diff --git a/isIP.py b/isIP.py
new file mode 100644
index 0000000..25854fd
--- /dev/null
+++ b/isIP.py
@@ -0,0 +1,14 @@
+import re
+
+def isIP(str):
+    p = re.compile('^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$')
+    if p.match(str):
+        return True
+    else:
+        return False
+def isPORT(str):
+    p = re.compile(r'^(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|[1-5]\d{4}|[1-9]\d{0,3}|0)$')
+    if p.match(str):
+        return True
+    else:
+        return False