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