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nftables: split out TCP service chain

This commit is contained in:
Daniel Micay 2024-04-11 11:49:22 -04:00
parent b152574da8
commit 3d886dea43
9 changed files with 72 additions and 72 deletions
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16
nftables-attestation.conf
View File

@ -55,8 +55,14 @@ table inet filter {
type filter hook input priority filter
policy drop
iif lo goto input-loopback
tcp dport { 22, 80, 443 } goto input-tcp-service
iif lo accept
meta l4proto { icmp, ipv6-icmp } accept
ct state vmap { new : goto graceful-reject, established : accept, related : accept }
}
chain input-tcp-service {
iif lo goto input-loopback
# for synproxy, SYN is untracked and first ACK is invalid which are handled via fallthrough
ct state vmap { new : goto input-new, established : goto input-established, related : accept }
@ -65,12 +71,10 @@ table inet filter {
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
tcp dport { 80, 443 } ip6 saddr and ffff:ffff:ffff:ffff:: @ip6-connlimit-main counter reject with tcp reset
tcp dport { 22, 80, 443 } synproxy mss 1460 wscale 7 timestamp sack-perm
synproxy mss 1460 wscale 7 timestamp sack-perm
}
chain input-new {
meta l4proto != tcp goto graceful-reject
tcp dport != { 22, 80, 443 } goto graceful-reject
tcp dport 22 ip saddr @ip-connlimit-ssh counter reject with tcp reset
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
@ -79,8 +83,6 @@ table inet filter {
}
chain input-established {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
ct mark 0x1 accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset
@ -90,8 +92,6 @@ table inet filter {
}
chain input-loopback {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
tcp flags != syn accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset

16
nftables-discuss.conf
View File

@ -55,8 +55,14 @@ table inet filter {
type filter hook input priority filter
policy drop
iif lo goto input-loopback
tcp dport { 22, 80, 443 } goto input-tcp-service
iif lo accept
meta l4proto { icmp, ipv6-icmp } accept
ct state vmap { new : goto graceful-reject, established : accept, related : accept }
}
chain input-tcp-service {
iif lo goto input-loopback
# for synproxy, SYN is untracked and first ACK is invalid which are handled via fallthrough
ct state vmap { new : goto input-new, established : goto input-established, related : accept }
@ -65,12 +71,10 @@ table inet filter {
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
tcp dport { 80, 443 } ip6 saddr and ffff:ffff:ffff:ffff:: @ip6-connlimit-main counter reject with tcp reset
tcp dport { 22, 80, 443 } synproxy mss 1460 wscale 7 timestamp sack-perm
synproxy mss 1460 wscale 7 timestamp sack-perm
}
chain input-new {
meta l4proto != tcp goto graceful-reject
tcp dport != { 22, 80, 443 } goto graceful-reject
tcp dport 22 ip saddr @ip-connlimit-ssh counter reject with tcp reset
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
@ -79,8 +83,6 @@ table inet filter {
}
chain input-established {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
ct mark 0x1 accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset
@ -90,8 +92,6 @@ table inet filter {
}
chain input-loopback {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
tcp flags != syn accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset

