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|
Testing that zone masquerading is properly mapped to chains.
-- Testcase --
{%
include("./root/usr/share/firewall4/main.uc", {
getenv: function(varname) {
switch (varname) {
case 'ACTION':
return 'print';
}
}
})
%}
-- End --
-- File uci/helpers.json --
{}
-- End --
-- File fs/open~_sys_class_net_zone1_flags.txt --
0x1103
-- End --
-- File fs/open~_sys_class_net_zone2_flags.txt --
0x1103
-- End --
-- File fs/open~_sys_class_net_zone3_flags.txt --
0x1103
-- End --
-- File uci/firewall.json --
{
"zone": [
{
".description": "Setting masq to true should emit an IPv4 masquerading rule and inhibit default helper assignment",
"name": "test1",
"input": "ACCEPT",
"output": "ACCEPT",
"forward": "ACCEPT",
"device": "zone1",
"masq": "1"
},
{
".description": "Setting masq6 to true should emit an IPv6 masquerading rule and inhibit default helper assignment",
"name": "test2",
"input": "DROP",
"output": "DROP",
"forward": "DROP",
"device": "zone2",
"masq6": "1"
},
{
".description": "Setting both masq and masq6 should emit IPv4 and IPv6 masquerading and inhibit default helper assignment",
"name": "test3",
"input": "REJECT",
"output": "REJECT",
"forward": "REJECT",
"device": "zone3",
"masq": "1",
"masq6": "1"
}
]
}
-- End --
-- Expect stdout --
table inet fw4
flush table inet fw4
table inet fw4 {
#
# Defines
#
define test1_devices = { "zone1" }
define test1_subnets = { }
define test2_devices = { "zone2" }
define test2_subnets = { }
define test3_devices = { "zone3" }
define test3_subnets = { }
#
# 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"
iifname "zone1" jump input_test1 comment "!fw4: Handle test1 IPv4/IPv6 input traffic"
iifname "zone2" jump input_test2 comment "!fw4: Handle test2 IPv4/IPv6 input traffic"
iifname "zone3" jump input_test3 comment "!fw4: Handle test3 IPv4/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"
iifname "zone1" jump forward_test1 comment "!fw4: Handle test1 IPv4/IPv6 forward traffic"
iifname "zone2" jump forward_test2 comment "!fw4: Handle test2 IPv4/IPv6 forward traffic"
iifname "zone3" jump forward_test3 comment "!fw4: Handle test3 IPv4/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 "zone1" jump output_test1 comment "!fw4: Handle test1 IPv4/IPv6 output traffic"
oifname "zone2" jump output_test2 comment "!fw4: Handle test2 IPv4/IPv6 output traffic"
oifname "zone3" jump output_test3 comment "!fw4: Handle test3 IPv4/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_test1 {
jump accept_from_test1
}
chain output_test1 {
jump accept_to_test1
}
chain forward_test1 {
jump accept_to_test1
}
chain accept_from_test1 {
iifname "zone1" counter accept comment "!fw4: accept test1 IPv4/IPv6 traffic"
}
chain accept_to_test1 {
meta nfproto ipv4 oifname "zone1" ct state invalid counter drop comment "!fw4: Prevent NAT leakage"
oifname "zone1" counter accept comment "!fw4: accept test1 IPv4/IPv6 traffic"
}
chain input_test2 {
jump drop_from_test2
}
chain output_test2 {
jump drop_to_test2
}
chain forward_test2 {
jump drop_to_test2
}
chain drop_from_test2 {
iifname "zone2" counter drop comment "!fw4: drop test2 IPv4/IPv6 traffic"
}
chain drop_to_test2 {
oifname "zone2" counter drop comment "!fw4: drop test2 IPv4/IPv6 traffic"
}
chain input_test3 {
jump reject_from_test3
}
chain output_test3 {
jump reject_to_test3
}
chain forward_test3 {
jump reject_to_test3
}
chain reject_from_test3 {
iifname "zone3" counter jump handle_reject comment "!fw4: reject test3 IPv4/IPv6 traffic"
}
chain reject_to_test3 {
oifname "zone3" counter jump handle_reject comment "!fw4: reject test3 IPv4/IPv6 traffic"
}
#
# NAT rules
#
chain dstnat {
type nat hook prerouting priority dstnat; policy accept;
}
chain srcnat {
type nat hook postrouting priority srcnat; policy accept;
oifname "zone1" jump srcnat_test1 comment "!fw4: Handle test1 IPv4/IPv6 srcnat traffic"
oifname "zone2" jump srcnat_test2 comment "!fw4: Handle test2 IPv4/IPv6 srcnat traffic"
oifname "zone3" jump srcnat_test3 comment "!fw4: Handle test3 IPv4/IPv6 srcnat traffic"
}
chain srcnat_test1 {
meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 test1 traffic"
}
chain srcnat_test2 {
meta nfproto ipv6 masquerade comment "!fw4: Masquerade IPv6 test2 traffic"
}
chain srcnat_test3 {
meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 test3 traffic"
meta nfproto ipv6 masquerade comment "!fw4: Masquerade IPv6 test3 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 --
|
