Spotted minor issue with line duplication for dns sweeping.

Author: evcsec

find_dns.py

@@ -33,7 +33,7 @@ def find_dns(target_hosts, output_directory, quiet):
         for line in lines:
             line = line.strip()
             line = line.rstrip()
-            if ("53/tcp" in line) and ("open" in line):
+            if ("53/tcp" in line) and ("open" in line) and ("Discovered" not in line):
                 print("      [=] Found DNS service running on: %s" % (ip_address))
                 output_file.write("[*] Found DNS service running on: %s\n" % (ip_address))
                 output_file.write("   [>] %s\n" % (line))