From 7f1abe50ce0989d96c3d275a4d0481962848714f Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Thu, 18 Feb 2016 00:50:10 +0100
Subject: [PATCH] xu-qemu0 host: setup iptables
---
tv/2configs/xu-qemu0.nix | 18 ++++++++++++------
tv/3modules/iptables.nix | 22 ++++++++++++++++++++++
2 files changed, 34 insertions(+), 6 deletions(-)
diff --git a/tv/2configs/xu-qemu0.nix b/tv/2configs/xu-qemu0.nix
index 2b67a8b84..5be4899c8 100644
--- a/tv/2configs/xu-qemu0.nix
+++ b/tv/2configs/xu-qemu0.nix
@@ -15,17 +15,23 @@ in
#
# make [install] system=xu-qemu0 target_host=10.56.0.101
-# TODO iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
-# TODO iptables -A FORWARD -i qemubr0 -s 10.56.0.1/24 -m conntrack --ctstate NEW -j ACCEPT
-# TODO iptables -A POSTROUTING -t nat -j MASQUERADE
-# TODO iptables -A INPUT -i qemubr0 -p udp -m udp --dport bootps -j ACCEPT
-# TODO iptables -A INPUT -i qemubr0 -p udp -m udp --dport domain -j ACCEPT
-
with config.krebs.lib;
{
networking.dhcpcd.denyInterfaces = [ "qemubr0" ];
+ tv.iptables.extra = {
+ nat.POSTROUTING = ["-j MASQUERADE"];
+ filter.FORWARD = [
+ "-m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT"
+ "-i qemubr0 -s 10.56.0.1/24 -m conntrack --ctstate NEW -j ACCEPT"
+ ];
+ filter.INPUT = [
+ "-i qemubr0 -p udp -m udp --dport bootps -j ACCEPT"
+ "-i qemubr0 -p udp -m udp --dport domain -j ACCEPT"
+ ];
+ };
+
systemd.network.enable = true;
systemd.services.systemd-networkd-wait-online.enable = false;
diff --git a/tv/3modules/iptables.nix b/tv/3modules/iptables.nix
index c0fd7ec12..c0e71f24d 100644
--- a/tv/3modules/iptables.nix
+++ b/tv/3modules/iptables.nix
@@ -26,6 +26,21 @@ let
type = with types; listOf (either int str);
default = [];
};
+
+ extra = {
+ nat.POSTROUTING = mkOption {
+ type = with types; listOf str;
+ default = [];
+ };
+ filter.FORWARD = mkOption {
+ type = with types; listOf str;
+ default = [];
+ };
+ filter.INPUT = mkOption {
+ type = with types; listOf str;
+ default = [];
+ };
+ };
};
imp = {
@@ -57,6 +72,11 @@ let
};
};
+ formatTable = table:
+ (concatStringsSep "\n"
+ (mapAttrsToList
+ (chain: concatMapStringsSep "\n" (rule: "-A ${chain} ${rule}"))
+ table));
rules = iptables-version: let
accept-echo-request = {
@@ -79,6 +99,7 @@ let
${concatMapStringsSep "\n" (rule: "-A OUTPUT ${rule}") [
"-o lo -p tcp -m tcp --dport 11423 -j REDIRECT --to-ports 22"
]}
+ ${formatTable cfg.extra.nat}
COMMIT
*filter
:INPUT DROP [0:0]
@@ -94,6 +115,7 @@ let
++ map accept-new-tcp (unique (map toString cfg.input-internet-accept-new-tcp))
++ ["-i retiolum -j Retiolum"]
)}
+ ${formatTable cfg.extra.filter}
${concatMapStringsSep "\n" (rule: "-A Retiolum ${rule}") ([]
++ optional (cfg.accept-echo-request == "retiolum") accept-echo-request
++ map accept-new-tcp (unique (map toString cfg.input-retiolum-accept-new-tcp))