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define icmp_protos = { ipv6-icmp, icmp, igmp }
table arp filter {
limit lim_arp_local {
rate over 50 mbytes/second burst 50 mbytes
}
limit lim_arp_dsl {
rate over 1400 kbytes/second burst 1400 kbytes
}
counter arp-rx {}
counter arp-tx {}
counter arp-ratelimit-dsl-rx {}
counter arp-ratelimit-dsl-tx {}
counter arp-ratelimit-local-rx {}
counter arp-ratelimit-local-tx {}
chain input {
type filter hook input priority filter
policy accept
iifname != dsl limit name lim_arp_local counter name arp-ratelimit-local-rx drop
iifname dsl limit name lim_arp_dsl counter name arp-ratelimit-dsl-rx drop
counter name arp-rx
}
chain output {
type filter hook output priority filter
policy accept
oifname != dsl limit name lim_arp_local counter name arp-ratelimit-local-tx drop
oifname dsl limit name lim_arp_dsl counter name arp-ratelimit-dsl-tx drop
counter name arp-tx
}
}
table inet filter {
limit lim_reject {
rate over 1000/second burst 1000 packets
}
limit lim_icmp_local {
rate over 50 mbytes/second burst 50 mbytes
}
limit lim_icmp_dsl {
rate over 1400 kbytes/second burst 1400 kbytes
}
counter icmp-ratelimit-dsl-fw {}
counter icmp-ratelimit-local-fw {}
counter icmp-fw {}
counter invalid-fw {}
counter fw-lo {}
counter fw-lan {}
counter fw-dsl {}
counter reject-ratelimit-fw {}
counter reject-fw {}
counter reject-tcp-fw {}
counter reject-icmp-fw {}
counter invalid-rx {}
counter rx-lo {}
counter invalid-local4-rx {}
counter invalid-local6-rx {}
counter icmp-ratelimit-dsl-rx {}
counter icmp-ratelimit-local-rx {}
counter icmp-rx {}
counter ssh-rx {}
counter mosh-rx {}
counter dns-rx {}
counter wg-rx {}
counter yggdrasil-gre-rx {}
counter ipv6-pd-rx {}
counter ntp-rx {}
counter dhcp-rx {}
counter samba-rx {}
counter http-rx {}
counter established-rx {}
counter reject-ratelimit-rx {}
counter reject-rx {}
counter reject-tcp-rx {}
counter reject-icmp-rx {}
counter tx-lo {}
counter icmp-ratelimit-dsl-tx {}
counter icmp-ratelimit-local-tx {}
counter icmp-tx {}
counter ssh-tx {}
counter mosh-tx {}
counter dns-tx {}
counter wg-tx {}
counter yggdrasil-gre-tx {}
counter ipv6-pd-tx {}
counter ntp-tx {}
counter dhcp-tx {}
counter samba-tx {}
counter http-tx {}
counter tx {}
chain forward_icmp_accept {
oifname dsl limit name lim_icmp_dsl counter name icmp-ratelimit-dsl-fw drop
iifname dsl limit name lim_icmp_dsl counter name icmp-ratelimit-dsl-fw drop
oifname != dsl limit name lim_icmp_local counter name icmp-ratelimit-local-fw drop
iifname != dsl limit name lim_icmp_local counter name icmp-ratelimit-local-fw drop
counter name icmp-fw accept
}
chain forward {
type filter hook forward priority filter
policy drop
ct state invalid log prefix "drop invalid forward: " counter name invalid-fw drop
iifname lo counter name fw-lo accept
oifname {lan, dsl} meta l4proto $icmp_protos jump forward_icmp_accept
iifname lan oifname dsl counter name fw-lan accept
iifname dsl oifname lan ct state {established, related} counter name fw-dsl accept
limit name lim_reject log prefix "drop forward: " counter name reject-ratelimit-fw drop
log prefix "reject forward: " counter name reject-fw
meta l4proto tcp ct state new counter name reject-tcp-fw reject with tcp reset
ct state new counter name reject-icmp-fw reject
}
chain input {
type filter hook input priority filter
policy drop
ct state invalid log prefix "drop invalid input: " counter name invalid-rx drop
iifname lo counter name rx-lo accept
iif != lo ip daddr 127.0.0.1/8 counter name invalid-local4-rx reject
iif != lo ip6 daddr ::1/128 counter name invalid-local6-rx reject
iifname dsl meta l4proto $icmp_protos limit name lim_icmp_dsl counter name icmp-ratelimit-dsl-rx drop
iifname != dsl meta l4proto $icmp_protos limit name lim_icmp_local counter name icmp-ratelimit-local-rx drop
meta l4proto $icmp_protos counter name icmp-rx accept
tcp dport 22 counter name ssh-rx accept
udp dport 60001-61000 counter name mosh-rx accept
iifname lan tcp dport 53 counter name dns-rx accept
iifname lan udp dport 53 counter name dns-rx accept
meta protocol ip udp dport 51820 counter name wg-rx accept
meta protocol ip6 udp dport 51821 counter name wg-rx accept
iifname "yggdrasil-wg-*" meta l4proto gre counter name yggdrasil-gre-rx accept
iifname dsl meta protocol ip6 udp dport 546 udp sport 547 counter name ipv6-pd-rx accept
iifname mgmt udp dport 123 counter name ntp-rx accept
iifname {lan, mgmt} udp dport 67 counter name dhcp-rx accept
iifname lan udp dport { 137, 138, 3702 } counter name samba-rx accept
iifname lan tcp dport { 445, 139, 5357 } counter name samba-rx accept
iifname yggdrasil tcp dport 80 counter name http-rx accept
ct state {established, related} counter name established-rx accept
limit name lim_reject log prefix "drop input: " counter name reject-ratelimit-rx drop
log prefix "reject input: " counter name reject-rx
meta l4proto tcp ct state new counter name reject-tcp-rx reject with tcp reset
ct state new counter name reject-icmp-rx reject
}
chain output {
type filter hook output priority filter
policy accept
oifname lo counter name tx-lo accept
oifname dsl meta l4proto $icmp_protos limit name lim_icmp_dsl counter name icmp-ratelimit-dsl-tx drop
oifname != dsl meta l4proto $icmp_protos limit name lim_icmp_local counter name icmp-ratelimit-local-tx drop
meta l4proto $icmp_protos counter name icmp-tx accept
tcp sport 22 counter name ssh-tx
udp sport 60001-61000 counter name mosh-tx
tcp sport 53 counter name dns-tx
udp sport 53 counter name dns-tx
meta protocol ip udp sport 51820 counter name wg-tx
meta protocol ip6 udp sport 51821 counter name wg-tx
iifname "yggdrasil-wg-*" meta l4proto gre counter name yggdrasil-gre-tx
meta protocol ip6 udp sport 546 udp dport 547 counter name ipv6-pd-tx
udp sport 123 counter name ntp-tx accept
udp sport 67 counter name dhcp-tx accept
udp sport { 137, 138, 3702 } counter name samba-tx accept
tcp sport { 445, 139, 5357 } counter name samba-tx accept
tcp sport 80 counter name http-tx accept
counter name tx
}
}
table ip nat {
counter dsl-nat {}
chain postrouting {
type nat hook postrouting priority srcnat
policy accept
oifname dsl counter name dsl-nat masquerade
}
}
table ip mss_clamp {
counter dsl-mss-clamp {}
chain postrouting {
type filter hook postrouting priority mangle
policy accept
oifname dsl tcp flags & (syn|rst) == syn counter name dsl-mss-clamp tcp option maxseg size set rt mtu
}
}
|
