Hi, The CERT/CC has published a test suite to check systems against vulnerability to SNMPv1 malformed SNMP packets. See http://www.cert.org/advisories/CA-2002-03.html for details. By upgrading to the v3.1.4b or later of SNMP++, managers and agents build on SNMP++ and AGENT++ respectively are invulnerable to these tests. Frank Fock