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|
Testing handling of ICMP related options.
-- 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 --
{
"rule": [
{
".description": "Proto 'icmp' maps to a single IPv4 and IPv6 rule",
"proto": "icmp",
"name": "ICMP rule #1"
},
{
".description": "Proto 'icmpv6' maps to IPv6 rule only",
"proto": "icmpv6",
"name": "ICMP rule #2",
},
{
".description": "Proto 'ipv6-icmp' is an alias for 'icmpv6'",
"proto": "ipv6-icmp",
"name": "ICMP rule #3",
},
{
".description": "Proto 'icmp' with IPv4 specific types inhibits IPv6 rule",
"proto": "icmp",
"name": "ICMP rule #4",
"icmp_type": [ "ip-header-bad" ]
},
{
".description": "Proto 'icmp' with IPv6 specific types inhibits IPv4 rule",
"proto": "icmp",
"name": "ICMP rule #5",
"icmp_type": [ "neighbour-advertisement" ]
}
]
}
-- End --
-- Expect stdout --
table inet fw4
flush table inet fw4
table inet fw4 {
#
# Defines
#
#
# 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"
}
chain forward {
type filter hook forward priority filter; policy drop;
ct state vmap { established : accept, related : accept } comment "!fw4: Handle forwarded flows"
}
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"
meta l4proto { "icmp", "ipv6-icmp" } counter comment "!fw4: ICMP rule #1"
meta nfproto ipv6 meta l4proto ipv6-icmp counter comment "!fw4: ICMP rule #2"
meta nfproto ipv6 meta l4proto ipv6-icmp counter comment "!fw4: ICMP rule #3"
meta nfproto ipv4 icmp type . icmp code { 12 . 0 } counter comment "!fw4: ICMP rule #4"
meta nfproto ipv6 icmpv6 type . icmpv6 code { 136 . 0 } counter comment "!fw4: ICMP rule #5"
}
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"
}
#
# NAT rules
#
chain dstnat {
type nat hook prerouting priority dstnat; policy accept;
}
chain srcnat {
type nat hook postrouting priority srcnat; policy accept;
}
#
# 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 --
|
