Summary
The remote host is missing an update to the system as announced in the referenced advisory.
Solution
Update your system with the appropriate patches or software upgrades.
http://census-labs.com/news/2009/12/14/monkey-httpd/ http://groups.google.com/group/monkeyd/browse_thread/thread/055b4e9b83973861/ http://www.vuxml.org/freebsd/4465c897-ee5c-11de-b6ef-00215c6a37bb.html
Insight
The following package is affected: monkey