diff --git a/hosts/snowhawk/configuration.nix b/hosts/snowhawk/configuration.nix
index dbc7703..c5d471c 100644
--- a/hosts/snowhawk/configuration.nix
+++ b/hosts/snowhawk/configuration.nix
@@ -110,6 +110,7 @@
 
   # Enable the OpenSSH daemon.
   services.openssh.enable = true;
+  services.openssh.openFirewall = true;
 
   # Open ports in the firewall.
   # networking.firewall.allowedTCPPorts = [ ... ];