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|
Test that configured zone log limits are honored in emitted log rules.
-- Testcase --
{%
include("./root/usr/share/firewall4/main.uc", {
getenv: function(varname) {
switch (varname) {
case 'ACTION':
return 'print';
}
}
})
%}
-- End --
-- File uci/firewall.json --
{
"zone": [
{
".description": "test zone with log_limit",
"name": "lan",
"network": "lan",
"auto_helper": 0,
"log": 3,
"log_limit": "1/min"
},
{
".description": "test zone with MASQ and log_limit",
"name": "wan",
"network": "wan",
"auto_helper": 0,
"family": "ipv4",
"masq": 1,
"log": 3,
"log_limit": "2/min"
},
{
".description": "test zone with log_limit and no log",
"name": "guest",
"network": "guest",
"auto_helper": 0,
"log_limit": "3/min"
},
{
".description": "test zone with log and no limit, should produce multi target rules",
"name": "wan6",
"network": "wan6",
"auto_helper": 0,
"family": "ipv6",
"log": 1
}
],
"forwarding": [
{
"src": "lan",
"dest": "wan"
}
],
"rule": [
{
".description": "src lan log",
"proto": "tcp",
"src": "lan",
"dest_port": 1001,
"log": 1
},
{
".description": "src lan no log",
"proto": "tcp",
"src": "lan",
"dest_port": 1002,
"log": 0
},
{
".description": "dest lan log",
"proto": "tcp",
"dest": "lan",
"dest_port": 1003,
"log": 1
},
{
".description": "dest lan no log",
"proto": "tcp",
"dest": "lan",
"dest_port": 1004,
"log": 0
},
{
".description": "Source any, dest lan, log",
"proto": "tcp",
"src": "*",
"dest": "lan",
"dest_port": 1005,
"log": 1
},
{
".description": "Source any, dest lan, no log",
"proto": "tcp",
"src": "*",
"dest": "lan",
"dest_port": 1006,
"log": 0
},
{
".description": "src any log",
"proto": "tcp",
"src": "*",
"dest_port": 1007,
"log": 1
},
{
".description": "src any no log",
"proto": "tcp",
"src": "*",
"dest_port": 1008,
"log": 0
},
{
"name": "Deny guest with no log",
"proto": "icmp",
"dest": "guest",
"target": "drop"
},
{
"name": "Deny guest with log",
"proto": "icmp",
"dest": "guest",
"target": "drop",
"log": 1
},
{
"name": "Deny rule #1",
"proto": "any",
"src": "lan",
"dest": "wan",
"src_ip": [ "192.168.1.2" ],
"target": "drop"
},
{
"name": "Deny rule #2",
"proto": "icmp",
"src": "lan",
"dest": "wan",
"src_ip": [ "192.168.1.3" ],
"target": "drop"
},
{
".description": "src any log",
"proto": "tcp",
"src": "*",
"dest_port": 1009,
"log": 1,
"log_limit": "5/min"
}
],
"redirect": [
{
"proto": "tcp",
"src": "wan",
"dest": "lan",
"dest_ip": "10.0.0.2",
"dest_port": "22",
"log": "1"
},
{
"proto": "tcp",
"src": "wan",
"dest": "lan",
"dest_ip": "10.0.0.2",
"dest_port": "23",
"log": "1",
"log_limit": "4/min"
}
]
}
-- End --
-- File uci/helpers.json --
{}
-- End --
-- Expect stdout --
table inet fw4
flush table inet fw4
table inet fw4 {
#
# 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 }
define guest_devices = { "br-guest" }
define guest_subnets = { 10.1.0.0/24, 192.168.27.0/24, 2001:db8:1000::/60, fd63:e2f:f706::/60 }
define wan6_devices = { "pppoe-wan" }
define wan6_subnets = { 2001:db8:54:321::/64 }
#
# Limits
#
limit lan.log_limit {
comment "lan log limit"
rate 1/minute
}
limit wan.log_limit {
comment "wan log limit"
rate 2/minute
}
limit guest.log_limit {
comment "guest log limit"
rate 3/minute
}
#
# User includes
#
include "/etc/nftables.d/*.nft"
#
# Filter rules
#
chain input {
type filter hook input priority filter; policy drop;
iif "lo" accept comment "!fw4: Accept traffic from loopback"
ct state vmap { established : accept, related : accept } comment "!fw4: Handle inbound flows"
tcp dport 1007 counter log prefix "@rule[6]: " comment "!fw4: @rule[6]"
tcp dport 1008 counter comment "!fw4: @rule[7]"
tcp dport 1009 limit rate 5/minute log prefix "@rule[12]: "
tcp dport 1009 counter comment "!fw4: @rule[12]"
