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|
Test various address selection rules in redirect rules.
-- Testcase --
{%
include("./root/usr/share/firewall4/main.uc", {
getenv: function(varname) {
switch (varname) {
case 'ACTION':
return 'print';
}
}
})
%}
-- End --
-- File uci/helpers.json --
{}
-- End --
-- File uci/firewall.json --
{
"zone": [
{
"name": "wan",
"network": [ "wan", "wan6" ],
"masq": 1,
"masq6": 1
},
{
"name": "lan",
"network": "lan",
"auto_helper": 0
},
{
"name": "noaddr",
"network": [ "noaddr" ],
"masq": 1,
"masq6": 1
}
],
"redirect": [
{
".description": "Ensure unspecified family with no src, dest or rewrite address is treated as IPv4 only",
"name": "Redirect test #1",
"src": "lan",
"dest": "wan",
"proto": "udp",
"src_dport": "53",
"dest_port": "53",
"target": "dnat"
},
{
".description": "Ensure that explicit family any with no src, dest or rewrite address is treated as IPv4/IPv6",
"name": "Redirect test #2",
"family": "any",
"src": "lan",
"dest": "wan",
"proto": "udp",
"src_dport": "53",
"dest_port": "53",
"target": "dnat"
},
{
".description": "Ensure that a DNAT without explicit dest zone infers the zone from the rewrite address",
"name": "Redirect test #3",
"src": "wan",
"proto": "tcp",
"src_dport": "22",
"dest_ip": "192.168.26.100"
},
{
".description": "Ensure that external reflection source uses the src zone addr as reflection source IP",
"name": "Redirect test #4",
"src": "wan",
"proto": "tcp",
"src_dport": "23",
"dest_ip": "192.168.26.100",
"reflection_src": "external"
},
{
".description": "Ensure that reflection is disabled if external address cannot be determined",
"name": "Redirect test #5",
"src": "noaddr",
"dest": "lan",
"proto": "tcp",
"src_dport": "24",
"dest_ip": "192.168.26.100"
},
{
".description": "Ensure that the rewrite IPv6 address is using bracket notation when a port is specified",
"name": "Redirect test #6",
"family": "ipv6",
"src": "wan",
"dest": "lan",
"proto": "tcp",
"src_dport": "25",
"dest_ip": "2001:db8:1000:1::1234",
"dest_port": "25",
"target": "dnat"
},
{
".description": "Ensure that family restricted redirect rules work properly",
"name": "Redirect test #7",
"family": "ipv4",
"src": "wan",
"dest": "lan",
"proto": "tcp",
"src_dport": "26",
"dest_port": "26",
"target": "dnat"
},
{
".description": "Ensure that family restricted redirect rules work properly",
"name": "Redirect test #8",
"family": "ipv6",
"src": "wan",
"dest": "lan",
"proto": "tcp",
"src_dport": "27",
"dest_port": "27",
"target": "dnat"
}
]
}
-- End --
-- Expect stderr --
[!] Section @redirect[2] (Redirect test #3) does not specify a destination, assuming 'lan'
[!] Section @redirect[3] (Redirect test #4) does not specify a destination, assuming 'lan'
[!] Section @redirect[4] (Redirect test #5) external address range cannot be determined, disabling reflection
-- End --
-- Expect stdout --
table inet fw4
flush table inet fw4
table inet fw4 {
#
# Defines
#
define wan_devices = { "pppoe-wan" }
define wan_subnets = { 10.11.12.0/24, 2001:db8:54:321::/64 }
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 noaddr_devices = { "wwan0" }
define noaddr_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 "pppoe-wan" jump input_wan comment "!fw4: Handle wan IPv4/IPv6 input traffic"
iifname "br-lan" jump input_lan comment "!fw4: Handle lan IPv4/IPv6 input traffic"
iifname "wwan0" jump input_noaddr comment "!fw4: Handle noaddr 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 "pppoe-wan" jump forward_wan comment "!fw4: Handle wan IPv4/IPv6 forward traffic"
iifname "br-lan" jump forward_lan comment "!fw4: Handle lan IPv4/IPv6 forward traffic"
iifname "wwan0" jump forward_noaddr comment "!fw4: Handle noaddr 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 "pppoe-wan" jump output_wan comment "!fw4: Handle wan IPv4/IPv6 output traffic"
oifname "br-lan" jump output_lan comment "!fw4: Handle lan IPv4/IPv6 output traffic"
oifname "wwan0" jump output_noaddr comment "!fw4: Handle noaddr 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_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
