Rule:--Sid:713--Summary:This event is generated when an attempt is made to exploit a knownvulnerability in a Lucent/Livingston Portmaster router.--Impact:Denial of Service (DoS).--Detailed Information:This event is generated when an attempt is made to issue a Denial ofService (DoS) attack against a Livingston/Lucent router. In somesituations malformed data sent to the Telnet service on the router cancause the DoS to occur.Lucent Portmaster routers were previously known as Livingston Portmasterfrom Livingston Technologies.--Affected Systems:	Lucent Portmaster 1.0	Lucent Portmaster 2.0	Lucent Portmaster 3.0--Attack Scenarios:The attacker can use one of the publicly available exploit scripts.--Ease of Attack:Simple. Exploit code exists.--False Positives:None known--False Negatives:None known.--Corrective Action:The Portmaster series of routers is no longer available.Disable the Telnet service if possible.Reboot the router to regain the service--Contributors:Original Rule Writer UnknownSourcefire Research TeamNigel Houghton <nigel.houghton@sourcefire.com>-- Additional References:Bugtraq:http://www.securityfocus.com/bid/2225CVE:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0218--