tests/01_configuration/01_ruleset

   1 Testing the ruleset rendered from the default firewall configuration.
   2
   3 -- Testcase --
   4 {%
   5         include("./root/usr/share/firewall4/main.uc", {
   6                 TRACE_CALLS: "stderr",
   7
   8                 getenv: function(varname) {
   9                         switch (varname) {
  10                         case 'ACTION':
  11                                 return 'print';
  12                         }
  13                 }
  14         })
  15 %}
  16 -- End --
  17
  18 -- Expect stdout --
  19 table inet fw4
  20 flush table inet fw4
  21
  22 table inet fw4 {
  23         #
  24         # Flowtable
  25         #
  26
  27         flowtable ft {
  28                 hook ingress priority 0;
  29                 devices = { "eth0", "eth1" };
  30                 flags offload;
  31         }
  32
  33
  34         #
  35         # CT helper definitions
  36         #
  37
  38         ct helper amanda {
  39                 type "amanda" protocol udp;
  40         }
  41
  42         ct helper ftp {
  43                 type "ftp" protocol tcp;
  44         }
  45
  46         ct helper RAS {
  47                 type "RAS" protocol udp;
  48         }
  49
  50         ct helper Q.931 {
  51                 type "Q.931" protocol tcp;
  52         }
  53
  54         ct helper irc {
  55                 type "irc" protocol tcp;
  56         }
  57
  58         ct helper netbios-ns {
  59                 type "netbios-ns" protocol udp;
  60         }
  61
  62         ct helper pptp {
  63                 type "pptp" protocol tcp;
  64         }
  65
  66         ct helper sane {
  67                 type "sane" protocol tcp;
  68         }
  69
  70         ct helper sip {
  71                 type "sip" protocol udp;
  72         }
  73
  74         ct helper snmp {
  75                 type "snmp" protocol udp;
  76         }
  77
  78         ct helper tftp {
  79                 type "tftp" protocol udp;
  80         }
  81
  82         ct helper rtsp {
  83                 type "rtsp" protocol tcp;
  84         }
  85
  86
  87         #
  88         # Defines
  89         #
  90
  91         define lan_devices = { "br-lan" }
  92         define lan_subnets = { 10.0.0.0/24, 192.168.26.0/24, 2001:db8:1000::/60, fd63:e2f:f706::/60 }
  93
  94         define wan_devices = { "pppoe-wan" }
  95         define wan_subnets = { 10.11.12.0/24, 2001:db8:54:321::/64 }
  96
  97
  98         #
  99         # User includes
 100         #
 101
 102         include "/etc/nftables.d/*.nft"
 103
 104
 105         #
 106         # Filter rules
 107         #
 108
 109         chain input {
 110                 type filter hook input priority filter; policy drop;
 111
 112                 iifname "lo" accept comment "!fw4: Accept traffic from loopback"
 113
 114                 ct state established,related accept comment "!fw4: Allow inbound established and related flows"
 115                 tcp flags & (fin | syn | rst | ack) == syn jump syn_flood comment "!fw4: Rate limit TCP syn packets"
 116                 iifname "br-lan" jump input_lan comment "!fw4: Handle lan IPv4/IPv6 input traffic"
 117                 iifname "pppoe-wan" jump input_wan comment "!fw4: Handle wan IPv4/IPv6 input traffic"
 118                 jump handle_reject
 119         }
 120
 121         chain forward {
 122                 type filter hook forward priority filter; policy drop;
 123
 124                 meta l4proto { tcp, udp } flow offload @ft;
 125                 ct state established,related accept comment "!fw4: Allow forwarded established and related flows"
 126                 iifname "br-lan" jump forward_lan comment "!fw4: Handle lan IPv4/IPv6 forward traffic"
 127                 iifname "pppoe-wan" jump forward_wan comment "!fw4: Handle wan IPv4/IPv6 forward traffic"
 128                 jump handle_reject
 129         }
 130
 131         chain output {
 132                 type filter hook output priority filter; policy accept;
 133
 134                 oifname "lo" accept comment "!fw4: Accept traffic towards loopback"
 135
 136                 ct state established,related accept comment "!fw4: Allow outbound established and related flows"
 137                 meta l4proto tcp counter comment "!fw4: Test-Deprecated-Rule-Option"
 138                 oifname "br-lan" jump output_lan comment "!fw4: Handle lan IPv4/IPv6 output traffic"
 139                 oifname "pppoe-wan" jump output_wan comment "!fw4: Handle wan IPv4/IPv6 output traffic"
 140         }
 141
 142         chain prerouting {
 143                 type filter hook prerouting priority filter; policy accept;
