Check Point Software Technologies Information for VU#723308
TCP may keep its offered receive window closed indefinitely (RFC 1122)
No statement is currently available from the vendor regarding this vulnerability.
On September 08, 2009 when CERT-FI has published the Sockstress advisory (CVE-2008-4609) Check Point has released protections that mitigate both Sockstress and NKiller2 attacks. The following SecureKnowledge articles discuss these advisories: