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authortv <tv@krebsco.de>2016-02-07 03:09:14 +0100
committertv <tv@krebsco.de>2016-02-07 03:09:14 +0100
commit01a0f8a7ea7ed86d10bde3d9d4e42ac97e6359b0 (patch)
tree4a2e040621e13a87456046bbddec25ac9a76520c /tv/3modules
parent2ac82761cac283ccd7bce2aa5597c8bb44395ace (diff)
tv: accept internet echo requests
Diffstat (limited to 'tv/3modules')
-rw-r--r--tv/3modules/iptables.nix27
1 files changed, 15 insertions, 12 deletions
diff --git a/tv/3modules/iptables.nix b/tv/3modules/iptables.nix
index cbf49f5..9d5b5d0 100644
--- a/tv/3modules/iptables.nix
+++ b/tv/3modules/iptables.nix
@@ -13,6 +13,11 @@ let
api = {
enable = mkEnableOption "tv.iptables";
+ accept-echo-request = mkOption {
+ type = with types; nullOr (enum ["internet" "retiolum"]);
+ default = "retiolum";
+ };
+
input-internet-accept-new-tcp = mkOption {
type = with types; listOf (either int str);
default = [];
@@ -49,10 +54,14 @@ let
};
- accept-new-tcp = port:
- "-p tcp -m tcp --dport ${port} -m conntrack --ctstate NEW -j ACCEPT";
-
- rules = iptables-version:
+ rules = iptables-version: let
+ accept-echo-request = {
+ ip4tables = "-p icmp -m icmp --icmp-type echo-request -j ACCEPT";
+ ip6tables = "-p ipv6-icmp -m icmp6 --icmpv6-type echo-request -j ACCEPT";
+ }."ip${toString iptables-version}tables";
+ accept-new-tcp = port:
+ "-p tcp -m tcp --dport ${port} -m conntrack --ctstate NEW -j ACCEPT";
+ in
pkgs.writeText "tv-iptables-rules${toString iptables-version}" ''
*nat
:PREROUTING ACCEPT [0:0]
@@ -76,18 +85,12 @@ let
"-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"
"-i lo -j ACCEPT"
]
+ ++ optional (cfg.accept-echo-request == "internet") accept-echo-request
++ map accept-new-tcp (unique (map toString cfg.input-internet-accept-new-tcp))
++ ["-i retiolum -j Retiolum"]
)}
${concatMapStringsSep "\n" (rule: "-A Retiolum ${rule}") ([]
- ++ {
- ip4tables = [
- "-p icmp -m icmp --icmp-type echo-request -j ACCEPT"
- ];
- ip6tables = [
- "-p ipv6-icmp -m icmp6 --icmpv6-type echo-request -j ACCEPT"
- ];
- }."ip${toString iptables-version}tables"
+ ++ optional (cfg.accept-echo-request == "retiolum") accept-echo-request
++ map accept-new-tcp (unique (map toString cfg.input-retiolum-accept-new-tcp))
++ {
ip4tables = [