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vpn: allow disabling vpn config

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This commit is contained in:
Leonardo Eugênio 2023-06-02 10:40:51 -03:00
parent 10380a53b5
commit 2dd9bea706
3 changed files with 83 additions and 72 deletions
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146
system/vpn.nix
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@ -1,83 +1,93 @@
{ pkgs, ... }: {
networking.firewall.enable = false;
{ pkgs, lib, config, ... }:
let
cfg = config.services.vpn;
in
{
options.services.vpn = {
enable = lib.mkEnableOption "Whether vpn should be enabled";
};
services.mullvad-vpn.enable = true;
services.mullvad-vpn.package = pkgs.mullvad-vpn;
config = lib.mkIf cfg.enable {
networking.firewall.enable = false;
networking.nftables = {
enable = true;
ruleset = ''
table inet allowAll {
chain allowIncoming {
type filter hook input priority -100; policy accept;
tcp dport 0-10999 ct mark set 0x00000f41 meta mark set 0x6d6f6c65
}
chain allowOutgoing {
type route hook output priority -100; policy accept;
tcp sport 0-10999 ct mark set 0x00000f41 meta mark set 0x6d6f6c65
}
}
services.mullvad-vpn.enable = true;
services.mullvad-vpn.package = pkgs.mullvad-vpn;
######################################
# _ _ #
# __| | ___ ___| | _____ _ __ #
# / _` |/ _ \ / __| |/ / _ \ '__| #
# | (_| | (_) | (__| < __/ | #
# \__,_|\___/ \___|_|\_\___|_| #
# #
######################################
networking.nftables = {
enable = true;
ruleset = ''
table inet allowAll {
chain allowIncoming {
type filter hook input priority -100; policy accept;
tcp dport 0-10999 ct mark set 0x00000f41 meta mark set 0x6d6f6c65
}
chain allowOutgoing {
type route hook output priority -100; policy accept;
tcp sport 0-10999 ct mark set 0x00000f41 meta mark set 0x6d6f6c65
}
}
# This gets sent to the vpn so it's safe
######################################
# _ _ #
# __| | ___ ___| | _____ _ __ #
# / _` |/ _ \ / __| |/ / _ \ '__| #
# | (_| | (_) | (__| < __/ | #
# \__,_|\___/ \___|_|\_\___|_| #
# #
######################################
table ip nat {
chain DOCKER {
iifname "docker0" counter packets 0 bytes 0 return
}
# This gets sent to the vpn so it's safe
chain POSTROUTING {
type nat hook postrouting priority srcnat; policy accept;
oifname != "docker0" ip saddr 172.17.0.0/16 counter packets 0 bytes 0 masquerade
}
table ip nat {
chain DOCKER {
iifname "docker0" counter packets 0 bytes 0 return
}
chain PREROUTING {
type nat hook prerouting priority dstnat; policy accept;
fib daddr type local counter packets 5 bytes 252 jump DOCKER
}
chain POSTROUTING {
type nat hook postrouting priority srcnat; policy accept;
oifname != "docker0" ip saddr 172.17.0.0/16 counter packets 0 bytes 0 masquerade
}
chain OUTPUT {
type nat hook output priority -100; policy accept;
ip daddr != 127.0.0.0/8 fib daddr type local counter packets 0 bytes 0 jump DOCKER
}
}
table ip filter {
chain DOCKER {
}
chain PREROUTING {
type nat hook prerouting priority dstnat; policy accept;
fib daddr type local counter packets 5 bytes 252 jump DOCKER
}
chain DOCKER-ISOLATION-STAGE-1 {
iifname "docker0" oifname != "docker0" counter packets 0 bytes 0 jump DOCKER-ISOLATION-STAGE-2
counter packets 0 bytes 0 return
}
chain OUTPUT {
type nat hook output priority -100; policy accept;
ip daddr != 127.0.0.0/8 fib daddr type local counter packets 0 bytes 0 jump DOCKER
}
}
table ip filter {
chain DOCKER {
}
chain DOCKER-ISOLATION-STAGE-2 {
oifname "docker0" counter packets 0 bytes 0 drop
counter packets 0 bytes 0 return
}
chain DOCKER-ISOLATION-STAGE-1 {
iifname "docker0" oifname != "docker0" counter packets 0 bytes 0 jump DOCKER-ISOLATION-STAGE-2
counter packets 0 bytes 0 return
}
chain FORWARD {
type filter hook forward priority filter; policy accept;
counter packets 0 bytes 0 jump DOCKER-USER
counter packets 0 bytes 0 jump DOCKER-ISOLATION-STAGE-1
oifname "docker0" ct state related,established counter packets 0 bytes 0 accept
oifname "docker0" counter packets 0 bytes 0 jump DOCKER
iifname "docker0" oifname != "docker0" counter packets 0 bytes 0 accept
iifname "docker0" oifname "docker0" counter packets 0 bytes 0 accept
}
chain DOCKER-ISOLATION-STAGE-2 {
oifname "docker0" counter packets 0 bytes 0 drop
counter packets 0 bytes 0 return
}
chain DOCKER-USER {
counter packets 0 bytes 0 return
}
}
chain FORWARD {
type filter hook forward priority filter; policy accept;
counter packets 0 bytes 0 jump DOCKER-USER
counter packets 0 bytes 0 jump DOCKER-ISOLATION-STAGE-1
oifname "docker0" ct state related,established counter packets 0 bytes 0 accept
oifname "docker0" counter packets 0 bytes 0 jump DOCKER
iifname "docker0" oifname != "docker0" counter packets 0 bytes 0 accept
iifname "docker0" oifname "docker0" counter packets 0 bytes 0 accept
}
'';
chain DOCKER-USER {
counter packets 0 bytes 0 return
}
}
'';
};
};
}