--- pcnfsd_misc.c	Wed Apr  6 02:48:20 1994
+++ pcnfsd_misc2.c	Sun Aug 16 23:51:53 1998
@@ -114,8 +114,13 @@ char *r;
 int suspicious (s)
 char *s;
 {
-	if(strpbrk(s, ";|&<>`'#!?*()[]^/") != NULL)
-		return 1;
+        /* Linux rpc.pcnfsd patch developed by Mark Zielinski of RSI.
+           Http://www.repsec.com */
+
+        if (strspn(s, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_=:+1234567890@%,.")
+          != strlen(s))
+            return 1;
+
 	return 0;
 }