id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
23350	Pingback Denial of Service Fix - filter_var based IP validation	hakre		"Just a small improvement upon review of [23330] (some points were not clear to me, especially colons in hostnames and trimming of the hostnames for dots; left them as-is).

Also used {{{strcasecmp}}}.

BTW, what about #4137, can it be closed now?
"	defect (bug)	new	normal	Awaiting Review	Pings/Trackbacks	3.5.1	normal		has-patch