diff --git a/packages/lns_server.lua b/packages/lns_server.lua
index 967098b..15d698e 100644
--- a/packages/lns_server.lua
+++ b/packages/lns_server.lua
@@ -83,6 +83,32 @@ function split (inputstr, sep)
     return t
  end
 
+ function check_user_in_group(username, group)
+    local data = {
+        ["action"] = "check_group",
+        ["username"] = username,
+        ["group"] = group
+    }
+
+    local authID = data[auth_server]
+    rednet.send(authID, data, "auth")
+
+    while true do
+        id, msg = rednet.receive("auth")
+        if id == authID then
+            if msg == "invalid request" then
+                io.write("Invalid request\n")
+                return false
+            elseif msg == true then
+                return true
+            else
+                return false
+            end
+        end
+    end
+end
+
+
 load_data()
 
 while true do
@@ -133,7 +159,7 @@ while true do
                 if errorPos then
                     log("Error: " .. auth_response)
                 else
-                    if auth.check_user_in_group(auth_response, auth_group) then
+                    if check_user_in_group(auth_response, auth_group) then
                         auth_passed = true
                     else
                         rednet.send(client_id, "invalid auth", "lns")