The remote host is missing an update to freeciv announced via advisory DSA 994-1. Luigi Auriemma discovered a denial of service condition in the free Civilization server that allows a remote user to trigger a server crash. The old stable distribution (woody) is not affected by this problem.

For the stable distribution (sarge) this problem has been fixed in version 2.0.1-1sarge1. For the unstable distribution (sid) this problem has been fixed in version 2.0.8-1. We recommend that you upgrade your freeciv-server package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20994-1