 144                 iifname "br-lan" jump helper_lan comment "!fw4: Handle lan IPv4/IPv6 helper assignment"
 145         }
 146
 147         chain handle_reject {
 148                 meta l4proto tcp reject with tcp reset comment "!fw4: Reject TCP traffic"
 149                 reject with icmpx type port-unreachable comment "!fw4: Reject any other traffic"
 150         }
 151
 152         chain syn_flood {
 153                 limit rate 25/second burst 50 packets return comment "!fw4: Accept SYN packets below rate-limit"
 154                 drop comment "!fw4: Drop excess packets"
 155         }
 156
 157         chain input_lan {
 158                 jump accept_from_lan
 159         }
 160
 161         chain output_lan {
 162                 jump accept_to_lan
 163         }
 164
 165         chain forward_lan {
 166                 jump accept_to_wan comment "!fw4: Accept lan to wan forwarding"
 167                 jump accept_to_lan
 168         }
 169
 170         chain helper_lan {
 171                 meta l4proto udp udp dport 10080 ct helper set "amanda" comment "!fw4: Amanda backup and archiving proto"
 172                 meta l4proto tcp tcp dport 21 ct helper set "ftp" comment "!fw4: FTP passive connection tracking"
 173                 meta l4proto udp udp dport 1719 ct helper set "RAS" comment "!fw4: RAS proto tracking"
 174                 meta l4proto tcp tcp dport 1720 ct helper set "Q.931" comment "!fw4: Q.931 proto tracking"
 175                 meta nfproto ipv4 meta l4proto tcp tcp dport 6667 ct helper set "irc" comment "!fw4: IRC DCC connection tracking"
 176                 meta nfproto ipv4 meta l4proto udp udp dport 137 ct helper set "netbios-ns" comment "!fw4: NetBIOS name service broadcast tracking"
 177                 meta nfproto ipv4 meta l4proto tcp tcp dport 1723 ct helper set "pptp" comment "!fw4: PPTP VPN connection tracking"
 178                 meta l4proto tcp tcp dport 6566 ct helper set "sane" comment "!fw4: SANE scanner connection tracking"
 179                 meta l4proto udp udp dport 5060 ct helper set "sip" comment "!fw4: SIP VoIP connection tracking"
 180                 meta nfproto ipv4 meta l4proto udp udp dport 161 ct helper set "snmp" comment "!fw4: SNMP monitoring connection tracking"
 181                 meta l4proto udp udp dport 69 ct helper set "tftp" comment "!fw4: TFTP connection tracking"
 182                 meta nfproto ipv4 meta l4proto tcp tcp dport 554 ct helper set "rtsp" comment "!fw4: RTSP connection tracking"
 183         }
 184
 185         chain accept_from_lan {
 186                 iifname "br-lan" counter accept comment "!fw4: accept lan IPv4/IPv6 traffic"
 187         }
 188
 189         chain accept_to_lan {
 190                 oifname "br-lan" counter accept comment "!fw4: accept lan IPv4/IPv6 traffic"
 191         }
 192
 193         chain input_wan {
 194                 meta nfproto ipv4 udp dport 68 counter accept comment "!fw4: Allow-DHCP-Renew"
 195                 meta nfproto ipv4 icmp type 8 counter accept comment "!fw4: Allow-Ping"
 196                 meta nfproto ipv4 meta l4proto igmp counter accept comment "!fw4: Allow-IGMP"
 197                 ip6 saddr fc00::/6 ip6 daddr fc00::/6 udp dport 546 counter accept comment "!fw4: Allow-DHCPv6"
 198                 ip6 saddr fe80::/10 icmpv6 type . icmpv6 code { 130 . 0, 131 . 0, 132 . 0, 143 . 0 } counter accept comment "!fw4: Allow-MLD"
 199                 meta nfproto ipv6 icmpv6 type { 128, 129, 1, 3, 133, 134 } limit rate 1000/second counter accept comment "!fw4: Allow-ICMPv6-Input"
 200                 meta nfproto ipv6 icmpv6 type . icmpv6 code { 2 . 0, 4 . 0, 4 . 1, 135 . 0, 136 . 0 } limit rate 1000/second counter accept comment "!fw4: Allow-ICMPv6-Input"
 201                 jump reject_from_wan
 202         }
 203
 204         chain output_wan {
 205                 jump accept_to_wan
 206         }
 207
 208         chain forward_wan {
 209                 meta nfproto ipv6 icmpv6 type { 128, 129, 1, 3 } limit rate 1000/second counter accept comment "!fw4: Allow-ICMPv6-Forward"
 210                 meta nfproto ipv6 icmpv6 type . icmpv6 code { 2 . 0, 4 . 0, 4 . 1 } limit rate 1000/second counter accept comment "!fw4: Allow-ICMPv6-Forward"
 211                 meta l4proto esp counter jump accept_to_lan comment "!fw4: Allow-IPSec-ESP"
 212                 udp dport 500 counter jump accept_to_lan comment "!fw4: Allow-ISAKMP"
 213                 jump reject_to_wan
 214         }
 215
 216         chain accept_to_wan {
 217                 meta nfproto ipv4 oifname "pppoe-wan" ct state invalid counter drop comment "!fw4: Prevent NAT leakage"
 218                 oifname "pppoe-wan" counter accept comment "!fw4: accept wan IPv4/IPv6 traffic"
 219         }
 220
