FreeBSD Security Advisory (FreeBSD-SA-09:15.ssl.asc)

The remote host is missing an update to the system as announced in the referenced advisory FreeBSD-SA-09:15.ssl.asc
Upgrade your system to the appropriate stable release or security branch dated after the correction date
The SSL (Secure Sockets Layer) and TLS (Transport Layer Security) protocols provide a secure communications layer over which other protocols can be utilized. The most widespread use of SSL/TLS is to add security to the HTTP protocol, thus producing HTTPS. FreeBSD includes software from the OpenSSL Project which implements SSL and TLS. The SSL version 3 and TLS protocols support session renegotiation without cryptographically tying the new session parameters to the old parameters.