iifname "br-lan" jump input_lan comment "!fw4: Handle lan IPv4/IPv6 input traffic"
meta nfproto ipv4 iifname "pppoe-wan" jump input_wan comment "!fw4: Handle wan IPv4 input traffic"
iifname "br-guest" jump input_guest comment "!fw4: Handle guest IPv4/IPv6 input traffic"
meta nfproto ipv6 iifname "pppoe-wan" jump input_wan6 comment "!fw4: Handle wan6 IPv6 input traffic"
}
chain forward {
type filter hook forward priority filter; policy drop;
ct state vmap { established : accept, related : accept } comment "!fw4: Handle forwarded flows"
tcp dport 1005 limit name "lan.log_limit" log prefix "@rule[4]: "
tcp dport 1005 counter comment "!fw4: @rule[4]"
tcp dport 1006 counter comment "!fw4: @rule[5]"
iifname "br-lan" jump forward_lan comment "!fw4: Handle lan IPv4/IPv6 forward traffic"
meta nfproto ipv4 iifname "pppoe-wan" jump forward_wan comment "!fw4: Handle wan IPv4 forward traffic"
iifname "br-guest" jump forward_guest comment "!fw4: Handle guest IPv4/IPv6 forward traffic"
meta nfproto ipv6 iifname "pppoe-wan" jump forward_wan6 comment "!fw4: Handle wan6 IPv6 forward traffic"
}
chain output {
type filter hook output priority filter; policy drop;
oif "lo" accept comment "!fw4: Accept traffic towards loopback"
ct state vmap { established : accept, related : accept } comment "!fw4: Handle outbound flows"
oifname "br-lan" jump output_lan comment "!fw4: Handle lan IPv4/IPv6 output traffic"
meta nfproto ipv4 oifname "pppoe-wan" jump output_wan comment "!fw4: Handle wan IPv4 output traffic"
oifname "br-guest" jump output_guest comment "!fw4: Handle guest IPv4/IPv6 output traffic"
meta nfproto ipv6 oifname "pppoe-wan" jump output_wan6 comment "!fw4: Handle wan6 IPv6 output traffic"
}
chain prerouting {
type filter hook prerouting priority filter; policy accept;
}
chain handle_reject {
meta l4proto tcp reject with tcp reset comment "!fw4: Reject TCP traffic"
reject with icmpx type port-unreachable comment "!fw4: Reject any other traffic"
}
chain input_lan {
tcp dport 1001 limit name "lan.log_limit" log prefix "@rule[0]: "
tcp dport 1001 counter comment "!fw4: @rule[0]"
tcp dport 1002 counter comment "!fw4: @rule[1]"
ct status dnat accept comment "!fw4: Accept port redirections"
jump drop_from_lan
}
chain output_lan {
tcp dport 1003 limit name "lan.log_limit" log prefix "@rule[2]: "
tcp dport 1003 counter comment "!fw4: @rule[2]"
tcp dport 1004 counter comment "!fw4: @rule[3]"
jump drop_to_lan
}
chain forward_lan {
ip saddr 192.168.1.2 counter jump drop_to_wan comment "!fw4: Deny rule #1"
meta l4proto icmp ip saddr 192.168.1.3 counter jump drop_to_wan comment "!fw4: Deny rule #2"
meta nfproto ipv4 jump accept_to_wan comment "!fw4: Accept lan to wan IPv4 forwarding"
ct status dnat accept comment "!fw4: Accept port forwards"
jump drop_to_lan
limit name "lan.log_limit" log prefix "drop lan forward: "
}
chain accept_to_lan {
oifname "br-lan" counter accept comment "!fw4: accept lan IPv4/IPv6 traffic"
}
chain drop_from_lan {
iifname "br-lan" limit name "lan.log_limit" log prefix "drop lan in: "
iifname "br-lan" counter drop comment "!fw4: drop lan IPv4/IPv6 traffic"
}
chain drop_to_lan {
oifname "br-lan" limit name "lan.log_limit" log prefix "drop lan out: "
oifname "br-lan" counter drop comment "!fw4: drop lan IPv4/IPv6 traffic"
}
chain input_wan {
ct status dnat accept comment "!fw4: Accept port redirections"
jump drop_from_wan
}
chain output_wan {
jump drop_to_wan
}
chain forward_wan {
ct status dnat accept comment "!fw4: Accept port forwards"
jump drop_to_wan
limit name "wan.log_limit" log prefix "drop wan forward: "
}
chain accept_to_wan {
meta nfproto ipv4 oifname "pppoe-wan" ct state invalid limit name "wan.log_limit" log prefix "drop wan invalid ct state: "
