Hello ! SLP (Service Location Protocol) is defined by RFC 2165 and RFC 2608. OpenSLP (the reference implementation) and others SLP softwares (like mSLP) are vulnerable to a denial of service vulnerability (CVE-2010-3609 aka CERT VU#393783). The affected softwares include VMware ESX and ESXi, Novell eDirectory, several SAN manufacturers, some Linux distributions, ... Here's a PoC triggering this vulnerability via either unicast (TCP or UDP), broadcast and multicast : http://www.agarri.fr/docs/SLPick.py More details (in French) on my blog : http://goo.gl/s0zHq Regards, Nicolas Grégoire / Agarri