1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Vyatta/TypeChecker.pm b/lib/Vyatta/TypeChecker.pm
index 124dc17..086fee7 100755
--- a/lib/Vyatta/TypeChecker.pm
+++ b/lib/Vyatta/TypeChecker.pm
@@ -124,6 +124,10 @@ sub validate_protocol {
   my $value = shift;
   $value = lc $value;
   return 1 if ($value eq 'all');
+  if ($value =~ /^\d+$/) {
+      # 0 has special meaning to iptables
+      return 1 if $value >= 1 and $value <= 255;
+  }
   if (!open(IN, "</etc/protocols")) {
     print "can't open /etc/protocols";
     return 0;