The remote host is missing an update to gopher announced via advisory DSA 638-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20638-1

jaguar has discovered two security relevant problems in gopherd, the Gopher server in Debian which is part of the gopher package. The Common Vulnerabilities and Exposures project identifies the following vulnerabilities: CVE-2004-0560 An integer overflow can happen when posting content of a specially calculated size. CVE-2004-0561 A format string vulnerability has been found in the log routine. For the stable distribution (woody) these problems have been fixed in version 3.0.3woody2. The unstable distribution (sid) does not contain a gopherd package. It has been replaced by Pygopherd. We recommend that you upgrade your gopherd package.