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ssh: add reverse ssh giving access to losurdo from mermet
[sourcephile-nix.git] / machines / mermet / networking.nix
1 { pkgs, lib, config, machineName, ipv4, machines, ... }:
2 with builtins;
3 let
4 inherit (builtins.extraBuiltins) pass-to-file;
5 inherit (config) networking users;
6 netIPv4 = ipv4;
7 netIPv4Gateway = "80.67.180.134";
8 #netIPv6 = "2001:912:400:104::35";
9 #netIPv6Gateway = "2001:912:400:104::1";
10 lanIPv4 = "192.168.1.214";
11 lanNet = "192.168.1.0/24";
12 lanIPv4Gateway = "192.168.1.1";
13 in
14 {
15 imports = [
16 networking/nftables.nix
17 networking/ssh.nix
18 ];
19 boot.initrd.network = {
20 enable = true;
21 ssh = {
22 enable = true;
23 # To prevent ssh from freaking out because a different host key is used,
24 # a different port for dropbear is useful
25 # (assuming the same host has also a normal sshd running)
26 port = 2222;
27 authorizedKeys = users.users.root.openssh.authorizedKeys.keys;
28 };
29 # This will automatically load the zfs password prompt on login
30 # and kill the other prompt so boot can continue
31 # The pkill zfs kills the zfs load-key from the console
32 # allowing the boot to continue.
33 postCommands = ''
34 echo >>/root/.profile "zfs load-key -a && pkill zfs"
35 '';
36 };
37
38 /* WARNING: using ipconfig (the ip= kernel parameter) IS NOT RELIABLE:
39 a 91.216.110.35/32 becomes a 91.216.110.35/8
40 boot.kernelParams = map
41 (ip: "ip=${ip.clientIP}:${ip.serverIP}:${ip.gatewayIP}:${ip.netmask}:${ip.hostname}:${ip.device}:${ip.autoconf}")
42 [ { clientIP = netIPv4; serverIP = "";
43 gatewayIP = networking.defaultGateway.address;
44 netmask = "255.255.255.255";
45 hostname = ""; device = networking.defaultGateway.interface;
46 autoconf = "off";
47 }
48 { clientIP = lanIPv4; serverIP = "";
49 gatewayIP = "";
50 netmask = "255.255.255.0";
51 hostname = ""; device = "enp2s0";
52 autoconf = "off";
53 }
54 ];
55 */
56 /* DIY network config, but a right one */
57 boot.initrd.preLVMCommands = ''
58 set -x
59
60 # IPv4 net
61 ip link set enp1s0 up
62 ip address add ${netIPv4}/32 dev enp1s0
63 ip route add ${netIPv4Gateway} dev enp1s0
64 ip route add default via ${netIPv4Gateway} dev enp1s0
65
66 # IPv4 lan
67 ip link set enp2s0 up
68 ip address add ${lanIPv4}/32 dev enp2s0
69 ip route add ${lanIPv4Gateway} dev enp2s0
70 ip route add ${lanNet} dev enp2s0 src ${lanIPv4} proto kernel
71 # NOTE: ${lanIPv4}/24 would not work with initrd's ip, hence ${lanNet}
72
73 # IPv6 net
74 #ip -6 address add ''${netIPv6} dev enp1s0
75 #ip -6 route add ''${netIPv6Gateway} dev enp1s0
76 #ip -6 route add default via ''${netIPv6Gateway} dev enp1s0
77
78 ip -4 address
79 ip -4 route
80 #ip -6 address
81 #ip -6 route
82
83 set +x
84
85 # Since boot.initrd.network's preLVMCommands won't set hasNetwork=1
86 # we have to run the postCommands ourselves.
87 ${config.boot.initrd.network.postCommands}
88 '';
89
90 # Workaround https://github.com/NixOS/nixpkgs/issues/56822
91 #boot.initrd.kernelModules = [ "ipv6" ];
92
93 # Useless without an out-of-band access, and unsecure
94 # (though / may still be encrypted at this point).
95 # boot.kernelParams = [ "boot.shell_on_fail" ];
96
97 # Disable IPv6 entirely until it's available
98 boot.kernel.sysctl = {
99 "net.ipv6.conf.enp1s0.disable_ipv6" = 1;
100 };
101
102 services.knot.extraConfig = lib.mkBefore ''
103 server:
104 listen: ${netIPv4}@53
105 #listen: ::@53
106 '';
107
108 networking = {
109 hostName = machineName;
110 domain = "sourcephile.fr";
111
112 useDHCP = false;
113 defaultGateway = {
114 address = netIPv4Gateway;
115 interface = "enp1s0";
116 };
117 /*
118 defaultGateway6 = {
119 address = netIPv6Gateway;
120 interface = "enp1s0";
121 };
122 */
123 #nameservers = [ ];
124 nftables.ruleset = ''
125 add rule inet filter input iifname "enp1s0" goto net2fw
126 add rule inet filter output oifname "enp1s0" goto fw2net
127 add rule inet filter fw2net ip daddr ${machines.losurdo.extraArgs.ipv4} counter accept comment "losurdo"
128
129 add rule inet filter input iifname "enp2s0" goto lan2fw
130 add rule inet filter output oifname "enp2s0" goto fw2lan
131 '';
132 interfaces.enp1s0 = {
133 useDHCP = false;
134 ipv4.addresses = [ { address = netIPv4; prefixLength = 32; } ];
135 ipv4.routes = [ { address = networking.defaultGateway.address; prefixLength = 32; } ];
136
137 /*
138 ipv6.addresses = [ { address = netIPv6; prefixLength = 64; }
139 { address = "fe80::1"; prefixLength = 10; }
140 ];
141 ipv6.routes = [ { address = networking.defaultGateway6.address; prefixLength = 64; } ];
142 */
143 };
144 interfaces.enp2s0 = {
145 useDHCP = false;
146 ipv4.addresses = [ { address = lanIPv4; prefixLength = 24; } ];
147 /*
148 # FIXME: remove this /1 hack when the machine will be racked at PTT
149 ipv4.routes = [ { address = "0.0.0.0"; prefixLength = 1; via = "192.168.1.1"; }
150 { address = "128.0.0.0"; prefixLength = 1; via = "192.168.1.1"; }
151 ];
152 */
153 /*
154 ipv6.addresses = [ { address = "fe80::1"; prefixLength = 10; } ];
155 ipv6.routes = [ ];
156 */
157 };
158 interfaces.enp3s0 = {
159 useDHCP = false;
160 };
161 };
162 }