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  1.  
  2.  
  3. BusyBox v1.35.0 (2023-04-09 12:27:46 UTC) built-in shell (ash)
  4.  
  5. _______ ________ __
  6. | |.-----.-----.-----.| | | |.----.| |_
  7. | - || _ | -__| || | | || _|| _|
  8. |_______|| __|_____|__|__||________||__| |____|
  9. |__| W I R E L E S S F R E E D O M
  10. -----------------------------------------------------
  11. OpenWrt 22.03.4, r20123-38ccc47687
  12. -----------------------------------------------------
  13. root@GL-X750:~# nft list ruleset
  14. table ip filter {
  15. chain INPUT {
  16. type filter hook input priority filter; policy accept;
  17. }
  18.  
  19. chain FORWARD {
  20. type filter hook forward priority filter; policy accept;
  21. # xt_set counter packets 0 bytes 0 drop
  22. }
  23. }
  24. table inet fw4 {
  25. chain input {
  26. type filter hook input priority filter; policy accept;
  27. iifname "lo" accept comment "!fw4: Accept traffic from loopback"
  28. ct state established,related accept comment "!fw4: Allow inbound established and related flows"
  29. tcp flags syn / fin,syn,rst,ack jump syn_flood comment "!fw4: Rate limit TCP syn packets"
  30. iifname "br-lan" jump input_lan comment "!fw4: Handle lan IPv4/IPv6 input traffic"
  31. iifname { "eth0", "wwan0" } jump input_wan comment "!fw4: Handle wan IPv4/IPv6 input traffic"
  32. iifname "wgclient" jump input_wgclient comment "!fw4: Handle wgclient IPv4/IPv6 input traffic"
  33. }
  34.  
  35. chain forward {
  36. type filter hook forward priority filter; policy drop;
  37. ct state established,related accept comment "!fw4: Allow forwarded established and related flows"
  38. iifname "br-lan" jump forward_lan comment "!fw4: Handle lan IPv4/IPv6 forward traffic"
  39. iifname { "eth0", "wwan0" } jump forward_wan comment "!fw4: Handle wan IPv4/IPv6 forward traffic"
  40. iifname "wgclient" jump forward_wgclient comment "!fw4: Handle wgclient IPv4/IPv6 forward traffic"
  41. jump handle_reject
  42. }
  43.  
  44. chain output {
  45. type filter hook output priority filter; policy accept;
  46. oifname "lo" accept comment "!fw4: Accept traffic towards loopback"
  47. ct state established,related accept comment "!fw4: Allow outbound established and related flows"
  48. oifname "br-lan" jump output_lan comment "!fw4: Handle lan IPv4/IPv6 output traffic"
  49. oifname { "eth0", "wwan0" } jump output_wan comment "!fw4: Handle wan IPv4/IPv6 output traffic"
  50. oifname "wgclient" jump output_wgclient comment "!fw4: Handle wgclient IPv4/IPv6 output traffic"
  51. }
  52.  
  53. chain prerouting {
  54. type filter hook prerouting priority filter; policy accept;
  55. iifname "br-lan" jump helper_lan comment "!fw4: Handle lan IPv4/IPv6 helper assignment"
  56. iifname "wgclient" jump helper_wgclient comment "!fw4: Handle wgclient IPv4/IPv6 helper assignment"
  57. }
  58.  
  59. chain handle_reject {
  60. meta l4proto tcp reject with tcp reset comment "!fw4: Reject TCP traffic"
  61. reject comment "!fw4: Reject any other traffic"
  62. }
  63.  
  64. chain syn_flood {
  65. limit rate 25/second burst 50 packets return comment "!fw4: Accept SYN packets below rate-limit"
  66. drop comment "!fw4: Drop excess packets"
  67. }
  68.  
  69. chain input_guest {
  70. udp dport 67-68 counter packets 0 bytes 0 accept comment "!fw4: Allow-DHCP"
  71. tcp dport 53 counter packets 0 bytes 0 accept comment "!fw4: Allow-DNS"
  72. udp dport 53 counter packets 0 bytes 0 accept comment "!fw4: Allow-DNS"
  73. jump accept_from_guest
  74. }
  75.  
  76. chain output_guest {
  77. jump accept_to_guest
  78. }
  79.  
