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authorsinanmohd <sinan@sinanmohd.com>2024-06-12 15:33:37 +0530
committersinanmohd <sinan@sinanmohd.com>2024-06-12 15:38:39 +0530
commitd258d56ceec7a54ecec7736c0bc0244f1555f77f (patch)
treeda0a8f9aec64965dee3d7acbbb85b50f9768d991
parentb3f15be96cf5356914a24beaf1d430c2b5b387b7 (diff)
kay/router: perform mss clamping on ppp0
-rw-r--r--os/kay/modules/router.nix16
1 files changed, 10 insertions, 6 deletions
diff --git a/os/kay/modules/router.nix b/os/kay/modules/router.nix
index 2254c3b..45c9dff 100644
--- a/os/kay/modules/router.nix
+++ b/os/kay/modules/router.nix
@@ -1,15 +1,13 @@
-{ ... }:
+{ ... }: let
+ wanInterface = "ppp0";
-let
lanInterface = "enp0s20u1";
- wanInterface = "ppp0";
subnet = "10.0.0.0";
prefix = 24;
host = "10.0.0.1";
leaseRangeStart = "10.0.0.100";
leaseRangeEnd = "10.0.0.254";
-in
-{
+in {
imports = [
./wireguard.nix
./iperf3.nix
@@ -31,7 +29,13 @@ in
allowedUDPPorts = [ 53 67 ];
allowedTCPPorts = [ 53 ];
extraCommands = ''
- iptables -t nat -I POSTROUTING 1 -s ${subnet}/${toString prefix} -o ${wanInterface} -j MASQUERADE
+ iptables -t nat -I POSTROUTING 1 \
+ -s ${subnet}/${toString prefix} \
+ -o ${wanInterface} \
+ -j MASQUERADE
+ iptables -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN \
+ -o ${wanInterface} \
+ -j TCPMSS --clamp-mss-to-pmtu
'';
};
};