Unspecified vulnerability in TOS 2.1.x, 2.2.x before 2.2.5, and 2.5.x before 2.5.2 on TippingPoint IPS allows remote attackers to avoid detection by sending certain fragmented packets.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35343
http://www.vupen.com/english/advisories/2007/2489
http://www.securitytracker.com/id?1018386
http://www.securityfocus.com/bid/24861
http://www.securityfocus.com/archive/1/473394/100/0/threaded
http://www.cybsec.com/vuln/CYBSEC-Security_Pre-Advisory_3Com_TippingPoint_IPS_Detection_Bypass_2.pdf
http://www.3com.com/securityalert/alerts/3COM-07-002.html
http://secunia.com/advisories/26017
http://archives.neohapsis.com/archives/fulldisclosure/2007-07/0210.html