How to disable user account automatically?

[Tzunghsing David Wong (王宗興)]

Hi there,

Due to security concern, I would like to disable the user account
after certain failed login attempts, but I don't know how to do it
unattendedly. Please advice. Thanks!!

Our system is:

sfi$ uname -a
SunOS dns.sfi.com.tw 5.5 Generic sun4m sparc SUNW,SPARCstation-5

Please send your response to <mailto:wo...@sfi.com.tw> as I don't
read this newsgroup regularly. If this is an FAQ, please forgive
me and send me a pointer to where I can find the answer.

<wong>
#---- TzungHsing David Wong -- * 349 ** NTHU.EE82 ** NCSU.CSE88 *
E-mail: wo...@sfi.com.tw =====
Web: http://www.sfi.com.tw/~wong ==!==
Voice: +886 3 578 2258 ext. 2139 =====