  80. chain forward_guest {
  81. jump accept_to_wgclient comment "!fw4: Accept guest to wgclient forwarding"
  82. jump accept_to_guest
  83. }
  84.  
  85. chain helper_guest {
  86. }
  87.  
  88. chain accept_from_guest {
  89. }
  90.  
  91. chain accept_to_guest {
  92. }
  93.  
  94. chain input_lan {
  95. jump accept_from_lan
  96. }
  97.  
  98. chain output_lan {
  99. jump accept_to_lan
  100. }
  101.  
  102. chain forward_lan {
  103. jump accept_to_wgclient comment "!fw4: Accept lan to wgclient forwarding"
  104. jump accept_to_lan
  105. }
  106.  
  107. chain helper_lan {
  108. }
  109.  
  110. chain accept_from_lan {
  111. iifname "br-lan" counter packets 205 bytes 14753 accept comment "!fw4: accept lan IPv4/IPv6 traffic"
  112. }
  113.  
  114. chain accept_to_lan {
  115. oifname "br-lan" counter packets 20 bytes 2309 accept comment "!fw4: accept lan IPv4/IPv6 traffic"
  116. }
  117.  
  118. chain input_wan {
  119. meta nfproto ipv4 udp dport 68 counter packets 0 bytes 0 accept comment "!fw4: Allow-DHCP-Renew"
  120. meta nfproto ipv4 meta l4proto igmp counter packets 0 bytes 0 accept comment "!fw4: Allow-IGMP"
  121. meta nfproto ipv6 udp dport 546 counter packets 0 bytes 0 accept comment "!fw4: Allow-DHCPv6"
  122. ip6 saddr fe80::/10 icmpv6 type . icmpv6 code { mld-listener-query . no-route, mld-listener-report . no-route, mld-listener-done . no-route, mld2-listener-report . no-route } counter packets 0 bytes 0 accept comment "!fw4: Allow-MLD"
  123. icmpv6 type { destination-unreachable, time-exceeded, echo-request, echo-reply, nd-router-solicit, nd-router-advert } limit rate 1000/second counter packets 0 bytes 0 accept comment "!fw4: Allow-ICMPv6-Input"
  124. icmpv6 type . icmpv6 code { packet-too-big . no-route, parameter-problem . no-route, parameter-problem . admin-prohibited, nd-neighbor-solicit . no-route, nd-neighbor-advert . no-route } limit rate 1000/second counter packets 0 bytes 0 accept comment "!fw4: Allow-ICMPv6-Input"
  125. jump drop_from_wan
  126. }
  127.  
  128. chain output_wan {
  129. jump accept_to_wan
  130. }
  131.  
  132. chain forward_wan {
  133. icmpv6 type { destination-unreachable, time-exceeded, echo-request, echo-reply } limit rate 1000/second counter packets 0 bytes 0 accept comment "!fw4: Allow-ICMPv6-Forward"
  134. icmpv6 type . icmpv6 code { packet-too-big . no-route, parameter-problem . no-route, parameter-problem . admin-prohibited } limit rate 1000/second counter packets 0 bytes 0 accept comment "!fw4: Allow-ICMPv6-Forward"
  135. meta l4proto esp counter packets 0 bytes 0 jump accept_to_lan comment "!fw4: Allow-IPSec-ESP"
  136. udp dport 500 counter packets 0 bytes 0 jump accept_to_lan comment "!fw4: Allow-ISAKMP"
  137. jump reject_to_wan
  138. }
  139.  
  140. chain accept_to_wan {
  141. oifname { "eth0", "wwan0" } counter packets 124 bytes 10416 accept comment "!fw4: accept wan IPv4/IPv6 traffic"
  142. }
  143.  
  144. chain reject_to_wan {
  145. oifname { "eth0", "wwan0" } counter packets 0 bytes 0 jump handle_reject comment "!fw4: reject wan IPv4/IPv6 traffic"
  146. }
  147.  
  148. chain drop_from_wan {
  149. iifname { "eth0", "wwan0" } counter packets 0 bytes 0 drop comment "!fw4: drop wan IPv4/IPv6 traffic"
  150. }
  151.  
  152. chain input_wgclient {
  153. jump accept_from_wgclient
  154. }
  155.  
  156. chain output_wgclient {
  157. jump accept_to_wgclient
  158. }
  159.  
