parent
ed16802776
commit
a3db616b2a
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@ -0,0 +1,216 @@
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{ config, pkgs, lib, ... }:
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let
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address4 = "172.22.99.253";
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address6 = "fe80::deca:fbad";
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neighbors = import ./neighbors.nix;
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makeBgpNeighbor = { name, asn, description ? "Someone", address, interface ? name, ... }: ''
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neighbor ${address} remote-as ${builtins.toString asn}
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neighbor ${address} peer-group dn
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neighbor ${address} interface ${interface}
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neighbor ${address} description ${description}
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'';
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bgpNeighbors =
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builtins.attrValues (builtins.mapAttrs (name: conf:
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let
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makeNeighbor =
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address:
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makeBgpNeighbor (conf // { inherit name address; });
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in
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# Bird peers don't do IPv6 routes over IPv4, so they get
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# additional config:
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let
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neighbor4 =
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if conf ? address4
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then makeNeighbor conf.address4
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else "";
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neighbor6 =
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if conf ? address6
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then makeNeighbor conf.address6
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else "";
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in "${neighbor4}${neighbor6}"
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) neighbors);
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bgpNeighbors6 =
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builtins.attrValues (builtins.mapAttrs (name: conf:
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if conf ? address6
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then ''
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neighbor ${conf.address6} peer-group dn
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neighbor ${conf.address6} route-map ${name}-next-hop in
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''
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else ""
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) neighbors);
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common = ''
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service advanced-vty
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line vty
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ip prefix-list dn42-in seq 10 permit 172.22.0.0/15 ge 22 le 28
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ip prefix-list dn42-in seq 12 permit 172.20.0.0/16 ge 21 le 28
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ip prefix-list dn42-in seq 15 permit 172.22.0.0/23 ge 32
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ip prefix-list dn42-in seq 16 permit 172.23.0.0/24 ge 32
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ip prefix-list dn42-in seq 20 deny 10.10.10.0/24 le 32
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ip prefix-list dn42-in seq 21 permit 10.0.0.0/8 ge 12 le 28
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ip prefix-list dn42-in seq 30 permit 172.31.0.0/16 ge 22 le 28
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ip prefix-list dn42-in seq 1000 deny 0.0.0.0/0 le 32
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! ipv6 prefix-list def seq 5 permit 2000::/3 ge 32
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ipv6 prefix-list def seq 10 permit fd00::/8 ge 9 le 64
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ipv6 prefix-list def seq 1000 deny ::/0 le 128
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'';
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in {
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imports =
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[ ../../../lib/lxc-container.nix
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../../../lib/shared.nix
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../../../lib/admins.nix
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];
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networking.hostName = "dn42";
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networking.defaultGateway = "172.22.99.4";
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networking.nameservers = [ "172.20.72.6" "172.20.72.10" ];
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networking.interfaces.eth0 = {
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ipv4.addresses = [ {
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address = address4;
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prefixLength = 24;
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} ];
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};
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environment.systemPackages = with pkgs; [
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vim
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# for `vtysh`
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quagga
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];
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# SSH for nixops
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services.openssh.enable = true;
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services.openssh.permitRootLogin = "yes";
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# No Firewalling!
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networking.firewall.enable = false;
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networking.useDHCP = false;
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services.quagga = {
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zebra = {
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config = ''
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ip forwarding
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ipv6 forwarding
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interface eth0
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ipv6 address fe80::a800:42ff:fe7a:3246/64
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ipv6 address 2a02:8106:208:5201::ffff/64
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ipv6 address fd23:42:c3d2:523::ffff/64
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ipv6 nd prefix fd23:42:c3d2:523::/64 60 20
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ipv6 nd ra-interval 5
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no ipv6 nd suppress-ra
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ip route 0.0.0.0/0 172.22.99.4
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ip route 10.0.0.0/8 Null0
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ip route 172.16.0.0/12 Null0
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ip route 192.168.0.0/16 Null0
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ipv6 route 2000::/3 2a02:8106:208:5201::c3d2:4 eth0
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${common}
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'';
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};
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bgp = {
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enable = true;
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config = ''
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router bgp 64699
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bgp router-id ${address4}
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network 172.22.99.0/24
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neighbor dn peer-group
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neighbor dn soft-reconfiguration inbound
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neighbor dn prefix-list dn42-in in
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${builtins.concatStringsSep "\n" bgpNeighbors}
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address-family ipv6
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network fd23:42:c3d2:500::/56
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neighbor dn activate
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neighbor dn soft-reconfiguration inbound
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neighbor dn prefix-list def in
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${builtins.concatStringsSep "\n" bgpNeighbors6}
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exit-address-family
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exit
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route-map set-next-hop permit 10
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set ip next-hop 172.22.99.253
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route-map set-next-hop6 permit 10
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set ipv6 next-hop global 2001:6f8:1194:c3d2::ffff
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set ipv6 next-hop local fe80::a800:42ff:fe7a:3246
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route-map set-next-hop-zw-server1 permit 10
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set ip next-hop 172.22.99.250
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route-map zw-next-hop permit 10
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set ipv6 next-hop local fe80::814:48ff:fe01:2201
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set ipv6 next-hop local fe80::814:48ff:fe01:2201
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${common}
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'';
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};
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ospf = {
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enable = true;
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config = ''
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router ospf
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ospf router-id ${address4}
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redistribute connected
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redistribute static
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network 172.22.99.0/24 area 0.0.0.0
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area 0.0.0.0 authentication message-digest
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default-metric 1
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interface eth0
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ip ospf message-digest-key 1 md5 ${builtins.readFile ../../../secrets/shared/ospf/message-digest-key.nix}
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${common}
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'';
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};
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ospf6 = {
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enable = true;
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config = ''
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router ospf6
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router-id 172.22.99.253
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redistribute connected
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area 0.0.0.0 range 2001:6f8:1194:c3d2::/64
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interface eth0 area 0.0.0.0
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interface eth0
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ipv6 ospf6 cost 1
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ipv6 ospf6 network broadcast
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${common}
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'';
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};
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};
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services.openvpn =
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let
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openvpnNeighbors = lib.filterAttrs (_: conf: conf ? openvpn) neighbors;
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keyfile = name:
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builtins.toFile "${name}.key"
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(builtins.readFile (../../../secrets/hosts/dn42/openvpn + "/${name}.key"));
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mkServer = name: conf: {
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config = ''
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dev ${name}
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dev-type tun
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ifconfig ${address4} ${conf.address4}
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user nobody
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group nogroup
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persist-tun
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persist-key
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ping 30
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ping-restart 45
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verb 1
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${conf.openvpn}
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secret ${keyfile name}
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'';
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up = ''
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${pkgs.iproute}/bin/ip a a fe80::deca:fbad/64 dev $1
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'';
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};
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in {
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servers = builtins.mapAttrs (name: conf: mkServer name conf) openvpnNeighbors;
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};
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# This value determines the NixOS release with which your system is to be
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# compatible, in order to avoid breaking some software such as database
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# servers. You should change this only after NixOS release notes say you
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# should.
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system.stateVersion = "18.09"; # Did you read the comment?
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}
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