account lockout + timeout

[andysayshi]

Hello,

Using pam_tally on an RH 7.2 (2.4.18-19.7.xsmp) server, i have updated
system-auth to lock users account for those who attempted 6 or more
consecutive unsuccessfull logins. This works. What I'd like to do now
is have those accounts disabled for 30 minutes and be unlocked when
the 30 minutes passes.

So far I've been unsuccesfull in doing this, any
suggestions/links/comments on how to do this is greatly appreciated.

Thanks!
A.