26.0/24, 2001:db8:1000::/60, fd63:e2f:f706::/60 }
+
define wan_devices = { "pppoe-wan" }
define wan_subnets = { 10.11.12.0/24, 2001:db8:54:321::/64 }
+
#
# User includes
#
#
chain input {
- type filter hook input priority filter; policy accept;
+ type filter hook input priority filter; policy drop;
iifname "lo" accept comment "!fw4: Accept traffic from loopback"
tcp flags & (fin | syn | rst | ack) == syn jump syn_flood comment "!fw4: Rate limit TCP syn packets"
iifname "br-lan" jump input_lan comment "!fw4: Handle lan IPv4/IPv6 input traffic"
iifname "pppoe-wan" jump input_wan comment "!fw4: Handle wan IPv4/IPv6 input traffic"
+ jump handle_reject
}
chain forward {
chain prerouting {
type filter hook prerouting priority filter; policy accept;
- iifname "br-lan" jump helper_lan comment "!fw4: lan IPv4/IPv6 CT helper assignment"
+ iifname "br-lan" jump helper_lan comment "!fw4: Handle lan IPv4/IPv6 helper assignment"
}
chain handle_reject {
}
chain accept_to_wan {
+ meta nfproto ipv4 oifname "pppoe-wan" ct state invalid counter drop comment "!fw4: Prevent NAT leakage"
oifname "pppoe-wan" counter accept comment "!fw4: accept wan IPv4/IPv6 traffic"
}
[!] Section @defaults[0] specifies unknown option 'unknown_defaults_option'
[!] Section @rule[9] (Test-Deprecated-Rule-Option) option '_name' is deprecated by fw4
[!] Section @rule[9] (Test-Deprecated-Rule-Option) specifies unknown option 'unknown_rule_option'
+[call] fs.glob pattern </usr/share/nftables.d/ruleset-pre/*.nft>
+[call] fs.glob pattern </usr/share/nftables.d/ruleset-post/*.nft>
+[call] fs.glob pattern </usr/share/nftables.d/table-pre/*.nft>
+[call] fs.glob pattern </usr/share/nftables.d/table-post/*.nft>
+[call] fs.lsdir path </usr/share/nftables.d/chain-pre>
+[call] fs.lsdir path </usr/share/nftables.d/chain-post>
[call] ctx.call object <network.device> method <status> args <null>
[call] fs.opendir path </sys/class/net/br-lan>
[call] fs.opendir path </sys/class/net/eth0>
}
' 2>/dev/null> timeout <null>
[call] fs.popen cmdline </usr/sbin/nft --terse --json list flowtables inet> mode <r>
-[call] fs.open path </sys/class/net/br-lan/flags> mode <r>
-[call] fs.open path </sys/class/net/br-lan/flags> mode <r>
+[call] fs.readfile path </sys/class/net/br-lan/flags> limit <null>
+[call] fs.readfile path </sys/class/net/br-lan/flags> limit <null>
-- End --