  160. chain forward_wgclient {
  161. jump accept_to_wan comment "!fw4: Accept wgclient to wan forwarding"
  162. jump accept_to_lan comment "!fw4: Accept wgclient to lan forwarding"
  163. jump accept_to_guest comment "!fw4: Accept wgclient to guest forwarding"
  164. jump drop_to_wgclient
  165. }
  166.  
  167. chain helper_wgclient {
  168. }
  169.  
  170. chain accept_from_wgclient {
  171. iifname "wgclient" counter packets 52 bytes 2704 accept comment "!fw4: accept wgclient IPv4/IPv6 traffic"
  172. }
  173.  
  174. chain accept_to_wgclient {
  175. oifname "wgclient" counter packets 405 bytes 46226 accept comment "!fw4: accept wgclient IPv4/IPv6 traffic"
  176. }
  177.  
  178. chain drop_to_wgclient {
  179. oifname "wgclient" counter packets 0 bytes 0 drop comment "!fw4: drop wgclient IPv4/IPv6 traffic"
  180. }
  181.  
  182. chain dstnat {
  183. type nat hook prerouting priority dstnat; policy accept;
  184. }
  185.  
  186. chain srcnat {
  187. type nat hook postrouting priority srcnat; policy accept;
  188. oifname { "eth0", "wwan0" } jump srcnat_wan comment "!fw4: Handle wan IPv4/IPv6 srcnat traffic"
  189. }
  190.  
  191. chain srcnat_wan {
  192. meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 wan traffic"
  193. }
  194.  
  195. chain raw_prerouting {
  196. type filter hook prerouting priority raw; policy accept;
  197. }
  198.  
  199. chain raw_output {
  200. type filter hook output priority raw; policy accept;
  201. }
  202.  
  203. chain mangle_prerouting {
  204. type filter hook prerouting priority mangle; policy accept;
  205. }
  206.  
  207. chain mangle_postrouting {
  208. type filter hook postrouting priority mangle; policy accept;
  209. }
  210.  
  211. chain mangle_input {
  212. type filter hook input priority mangle; policy accept;
  213. }
  214.  
  215. chain mangle_output {
  216. type route hook output priority mangle; policy accept;
  217. meta skgid 65533 counter packets 0 bytes 0 meta mark set meta mark | 0x00008000
  218. ip protocol tcp ct mark & 0x00008000 == 0x00008000 counter packets 0 bytes 0 meta mark set ct mark comment "out_conn_mark_restore"
  219. ip protocol udp ct mark & 0x00008000 == 0x00008000 counter packets 0 bytes 0 meta mark set ct mark comment "out_conn_mark_restore"
  220. }
  221.  
  222. chain mangle_forward {
  223. type filter hook forward priority mangle; policy accept;
  224. iifname { "eth0", "wwan0" } tcp flags syn tcp option maxseg size set rt mtu comment "!fw4: Zone wan IPv4/IPv6 ingress MTU fixing"
  225. oifname { "eth0", "wwan0" } tcp flags syn tcp option maxseg size set rt mtu comment "!fw4: Zone wan IPv4/IPv6 egress MTU fixing"
  226. iifname "wgclient" tcp flags syn tcp option maxseg size set rt mtu comment "!fw4: Zone wgclient IPv4/IPv6 ingress MTU fixing"
  227. oifname "wgclient" tcp flags syn tcp option maxseg size set rt mtu comment "!fw4: Zone wgclient IPv4/IPv6 egress MTU fixing"
  228. }
  229. }
  230. table ip mangle {
  231. chain PREROUTING {
  232. type filter hook prerouting priority mangle; policy accept;
  233. counter packets 7244 bytes 4624840 jump mwan3_hook
  234. counter packets 6957 bytes 4582956 jump VPN_SER_POLICY
  235. }
  236.  
  237. chain mwan3_ifaces_in {
  238. # xt_mark counter packets 839 bytes 104801 jump mwan3_iface_in_modem_1_1_2
  239. }
  240.  
  241. chain mwan3_connected {
  242. # xt_set counter packets 1081 bytes 171880 # xt_MARK
  243. }
  244.  
  245. chain mwan3_rules {
  246. # xt_mark counter packets 499 bytes 53452 jump mwan3_policy_default_poli
  247. }
  248.  
