diff --git a/pkg/udpproxy/udpproxy.go b/pkg/udpproxy/udpproxy.go
index 03dc739..f574749 100644
--- a/pkg/udpproxy/udpproxy.go
+++ b/pkg/udpproxy/udpproxy.go
@@ -36,6 +36,10 @@ func New(port, target string) (*Client, error) {
 	}, nil
 }
 
+func (c *Client) isValidPacket(header []byte) bool {
+	return string(header[:8]) == "\xff\xff\xff\xffrcon" || string(header[:13]) == "\xff\xff\xff\xffgetstatus" || string(header[:11]) == "\xff\xff\xff\xffgetinfo"
+}
+
 func (c *Client) ListenAndServe() error {
 	var err error
 	c.proxyConn, err = net.ListenUDP("udp", c.laddr)
@@ -52,6 +56,10 @@ func (c *Client) ListenAndServe() error {
 			log.Println(err)
 		}
 
+		if !c.isValidPacket(buf[:16]) {
+			continue
+		}
+
 		session, found := c.sessions[caddr.String()]
 		if !found {
 			session, err = createSession(caddr, c.raddr, c.proxyConn)