16
nftables-mail.conf
View File

@ -55,8 +55,14 @@ table inet filter {
type filter hook input priority filter
policy drop
iif lo goto input-loopback
tcp dport { 22, 25, 80, 443, 465, 993 } goto input-tcp-service
iif lo accept
meta l4proto { icmp, ipv6-icmp } accept
ct state vmap { new : goto graceful-reject, established : accept, related : accept }
}
chain input-tcp-service {
iif lo goto input-loopback
# for synproxy, SYN is untracked and first ACK is invalid which are handled via fallthrough
ct state vmap { new : goto input-new, established : goto input-established, related : accept }
@ -65,12 +71,10 @@ table inet filter {
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 25, 80, 443, 465, 993 } ip saddr @ip-connlimit-main counter reject with tcp reset
tcp dport { 25, 80, 443, 465, 993 } ip6 saddr and ffff:ffff:ffff:ffff:: @ip6-connlimit-main counter reject with tcp reset
tcp dport { 22, 25, 80, 443, 465, 993 } synproxy mss 1460 wscale 7 timestamp sack-perm
synproxy mss 1460 wscale 7 timestamp sack-perm
}
chain input-new {
meta l4proto != tcp goto graceful-reject
tcp dport != { 22, 25, 80, 443, 465, 993 } goto graceful-reject
tcp dport 22 ip saddr @ip-connlimit-ssh counter reject with tcp reset
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 25, 80, 443, 465, 993 } ip saddr @ip-connlimit-main counter reject with tcp reset
@ -79,8 +83,6 @@ table inet filter {
}
chain input-established {
meta l4proto != tcp accept
tcp dport != { 22, 25, 80, 443, 465, 993 } accept
ct mark 0x1 accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset
@ -90,8 +92,6 @@ table inet filter {
}
chain input-loopback {
meta l4proto != tcp accept
tcp dport != { 22, 25, 80, 443, 465, 993 } accept
tcp flags != syn accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset

16
nftables-matrix.conf
View File

@ -55,8 +55,14 @@ table inet filter {
type filter hook input priority filter
policy drop
iif lo goto input-loopback
tcp dport { 22, 80, 443 } goto input-tcp-service
iif lo accept
meta l4proto { icmp, ipv6-icmp } accept
ct state vmap { new : goto graceful-reject, established : accept, related : accept }
}
chain input-tcp-service {
iif lo goto input-loopback
# for synproxy, SYN is untracked and first ACK is invalid which are handled via fallthrough
ct state vmap { new : goto input-new, established : goto input-established, related : accept }
@ -65,12 +71,10 @@ table inet filter {
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
tcp dport { 80, 443 } ip6 saddr and ffff:ffff:ffff:ffff:: @ip6-connlimit-main counter reject with tcp reset
tcp dport { 22, 80, 443 } synproxy mss 1460 wscale 7 timestamp sack-perm
synproxy mss 1460 wscale 7 timestamp sack-perm
}
chain input-new {
meta l4proto != tcp goto graceful-reject
tcp dport != { 22, 80, 443 } goto graceful-reject
tcp dport 22 ip saddr @ip-connlimit-ssh counter reject with tcp reset
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
@ -79,8 +83,6 @@ table inet filter {
}
chain input-established {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
ct mark 0x1 accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset
@ -90,8 +92,6 @@ table inet filter {
}
chain input-loopback {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
tcp flags != syn accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset

16
nftables-network.conf
View File

@ -58,9 +58,15 @@ table inet filter {
type filter hook input priority filter
policy drop
iif lo goto input-loopback
tcp dport { 22, 80, 443, 7275 } goto input-tcp-service
iif lo accept
udp dport 123 accept
meta l4proto { icmp, ipv6-icmp } accept
ct state vmap { new : goto graceful-reject, established : accept, related : accept }
}
chain input-tcp-service {
iif lo goto input-loopback
# for synproxy, SYN is untracked and first ACK is invalid which are handled via fallthrough
ct state vmap { new : goto input-new, established : goto input-established, related : accept }
@ -69,12 +75,10 @@ table inet filter {
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443, 7275 } ip saddr @ip-connlimit-main counter reject with tcp reset
tcp dport { 80, 443, 7275 } ip6 saddr and ffff:ffff:ffff:ffff:: @ip6-connlimit-main counter reject with tcp reset
tcp dport { 22, 80, 443, 7275 } synproxy mss 1460 wscale 7 timestamp sack-perm
synproxy mss 1460 wscale 7 timestamp sack-perm
}
chain input-new {
meta l4proto != tcp goto graceful-reject
tcp dport != { 22, 80, 443, 7275 } goto graceful-reject
tcp dport 22 ip saddr @ip-connlimit-ssh counter reject with tcp reset
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443, 7275 } ip saddr @ip-connlimit-main counter reject with tcp reset
@ -83,8 +87,6 @@ table inet filter {
}
chain input-established {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443, 7275 } accept
ct mark 0x1 accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset
@ -94,8 +96,6 @@ table inet filter {
}
chain input-loopback {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443, 7275 } accept
tcp flags != syn accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset

