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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

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UDP null size going to SNMP DoS

Vulnerability Assessment Summary Crashes the remote host by sending a null UDP packet Detailed Explanation for this Vulnerability Assessment It was possible to crash either the remote host or the firewall in between us and the remote host by sending an UDP packet of null size going to port 161 (snmp) This flaw may permit a possible hacker to shut down your network. Solution : contact your firewall vendor if it was the firewall which crashed, or filter incoming UDP traffic if the remote host crashed. Network Security Threat Level: High Networks Security ID: 1009 Vulnerability Assessment Copyright: This script is Copyright (C) 2000 Renaud Deraison

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