diff --git a/res/legacy.install.bat b/res/legacy.install.bat
index a7d8de2..303cc32 100644
--- a/res/legacy.install.bat
+++ b/res/legacy.install.bat
@@ -50,6 +50,7 @@ if not !errorlevel!==0 (
 echo [*] Setting firewall configuration...
 reg add "HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
 netsh advfirewall firewall add rule name="Remote Desktop" dir=in protocol=tcp localport=3389 profile=any action=allow
+netsh advfirewall firewall add rule name="Remote Desktop" dir=in protocol=udp localport=3389 profile=any action=allow
 echo [*] Looking for TermService PID...
 tasklist /SVC /FI "SERVICES eq TermService" | find "PID" /V
 echo.
@@ -88,4 +89,4 @@ echo net start Service2
 echo etc.
 goto END
 
-:END
\ No newline at end of file
+:END
diff --git a/src-installer/RDPWInst.dpr b/src-installer/RDPWInst.dpr
index 7894f3b..b6c2462 100644
--- a/src-installer/RDPWInst.dpr
+++ b/src-installer/RDPWInst.dpr
@@ -978,8 +978,10 @@ end;
 procedure TSConfigFirewall(Enable: Boolean);
 begin
   if Enable then
-    ExecWait('netsh advfirewall firewall add rule name="Remote Desktop" dir=in protocol=tcp localport=3389 profile=any action=allow')
-  else
+  begin
+    ExecWait('netsh advfirewall firewall add rule name="Remote Desktop" dir=in protocol=tcp localport=3389 profile=any action=allow');
+    ExecWait('netsh advfirewall firewall add rule name="Remote Desktop" dir=in protocol=udp localport=3389 profile=any action=allow');
+  end else
     ExecWait('netsh advfirewall firewall delete rule name="Remote Desktop"');
 end;