The remote host is missing an update to openssl announced via advisory DSA 2392-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202392-1

Antonio Martin discovered a denial-of-service vulnerability in OpenSSL, an implementation of TLS and related protocols. A malicious client can cause the DTLS server implementation to crash. Regular, TCP-based TLS is not affected by this issue. For the oldstable distribution (lenny), this problem has been fixed in version 0.9.8g-15+lenny16. For the stable distribution (squeeze), this problem has been fixed in version 0.9.8o-4squeeze7. For the testing distribution (wheezy) and the unstable distribution (sid), this problem has been fixed in version 1.0.0g-1. We recommend that you upgrade your openssl packages.