[CentOS] Looking for recommendations for blocking hacking attempts

Hello:

I have been looking into projects that will automatically
restrict hacking attempts on my servers running CentOS 5.

I think the two top contenders are:
	DenyHosts - http://denyhosts.sourceforge.net
	Fail2ban - http://www.fail2ban.org

>From what I see, DenyHosts only blocks based on failed
SSH attempts whereas Fail2ban blocks failed attempts
for other access as well.

The main benefit I see from DenyHosts is their synchronization
service where my servers can proactively block hosts recognized
by other users of their service.

Does anyone have experience with these tools and have
recommendations?

Thanks,
	Neil

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