java.io.IOException: Server returned HTTP response code: 403 for URL: http://www.terracotta.org/kit/reflector?pageID=update.properties&kitID=ehcache.default&id=-1062731536&os-name=Windows+8.1&jvm-name=Java+HotSpot%28TM%29+64-Bit+Server+VM&jvm-version=1.8.0_05&platform=amd64&tc-version=2.6.9&tc-product=Ehcache+Core+2.6.9&source=Ehcache+Core&uptime-secs=1&patch=UNKNOWN
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1838) ~[?:1.8.0_05]
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1439) ~[?:1.8.0_05]
	at net.sf.ehcache.util.UpdateChecker.getUpdateProperties(UpdateChecker.java:108) ~[ehcache-core-2.6.9.jar:?]
	at net.sf.ehcache.util.UpdateChecker.doCheck(UpdateChecker.java:72) ~[ehcache-core-2.6.9.jar:?]
	at net.sf.ehcache.util.UpdateChecker.checkForUpdate(UpdateChecker.java:60) [ehcache-core-2.6.9.jar:?]
	at net.sf.ehcache.util.UpdateChecker.run(UpdateChecker.java:51) [ehcache-core-2.6.9.jar:?]
	at java.util.TimerThread.mainLoop(Timer.java:555) [?:1.8.0_05]
	at java.util.TimerThread.run(Timer.java:505) [?:1.8.0_05]

ehcache-default.xml 로 가서 updateCheck를 false로 지정하면 더이상 톰캣구동시 에러가 발생하지 않는다.

ehcache updateCheck="false"