  249. chain mwan3_hook {
  250. counter packets 12354 bytes 6573179 # xt_CONNMARK
  251. # xt_mark counter packets 913 bytes 116579 jump mwan3_ifaces_in
  252. # xt_mark counter packets 913 bytes 116579 jump mwan3_connected
  253. # xt_mark counter packets 564 bytes 61025 jump mwan3_rules
  254. counter packets 12354 bytes 6573179 # xt_CONNMARK
  255. # xt_mark counter packets 1668 bytes 208666 jump mwan3_connected
  256. }
  257.  
  258. chain OUTPUT {
  259. type route hook output priority mangle; policy accept;
  260. counter packets 5110 bytes 1948339 jump mwan3_hook
  261. counter packets 4744 bytes 1569220 jump ROUTE_POLICY_DNS
  262. }
  263.  
  264. chain mwan3_policy_default_poli {
  265. # xt_mark # xt_comment counter packets 499 bytes 53452 # xt_MARK
  266. }
  267.  
  268. chain mwan3_policy_default_poli_v6 {
  269. # xt_mark # xt_comment counter packets 0 bytes 0 # xt_MARK
  270. }
  271.  
  272. chain mwan3_iface_in_modem_1_1_2 {
  273. iifname "wwan0" # xt_set # xt_mark # xt_comment counter packets 0 bytes 0 # xt_MARK
  274. iifname "wwan0" # xt_mark # xt_comment counter packets 0 bytes 0 # xt_MARK
  275. }
  276.  
  277. chain ROUTE_POLICY_DNS {
  278. meta l4proto tcp ip daddr 62.87.92.201 # xt_tcp counter packets 0 bytes 0 # xt_MARK
  279. meta l4proto udp ip daddr 62.87.92.201 # xt_udp counter packets 0 bytes 0 # xt_MARK
  280. meta l4proto tcp ip daddr 212.166.167.71 # xt_tcp counter packets 0 bytes 0 # xt_MARK
  281. meta l4proto udp ip daddr 212.166.167.71 # xt_udp counter packets 0 bytes 0 # xt_MARK
  282. }
  283.  
  284. chain VPN_SER_POLICY {
  285. }
  286. }
  287. table ip6 mangle {
  288. chain mwan3_ifaces_in {
  289. }
  290.  
  291. chain mwan3_connected {
  292. # xt_set counter packets 0 bytes 0 # xt_MARK
  293. }
  294.  
  295. chain mwan3_rules {
  296. # xt_mark counter packets 0 bytes 0 jump mwan3_policy_default_poli_v6
  297. }
  298.  
  299. chain mwan3_hook {
  300. meta l4proto ipv6-icmp # xt_icmp6 counter packets 0 bytes 0 return
  301. meta l4proto ipv6-icmp # xt_icmp6 counter packets 0 bytes 0 return
  302. meta l4proto ipv6-icmp # xt_icmp6 counter packets 0 bytes 0 return
  303. meta l4proto ipv6-icmp # xt_icmp6 counter packets 0 bytes 0 return
  304. meta l4proto ipv6-icmp # xt_icmp6 counter packets 0 bytes 0 return
  305. meta l4proto ipv6-icmp # xt_set # xt_icmp6 counter packets 0 bytes 0 return
  306. counter packets 40 bytes 4482 # xt_CONNMARK
  307. # xt_mark counter packets 40 bytes 4482 jump mwan3_ifaces_in
  308. # xt_mark counter packets 40 bytes 4482 jump mwan3_connected
  309. # xt_mark counter packets 40 bytes 4482 jump mwan3_rules
  310. counter packets 40 bytes 4482 # xt_CONNMARK
  311. # xt_mark counter packets 40 bytes 4482 jump mwan3_connected
  312. }
  313.  
  314. chain PREROUTING {
  315. type filter hook prerouting priority mangle; policy accept;
  316. counter packets 20 bytes 2241 jump mwan3_hook
  317. }
  318.  
  319. chain OUTPUT {
  320. type route hook output priority mangle; policy accept;
  321. counter packets 20 bytes 2241 jump mwan3_hook
  322. }
  323.  
  324. chain mwan3_policy_default_poli {
  325. # xt_mark # xt_comment counter packets 0 bytes 0 # xt_MARK
  326. }
  327.  
  328. chain mwan3_policy_default_poli_v6 {
  329. # xt_mark # xt_comment counter packets 0 bytes 0 # xt_MARK
  330. }
  331. }
  332. root@GL-X750:~#
  333.  
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