http://blog.packetfault.org/hacking/vulnerability-ospf-with-cryptography-protection-enabled

https://www.owasp.org/index.php/Category:OWASP_DirBuster_Project Attempt to find hidden pages/directories and directories with a web application, thus giving a another attack vector (For example. Finding an unlinked to administration page).

http://www.jpcert.or.jp/wr/2008/wr083201.html