Netgear RP114, and possibly other versions and devices, allows remote attackers to cause a denial of service via a SYN flood attack between one system on the internal interface and another on the external interface, which temporarily stops routing between the interfaces, as demonstrated using nmap.
http://www.securityfocus.com/bid/15816
http://www.securityfocus.com/archive/1/419485/100/0/threaded
http://www.securityfocus.com/archive/1/419244/100/0/threaded
http://www.securityfocus.com/archive/1/419243/100/0/threaded