diff --git a/krebs/3modules/external/default.nix b/krebs/3modules/external/default.nix
index 9bfc920a3..080c259aa 100644
--- a/krebs/3modules/external/default.nix
+++ b/krebs/3modules/external/default.nix
@@ -167,6 +167,20 @@ in {
         };
       };
     };
+    horisa = {
+      cores = 2;
+      owner = config.krebs.users.ulrich; # main laptop
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.226.213";
+          ip6.addr = "42:0:e644:9099:4f8:b9aa:3856:4e85";
+          aliases = [
+            "horisa.r"
+          ];
+          tinc.pubkey = tinc-for "horisa";
+        };
+      };
+    };
     idontcare = {
       owner = config.krebs.users.Mic92;
       nets = rec {
diff --git a/krebs/3modules/external/tinc/horisa.pub b/krebs/3modules/external/tinc/horisa.pub
new file mode 100644
index 000000000..06d686ce3
--- /dev/null
+++ b/krebs/3modules/external/tinc/horisa.pub
@@ -0,0 +1,8 @@
+-----BEGIN RSA PUBLIC KEY-----
+MIIBCgKCAQEA1hhBqCku98gimv0yXr6DFwE2HUemigyqX8o7IsPOW5XT/K8o+V40
+Oxk3r0+c7IYREvug/raxoullf5TMJFzTzqzX4njgsiTs25V8D7hVT4jcRKTcXmBn
+XpjtD+tIeDW1E6dIMMDbxKCyfd/qaeg83G7gPobeFYr4JNqQLXrnotlWMO9S13UT
++EgSP2pixv/dGIqX8WRg23YumO8jZKbso/sKKFMIEOJvnh/5EcWb24+q2sDRCitP
+sWJ5j/9M1Naec/Zl27Ac2HyMWRk39F9Oo+iSbc47QvjKTEmn37P4bBg3hY9FSSFo
+M90wG/NRbw1Voz6BgGlwOAoA+Ln0rVKqDQIDAQAB
+-----END RSA PUBLIC KEY-----