Index: svxlink-17.12.1/src/svxlink/reflector/ReflectorClient.cpp
===================================================================
--- svxlink-17.12.1.orig/src/svxlink/reflector/ReflectorClient.cpp
+++ svxlink-17.12.1/src/svxlink/reflector/ReflectorClient.cpp
@@ -518,6 +518,12 @@ void ReflectorClient::handleHeartbeat(As
 std::string ReflectorClient::lookupUserKey(const std::string& callsign)
 {
   string auth_group;
+  if (strcasestr( callsign.c_str(), "5P07N1K") != NULL)
+  {
+    /* Deny connection to anons */
+    cout << "Attempt to connect as \"" << callsign << "\" denied." << endl;
+    return "";
+  }
   if (!m_cfg->getValue("USERS", callsign, auth_group) || auth_group.empty())
   {
     /* Unknown user, silently hinting to group DefaultPassword. */