nixpkgs/tests/nat.nix
Eelco Dolstra 9bf4ac079e * Add a module for doing Network Address Translation.
svn path=/nixos/trunk/; revision=26246
2011-03-10 12:08:39 +00:00

64 lines
1.9 KiB
Nix

# This is a simple distributed test involving a topology with two
# separate virtual networks - the "inside" and the "outside" - with a
# client on the inside network, a server on the outside network, and a
# router connected to both that performs Network Address Translation
# for the client.
{ pkgs, ... }:
{
nodes =
{ client =
{ config, pkgs, nodes, ... }:
{ virtualisation.vlans = [ 1 ];
networking.defaultGateway =
nodes.router.config.networking.ifaces.eth2.ipAddress;
};
router =
{ config, pkgs, ... }:
{ virtualisation.vlans = [ 2 1 ];
networking.nat.enable = true;
networking.nat.internalIPs = "192.168.1.0/24";
networking.nat.externalInterface = "eth1";
};
server =
{ config, pkgs, ... }:
{ virtualisation.vlans = [ 2 ];
services.httpd.enable = true;
services.httpd.adminAddr = "foo@example.org";
};
};
testScript =
{ nodes, ... }:
''
startAll;
# The router should have access to the server.
$server->waitForJob("httpd");
$router->succeed("curl --fail http://server/ >&2");
# The client should be also able to connect via the NAT router.
$router->waitForJob("nat");
$client->succeed("curl --fail http://server/ >&2");
$client->succeed("ping -c 1 server >&2");
# If we turn off NAT, the client shouldn't be able to reach the server.
$router->succeed("stop nat");
$client->fail("curl --fail --connect-timeout 5 http://server/ >&2");
$client->fail("ping -c 1 server >&2");
# And make sure that restarting the NAT job works.
$router->succeed("start nat");
$client->succeed("curl --fail http://server/ >&2");
$client->succeed("ping -c 1 server >&2");
$client->succeed("ping -c 1 router >&2");
$router->succeed("ping -c 1 client >&2");
'';
}