diff --git a/src/capwap/cw_is_printable.c b/src/capwap/cw_is_printable.c
new file mode 100644
index 00000000..69690bef
--- /dev/null
+++ b/src/capwap/cw_is_printable.c
@@ -0,0 +1,33 @@
+/*
+    This file is part of libcapwap.
+
+    libcapwap is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    libcapwap is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include <stdint.h>
+
+/*
+ * Check if a string is printable (human readable)
+ */ 
+int cw_is_printable(const uint8_t * s,int len)
+{
+	int i;
+	for (i=0; i<len; i++){
+		if (s[i]<32 || s[i]>126)
+			return 0;
+	}
+	return 1;
+}
+