Test

nixos/hosts/osaka-vultr-01/default.nix

@@ -1,7 +1,7 @@
 { config, lib, pkgs, modulesPath, desktop, username, ... }: {
   imports = [ 
     ./disks.nix
-    ./xinetd.nix
+    ./firewall.nix
     ./wireguard.nix
   ];
   

nixos/hosts/osaka-vultr-01/firewall.nix

@@ -0,0 +1,116 @@
+{ config, lib, pkgs, ... }: {
+  networking.firewall.allowedUDPPorts = [
+    3478  # Headscale DERP UDP
+    10000 # Jitsi
+  ];
+  networking.firewall.allowedTCPPorts = [
+    80    # HTTP
+    443   # HTTPS
+    25    # SMTP  (explicit TLS => STARTTLS)
+    465   # ESMTP (implicit TLS)
+    587   # ESMTP (explicit TLS => STARTTLS)
+    143   # IMAP4 (explicit TLS => STARTTLS)
+    993   # IMAP4 (implicit TLS)
+    4190  # Sieve support
+    42420 # Vintage Story
+    25565 # Minecraft
+    1443  # Headscale DERP
+    4443  # jitsi-jvb
+    5222  # Jitsi
+    5347  # Jitsi
+    5280  # Jitsi
+  ];
+
+  networking.firewall.extraCommands     = '' 
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 80 -m conntrack --ctstate NEW -j ACCEPT
+    iptables -A FORWARD -i ens3 -o wireguard0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
+    iptables -A FORWARD -i wireguard0 -o ens3 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
+
+    # TCP PORTS ##################################################################################################
+    # PORT 80
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 80 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 80 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 80 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 443
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 443 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 443 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 443 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 25  
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 25 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 25 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 25 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 465 
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 465 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 465 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 465 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 587 
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 587 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 587 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 587 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 143 
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 143 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 143 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 143 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 993 
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 993 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 993 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 993 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 4190
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 4190 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 4190 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 4190 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 42420
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 42420 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 42420 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 42420 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 25565
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 25565 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 25565 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 25565 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 1443
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 1443 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 1443 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 1443 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 4443
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 4443 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 4443 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 4443 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 5222
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 5222 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 5222 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 5222 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 5347
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 5347 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 5347 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 5347 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # PORT 5280
+    iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 5280 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 5280 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 5280 -m conntrack --ctstate NEW -j ACCEPT
+    
+    # UDP PORTS ##################################################################################################
+    # PORT 10000
+    iptables -t nat -A PREROUTING -i ens3 -p udp --dport 10000 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p udp --dport 10000 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p udp --syn --dport 10000 -m conntrack --ctstate NEW -j ACCEPT
+            
+    # PORT 3478
+    iptables -t nat -A PREROUTING -i ens3 -p udp --dport 3478 -j DNAT --to-destination 10.100.0.2
+    iptables -t nat -A POSTROUTING -o wireguard0 -p udp --dport 3478 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    iptables -A FORWARD -i ens3 -o wireguard0 -p udp --syn --dport 3478 -m conntrack --ctstate NEW -j ACCEPT
+  '';
+}

nixos/hosts/osaka-vultr-01/xinetd.nix

@@ -22,12 +22,15 @@
   ];
 
   networking.firewall.extraCommands     = '' 
-     ${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to 64.176.54.57:80
+    ${pkgs.iptables}/bin/iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 80 -m conntrack --ctstate NEW -j ACCEPT
-     ${pkgs.iptables}/bin/iptables -t nat -A OUTPUT -d 10.100.0.2 -p tcp --dport 80 -j DNAT --to 64.176.54.57:80
+    ${pkgs.iptables}/bin/iptables -A FORWARD -i ens3 -o wireguard0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
-     ${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 443 -j DNAT --to 64.176.54.57:443
+    ${pkgs.iptables}/bin/iptables -A FORWARD -i wireguard0 -o ens3 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
-     ${pkgs.iptables}/bin/iptables -t nat -A OUTPUT -d 10.100.0.2 -p tcp --dport 443 -j DNAT --to 64.176.54.57:443
+    ${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 80 -j DNAT --to-destination 10.100.0.2
-     ${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -i eth0 -p udp --dport 10000 -j DNAT --to 64.176.54.57:10000
+    ${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 80 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
-     ${pkgs.iptables}/bin/iptables -t nat -A OUTPUT -d 10.100.0.2 -p udp --dport 10000 -j DNAT --to 64.176.54.57:10000
+    ${pkgs.iptables}/bin/iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 80 -m conntrack --ctstate NEW -j ACCEPT
+    ${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -i ens3 -p tcp --dport 443 -j DNAT --to-destination 10.100.0.2
+    ${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -o wireguard0 -p tcp --dport 443 -d 10.100.0.2 -j SNAT --to-source 10.100.0.1
+    ${pkgs.iptables}/bin/iptables -A FORWARD -i ens3 -o wireguard0 -p tcp --syn --dport 443 -m conntrack --ctstate NEW -j ACCEPT
   '';
 
   services.xinetd = {