meta nfproto ipv4 oifname "pppoe-wan" ct state invalid counter drop comment "!fw4: Prevent NAT leakage"
meta nfproto ipv4 oifname "pppoe-wan" counter accept comment "!fw4: accept wan IPv4 traffic"
}
chain drop_from_wan {
meta nfproto ipv4 iifname "pppoe-wan" limit name "wan.log_limit" log prefix "drop wan in: "
meta nfproto ipv4 iifname "pppoe-wan" counter drop comment "!fw4: drop wan IPv4 traffic"
}
chain drop_to_wan {
meta nfproto ipv4 oifname "pppoe-wan" limit name "wan.log_limit" log prefix "drop wan out: "
meta nfproto ipv4 oifname "pppoe-wan" counter drop comment "!fw4: drop wan IPv4 traffic"
}
chain input_guest {
jump drop_from_guest
}
chain output_guest {
meta l4proto { "icmp", "ipv6-icmp" } counter jump drop_to_guest comment "!fw4: Deny guest with no log"
meta l4proto { "icmp", "ipv6-icmp" } limit name "guest.log_limit" log prefix "Deny guest with log: "
meta l4proto { "icmp", "ipv6-icmp" } counter jump drop_to_guest comment "!fw4: Deny guest with log"
jump drop_to_guest
}
chain forward_guest {
jump drop_to_guest
}
chain drop_from_guest {
iifname "br-guest" counter drop comment "!fw4: drop guest IPv4/IPv6 traffic"
}
chain drop_to_guest {
oifname "br-guest" counter drop comment "!fw4: drop guest IPv4/IPv6 traffic"
}
chain input_wan6 {
jump drop_from_wan6
}
chain output_wan6 {
jump drop_to_wan6
}
chain forward_wan6 {
jump drop_to_wan6
log prefix "drop wan6 forward: "
}
chain drop_from_wan6 {
meta nfproto ipv6 iifname "pppoe-wan" counter log prefix "drop wan6 in: " drop comment "!fw4: drop wan6 IPv6 traffic"
}
chain drop_to_wan6 {
meta nfproto ipv6 oifname "pppoe-wan" counter log prefix "drop wan6 out: " drop comment "!fw4: drop wan6 IPv6 traffic"
}
#
# NAT rules
#
chain dstnat {
type nat hook prerouting priority dstnat; policy accept;
iifname "br-lan" jump dstnat_lan comment "!fw4: Handle lan IPv4/IPv6 dstnat traffic"
meta nfproto ipv4 iifname "pppoe-wan" jump dstnat_wan comment "!fw4: Handle wan IPv4 dstnat traffic"
}
chain srcnat {
type nat hook postrouting priority srcnat; policy accept;
oifname "br-lan" jump srcnat_lan comment "!fw4: Handle lan IPv4/IPv6 srcnat traffic"
meta nfproto ipv4 oifname "pppoe-wan" jump srcnat_wan comment "!fw4: Handle wan IPv4 srcnat traffic"
}
chain dstnat_lan {
ip saddr { 10.0.0.0/24, 192.168.26.0/24 } ip daddr 10.11.12.194 dnat 10.0.0.2:22 comment "!fw4: @redirect[0] (reflection)"
ip saddr { 10.0.0.0/24, 192.168.26.0/24 } ip daddr 10.11.12.194 dnat 10.0.0.2:23 comment "!fw4: @redirect[1] (reflection)"
}
chain srcnat_lan {
ip saddr { 10.0.0.0/24, 192.168.26.0/24 } ip daddr 10.0.0.2 tcp dport 22 snat 10.0.0.1 comment "!fw4: @redirect[0] (reflection)"
ip saddr { 10.0.0.0/24, 192.168.26.0/24 } ip daddr 10.0.0.2 tcp dport 23 snat 10.0.0.1 comment "!fw4: @redirect[1] (reflection)"
}
chain dstnat_wan {
meta nfproto ipv4 limit name "wan.log_limit" log prefix "@redirect[0]: "
meta nfproto ipv4 counter dnat 10.0.0.2:22 comment "!fw4: @redirect[0]"
meta nfproto ipv4 limit rate 4/minute log prefix "@redirect[1]: "
meta nfproto ipv4 counter dnat 10.0.0.2:23 comment "!fw4: @redirect[1]"
}
chain srcnat_wan {
meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 wan traffic"
}
#
# Raw rules (notrack)
#
chain raw_prerouting {
type filter hook prerouting priority raw; policy accept;
}
chain raw_output {
type filter hook output priority raw; policy accept;
}
#
# Mangle rules
#
chain mangle_prerouting {
type filter hook prerouting priority mangle; policy accept;
}
chain mangle_postrouting {
type filter hook postrouting priority mangle; policy accept;
}
chain mangle_input {
type filter hook input priority mangle; policy accept;
}
chain mangle_output {
type route hook output priority mangle; policy accept;
}
chain mangle_forward {
type filter hook forward priority mangle; policy accept;
}
}
-- End --
|
