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-rw-r--r--tv/3modules/iptables.nix40
1 files changed, 22 insertions, 18 deletions
diff --git a/tv/3modules/iptables.nix b/tv/3modules/iptables.nix
index cbf49f577..a4ebef44f 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 = [];
@@ -49,22 +54,27 @@ 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]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
- ${concatMapStringsSep "\n" (rule: "-A PREROUTING ${rule}") ([]
- ++ [
- "! -i retiolum -p tcp -m tcp --dport 22 -j REDIRECT --to-ports 0"
- "-p tcp -m tcp --dport 11423 -j REDIRECT --to-ports 22"
- ]
- )}
+ ${concatMapStringsSep "\n" (rule: "-A PREROUTING ${rule}") [
+ "! -i retiolum -p tcp -m tcp --dport 22 -j REDIRECT --to-ports 0"
+ "-p tcp -m tcp --dport 11423 -j REDIRECT --to-ports 22"
+ ]}
+ ${concatMapStringsSep "\n" (rule: "-A OUTPUT ${rule}") [
+ "-o lo -p tcp -m tcp --dport 11423 -j REDIRECT --to-ports 22"
+ ]}
COMMIT
*filter
:INPUT DROP [0:0]
@@ -76,18 +86,12 @@ 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 = [