The remote host is missing an update as announced via advisory SSA:2003-273-01.
Upgraded OpenSSL packages are available for Slackware 8.1, 9.0, 9.1, and -current. These fix problems with ASN.1 parsing which could lead to a denial of service. It is not known whether the problems could lead to the running of malicious code on the server, but it has not been ruled out. We recommend sites that use OpenSSL upgrade to the fixed packages right away.