}
chain drop_from_wan {
iifname "pppoe-wan" counter drop comment "!fw4: drop wan IPv4/IPv6 traffic"
}
chain drop_to_wan {
oifname "pppoe-wan" counter drop comment "!fw4: drop wan IPv4/IPv6 traffic"
}
chain input_lan {
ct status dnat accept comment "!fw4: Accept port redirections"
jump drop_from_lan
}
chain output_lan {
jump drop_to_lan
}
chain forward_lan {
ct status dnat accept comment "!fw4: Accept port forwards"
jump drop_to_lan
}
chain accept_to_lan {
oifname "br-lan" counter accept comment "!fw4: accept lan IPv4/IPv6 traffic"
}
chain drop_from_lan {
iifname "br-lan" counter drop comment "!fw4: drop lan IPv4/IPv6 traffic"
}
chain drop_to_lan {
oifname "br-lan" counter drop comment "!fw4: drop lan IPv4/IPv6 traffic"
}
chain input_noaddr {
ct status dnat accept comment "!fw4: Accept port redirections"
jump drop_from_noaddr
}
chain output_noaddr {
jump drop_to_noaddr
}
chain forward_noaddr {
ct status dnat accept comment "!fw4: Accept port forwards"
jump drop_to_noaddr
}
chain drop_from_noaddr {
iifname "wwan0" counter drop comment "!fw4: drop noaddr IPv4/IPv6 traffic"
}
chain drop_to_noaddr {
oifname "wwan0" counter drop comment "!fw4: drop noaddr IPv4/IPv6 traffic"
}
#
# NAT rules
#
chain dstnat {
type nat hook prerouting priority dstnat; policy accept;
iifname "pppoe-wan" jump dstnat_wan comment "!fw4: Handle wan IPv4/IPv6 dstnat traffic"
iifname "br-lan" jump dstnat_lan comment "!fw4: Handle lan IPv4/IPv6 dstnat traffic"
iifname "wwan0" jump dstnat_noaddr comment "!fw4: Handle noaddr IPv4/IPv6 dstnat traffic"
}
chain srcnat {
type nat hook postrouting priority srcnat; policy accept;
oifname "pppoe-wan" jump srcnat_wan comment "!fw4: Handle wan IPv4/IPv6 srcnat traffic"
oifname "br-lan" jump srcnat_lan comment "!fw4: Handle lan IPv4/IPv6 srcnat traffic"
oifname "wwan0" jump srcnat_noaddr comment "!fw4: Handle noaddr IPv4/IPv6 srcnat traffic"
}
chain dstnat_wan {
meta nfproto ipv4 tcp dport 22 counter dnat 192.168.26.100:22 comment "!fw4: Redirect test #3"
meta nfproto ipv4 tcp dport 23 counter dnat 192.168.26.100:23 comment "!fw4: Redirect test #4"
meta nfproto ipv6 tcp dport 25 counter dnat [2001:db8:1000:1::1234]:25 comment "!fw4: Redirect test #6"
meta nfproto ipv4 tcp dport 26 counter redirect to 26 comment "!fw4: Redirect test #7"
meta nfproto ipv6 tcp dport 27 counter redirect to 27 comment "!fw4: Redirect test #8"
}
chain srcnat_wan {
meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 wan traffic"
meta nfproto ipv6 masquerade comment "!fw4: Masquerade IPv6 wan traffic"
}
chain dstnat_lan {
meta nfproto ipv4 udp dport 53 counter redirect to 53 comment "!fw4: Redirect test #1"
udp dport 53 counter redirect to 53 comment "!fw4: Redirect test #2"
ip saddr { 10.0.0.0/24, 192.168.26.0/24 } ip daddr 10.11.12.194 tcp dport 22 dnat 192.168.26.100:22 comment "!fw4: Redirect test #3 (reflection)"
ip saddr { 10.0.0.0/24, 192.168.26.0/24 } ip daddr 10.11.12.194 tcp dport 23 dnat 192.168.26.100:23 comment "!fw4: Redirect test #4 (reflection)"
ip6 saddr { 2001:db8:1000::/60, fd63:e2f:f706::/60 } ip6 daddr 2001:db8:54:321::2 tcp dport 25 dnat [2001:db8:1000:1::1234]:25 comment "!fw4: Redirect test #6 (reflection)"
}
chain srcnat_lan {
ip saddr { 10.0.0.0/24, 192.168.26.0/24 } ip daddr 192.168.26.100 tcp dport 22 snat 192.168.26.1 comment "!fw4: Redirect test #3 (reflection)"
ip saddr { 10.0.0.0/24, 192.168.26.0/24 } ip daddr 192.168.26.100 tcp dport 23 snat 10.11.12.194 comment "!fw4: Redirect test #4 (reflection)"
ip6 saddr { 2001:db8:1000::/60, fd63:e2f:f706::/60 } ip6 daddr 2001:db8:1000:1::1234 tcp dport 25 snat 2001:db8:1000:1::1 comment "!fw4: Redirect test #6 (reflection)"
}
chain dstnat_noaddr {
meta nfproto ipv4 tcp dport 24 counter dnat 192.168.26.100:24 comment "!fw4: Redirect test #5"
}
chain srcnat_noaddr {
meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 noaddr traffic"
meta nfproto ipv6 masquerade comment "!fw4: Masquerade IPv6 noaddr 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 --
|
