systems|homes: add bard

Add bard system

Signed-off-by: Kenny Ballou <kb@devnulllabs.io>

1 files changed, 56 insertions, 0 deletions

diff --git a/systems/bard/nftables-rules.nft b/systems/bard/nftables-rules.nft
new file mode 100644
index 00000000..46c2ae2a
--- /dev/null
+++ b/systems/bard/nftables-rules.nft
@@ -0,0 +1,56 @@
+table inet filter {
+    chain input {
+        type filter hook input priority 0; policy drop;
+        ct state invalid counter drop comment "drop invalid packets"
+        ct state established,related counter accept comment "accept related connections"
+        iif lo counter accept
+        iif != lo ip daddr 127.0.0.1/8 counter drop
+        iif != lo ip6 daddr ::1/128 counter drop
+        ip protocol icmp counter accept
+        ip6 nexthdr ipv6-icmp counter accept
+        udp dport domain ip saddr 172.16.0.0/12 counter accept
+        tcp dport ssh counter accept
+        tcp dport 3000 ip saddr 127.0.0.1/8 counter accept
+        tcp dport 8000 ip saddr 127.0.0.1/8 counter accept
+        tcp dport 8080 ip saddr { 127.0.0.1/8, 10.0.0.0/8 } counter accept
+        tcp dport http-alt ip saddr { 127.0.0.1/8, 10.0.0.0/8 } counter accept
+        counter
+    }
+
+    chain forward {
+        type filter hook forward priority 0; policy drop;
+        ct state established,related counter accept
+        counter
+    }
+
+    chain output {
+        type filter hook output priority 0; policy drop;
+        ct state established,related counter accept
+        icmp type echo-request counter accept
+        icmp type echo-reply counter accept
+        ip daddr 127.0.0.0/8 counter accept
+        ip6 daddr ::1 counter accept
+        udp dport domain counter accept
+        tcp dport 853 counter accept comment "DNS over TLS"
+        udp dport 853 counter accept comment "DNS over TLS"
+        tcp dport http counter accept
+        tcp dport https counter accept
+        udp dport https counter accept
+        tcp dport ssh counter accept
+        tcp dport bootps counter accept
+        udp dport bootps counter accept
+        tcp dport ntp counter accept
+        udp dport ntp counter accept
+        tcp dport nntps counter accept
+        udp dport nntps counter accept
+        tcp dport rsync counter accept
+        udp dport rsync counter accept
+        tcp dport 8000 counter accept
+        tcp dport http-alt counter accept
+        tcp dport 2049 ip daddr 10.0.0.0/8 counter accept comment "NFS"
+        udp dport 2049 ip daddr 10.0.0.0/8 counter accept comment "NFS"
+        tcp dport 20048 ip daddr 10.0.0.0/8 counter accept comment "NFS"
+        udp dport 20048 ip daddr 10.0.0.0/8 counter accept comment "NFS"
+        counter
+    }
+}