 221         chain reject_from_wan {
 222                 iifname "pppoe-wan" counter jump handle_reject comment "!fw4: reject wan IPv4/IPv6 traffic"
 223         }
 224
 225         chain reject_to_wan {
 226                 oifname "pppoe-wan" counter jump handle_reject comment "!fw4: reject wan IPv4/IPv6 traffic"
 227         }
 228
 229
 230         #
 231         # NAT rules
 232         #
 233
 234         chain dstnat {
 235                 type nat hook prerouting priority dstnat; policy accept;
 236         }
 237
 238         chain srcnat {
 239                 type nat hook postrouting priority srcnat; policy accept;
 240                 oifname "pppoe-wan" jump srcnat_wan comment "!fw4: Handle wan IPv4/IPv6 srcnat traffic"
 241         }
 242
 243         chain srcnat_wan {
 244                 meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 wan traffic"
 245         }
 246
 247
 248         #
 249         # Raw rules (notrack)
 250         #
 251
 252         chain raw_prerouting {
 253                 type filter hook prerouting priority raw; policy accept;
 254         }
 255
 256         chain raw_output {
 257                 type filter hook output priority raw; policy accept;
 258         }
 259
 260
 261         #
 262         # Mangle rules
 263         #
 264
 265         chain mangle_prerouting {
 266                 type filter hook prerouting priority mangle; policy accept;
 267         }
 268
 269         chain mangle_postrouting {
 270                 type filter hook postrouting priority mangle; policy accept;
 271         }
 272
 273         chain mangle_input {
 274                 type filter hook input priority mangle; policy accept;
 275         }
 276
 277         chain mangle_output {
 278                 type route hook output priority mangle; policy accept;
 279         }
 280
 281         chain mangle_forward {
 282                 type filter hook forward priority mangle; policy accept;
 283                 iifname "pppoe-wan" tcp flags syn tcp option maxseg size set rt mtu comment "!fw4: Zone wan IPv4/IPv6 ingress MTU fixing"
 284                 oifname "pppoe-wan" tcp flags syn tcp option maxseg size set rt mtu comment "!fw4: Zone wan IPv4/IPv6 egress MTU fixing"
 285         }
 286 }
 287 -- End --
 288
 289 -- Expect stderr --
 290 [call] ctx.call object <network.interface> method <dump> args <null>
 291 [call] ctx.call object <service> method <get_data> args <{ "type": "firewall" }>
 292 [call] fs.open path </proc/version> mode <r>
 293 [call] fs.stat path </sys/module/nf_conntrack_amanda>
 294 [call] fs.stat path </sys/module/nf_conntrack_ftp>
 295 [call] fs.stat path </sys/module/nf_conntrack_h323>
 296 [call] fs.stat path </sys/module/nf_conntrack_h323>
 297 [call] fs.stat path </sys/module/nf_conntrack_irc>
 298 [call] fs.stat path </sys/module/nf_conntrack_netbios_ns>
 299 [call] fs.stat path </sys/module/nf_conntrack_pptp>
 300 [call] fs.stat path </sys/module/nf_conntrack_sane>
 301 [call] fs.stat path </sys/module/nf_conntrack_sip>
 302 [call] fs.stat path </sys/module/nf_conntrack_snmp>
 303 [call] fs.stat path </sys/module/nf_conntrack_tftp>
 304 [call] fs.stat path </sys/module/nf_conntrack_rtsp>
 305 [!] Section @defaults[0] specifies unknown option 'unknown_defaults_option'
 306 [!] Section @rule[9] (Test-Deprecated-Rule-Option) option '_name' is deprecated by fw4
 307 [!] Section @rule[9] (Test-Deprecated-Rule-Option) specifies unknown option 'unknown_rule_option'
 308 [call] fs.glob pattern </usr/share/nftables.d/ruleset-pre/*.nft>
 309 [call] fs.glob pattern </usr/share/nftables.d/ruleset-post/*.nft>
 310 [call] fs.glob pattern </usr/share/nftables.d/table-pre/*.nft>
 311 [call] fs.glob pattern </usr/share/nftables.d/table-post/*.nft>
 312 [call] fs.lsdir path </usr/share/nftables.d/chain-pre>
 313 [call] fs.lsdir path </usr/share/nftables.d/chain-post>
 314 [call] ctx.call object <network.device> method <status> args <null>
 315 [call] fs.opendir path </sys/class/net/br-lan>
 316 [call] fs.opendir path </sys/class/net/eth0>
 317 [call] fs.opendir path </sys/class/net/eth1>
 318 [call] system command </usr/sbin/nft -c '
 319                 add table inet fw4-hw-offload-test;
 320                 add flowtable inet fw4-hw-offload-test ft {
 321                         hook ingress priority 0;
 322                         devices = { "eth0", "eth1" };
 323                         flags offload;
 324                 }
 325         ' 2>/dev/null> timeout <null>
 326 [call] fs.popen cmdline </usr/sbin/nft --terse --json list flowtables inet> mode <r>
 327 [call] fs.readfile path </sys/class/net/br-lan/flags> limit <null>
 328 [call] fs.readfile path </sys/class/net/br-lan/flags> limit <null>
 329 -- End --