16
nftables-ns1.conf
View File

@ -57,9 +57,15 @@ table inet filter {
type filter hook input priority filter
policy drop
iif lo goto input-loopback
tcp dport { 22, 53, 80, 443, 853 } goto input-tcp-service
iif lo accept
udp dport 53 accept
meta l4proto { icmp, ipv6-icmp } accept
ct state vmap { new : goto graceful-reject, established : accept, related : accept }
}
chain input-tcp-service {
iif lo goto input-loopback
# for synproxy, SYN is untracked and first ACK is invalid which are handled via fallthrough
ct state vmap { new : goto input-new, established : goto input-established, related : accept }
@ -68,12 +74,10 @@ table inet filter {
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 53, 80, 443, 853 } ip saddr @ip-connlimit-main counter reject with tcp reset
tcp dport { 53, 80, 443, 853 } ip6 saddr and ffff:ffff:ffff:ffff:: @ip6-connlimit-main counter reject with tcp reset
tcp dport { 22, 53, 80, 443, 853 } synproxy mss 1460 wscale 7 timestamp sack-perm
synproxy mss 1460 wscale 7 timestamp sack-perm
}
chain input-new {
meta l4proto != tcp goto graceful-reject
tcp dport != { 22, 53, 80, 443, 853 } goto graceful-reject
tcp dport 22 ip saddr @ip-connlimit-ssh counter reject with tcp reset
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 53, 80, 443, 853 } ip saddr @ip-connlimit-main counter reject with tcp reset
@ -82,8 +86,6 @@ table inet filter {
}
chain input-established {
meta l4proto != tcp accept
tcp dport != { 22, 53, 80, 443, 853 } accept
ct mark 0x1 accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset
@ -93,8 +95,6 @@ table inet filter {
}
chain input-loopback {
meta l4proto != tcp accept
tcp dport != { 22, 53, 80, 443, 853 } accept
tcp flags != syn accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset

16
nftables-ns2.conf
View File

@ -62,9 +62,15 @@ table inet filter {
type filter hook input priority filter
policy drop
iif lo goto input-loopback
tcp dport { 22, 53, 80, 443, 853 } goto input-tcp-service
iif lo accept
udp dport 53 accept
meta l4proto { icmp, ipv6-icmp } accept
ct state vmap { new : goto graceful-reject, established : accept, related : accept }
}
chain input-tcp-service {
iif lo goto input-loopback
# for synproxy, SYN is untracked and first ACK is invalid which are handled via fallthrough
ct state vmap { new : goto input-new, established : goto input-established, related : accept }
@ -73,12 +79,10 @@ table inet filter {
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 53, 80, 443, 853 } ip saddr @ip-connlimit-main counter reject with tcp reset
tcp dport { 53, 80, 443, 853 } ip6 saddr and ffff:ffff:ffff:ffff:: @ip6-connlimit-main counter reject with tcp reset
tcp dport { 22, 53, 80, 443, 853 } synproxy mss 1460 wscale 7 timestamp sack-perm
synproxy mss 1460 wscale 7 timestamp sack-perm
}
chain input-new {
meta l4proto != tcp goto graceful-reject
tcp dport != { 22, 53, 80, 443, 853 } goto graceful-reject
tcp dport 22 ip saddr @ip-connlimit-ssh counter reject with tcp reset
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 53, 80, 443, 853 } ip saddr @ip-connlimit-main counter reject with tcp reset
@ -87,8 +91,6 @@ table inet filter {
}
chain input-established {
meta l4proto != tcp accept
tcp dport != { 22, 53, 80, 443, 853 } accept
ct mark 0x1 accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset
@ -98,8 +100,6 @@ table inet filter {
}
chain input-loopback {
meta l4proto != tcp accept
tcp dport != { 22, 53, 80, 443, 853 } accept
tcp flags != syn accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset

