In Curbstone's many implementations, we work with lots of different security resources. GreyCastle has impressed us with their really excellent operation, and has proven to Curbstone to be a real contender in the IBM i space. Check them out for the following:
www.greycastlesecurity.com
Contact our friend there, Charlie Weintraub, for more info. 518-274-7233 (SAFE) cweintraub@greycastlesecurity.com