A vulnerability was found which may allow a remote attacker to cause a denial of service to Simple DNS Plus Sending multiple DNS respond packets to the source port of the server This vulnerability is fixed in the new version of Simple DNS Plus 5.1.101. usage: sdns-dos.pl <dns server> <dns source port> <num of packets> Exploit written by Exodus. http://www.blackhat.org.il http://www.blackhat.org.il/index.php/simple-dns-plus-5041-remote-denial-of-s ervice-exploit/