16
nftables-social.conf
View File

@ -55,8 +55,14 @@ table inet filter {
type filter hook input priority filter
policy drop
iif lo goto input-loopback
tcp dport { 22, 80, 443 } goto input-tcp-service
iif lo accept
meta l4proto { icmp, ipv6-icmp } accept
ct state vmap { new : goto graceful-reject, established : accept, related : accept }
}
chain input-tcp-service {
iif lo goto input-loopback
# for synproxy, SYN is untracked and first ACK is invalid which are handled via fallthrough
ct state vmap { new : goto input-new, established : goto input-established, related : accept }
@ -65,12 +71,10 @@ table inet filter {
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
tcp dport { 80, 443 } ip6 saddr and ffff:ffff:ffff:ffff:: @ip6-connlimit-main counter reject with tcp reset
tcp dport { 22, 80, 443 } synproxy mss 1460 wscale 7 timestamp sack-perm
synproxy mss 1460 wscale 7 timestamp sack-perm
}
chain input-new {
meta l4proto != tcp goto graceful-reject
tcp dport != { 22, 80, 443 } goto graceful-reject
tcp dport 22 ip saddr @ip-connlimit-ssh counter reject with tcp reset
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
@ -79,8 +83,6 @@ table inet filter {
}
chain input-established {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
ct mark 0x1 accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset
@ -90,8 +92,6 @@ table inet filter {
}
chain input-loopback {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
tcp flags != syn accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset

16
nftables-web.conf
View File

@ -59,8 +59,14 @@ table inet filter {
type filter hook input priority filter
policy drop
iif lo goto input-loopback
tcp dport { 22, 80, 443 } goto input-tcp-service
iif lo accept
meta l4proto { icmp, ipv6-icmp } accept
ct state vmap { new : goto graceful-reject, established : accept, related : accept }
}
chain input-tcp-service {
iif lo goto input-loopback
# for synproxy, SYN is untracked and first ACK is invalid which are handled via fallthrough
ct state vmap { new : goto input-new, established : goto input-established, related : accept }
@ -69,12 +75,10 @@ table inet filter {
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
tcp dport { 80, 443 } ip6 saddr and ffff:ffff:ffff:ffff:: @ip6-connlimit-main counter reject with tcp reset
tcp dport { 22, 80, 443 } synproxy mss 1460 wscale 7 timestamp sack-perm
synproxy mss 1460 wscale 7 timestamp sack-perm
}
chain input-new {
meta l4proto != tcp goto graceful-reject
tcp dport != { 22, 80, 443 } goto graceful-reject
tcp dport 22 ip saddr @ip-connlimit-ssh counter reject with tcp reset
tcp dport 22 ip6 saddr and ffff:ffff:ffff:ffff:ffff:: @ip6-connlimit-ssh counter reject with tcp reset
tcp dport { 80, 443 } ip saddr @ip-connlimit-main counter reject with tcp reset
@ -83,8 +87,6 @@ table inet filter {
}
chain input-established {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
ct mark 0x1 accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset
@ -94,8 +96,6 @@ table inet filter {
}
chain input-loopback {
meta l4proto != tcp accept
tcp dport != { 22, 80, 443 } accept
tcp flags != syn accept
tcp dport 22 ip saddr != $ip-allowlist-ssh add @ip-connlimit-ssh { ip saddr ct count over 1 } counter reject with tcp reset
tcp dport 22 ip6 saddr != $ip6-allowlist-ssh add @ip6-connlimit-ssh { ip6 saddr and ffff:ffff:ffff:ffff:ffff:: ct count over 1 } counter reject with tcp reset