Apache vs Tomcat configuration question

Question

I was searching in Google and found that Apache can be configured via mod_access directives in the httpd.conf file to block a web site from a particular IP.
Is there anything equivalent in Tomcat?
I am not sure I understand what are the corresponding configuration files.

Thanks

Answer 1

Try the Remote Address Filter. http://tomcat.apache.org/tomcat-5.5-doc/config/valve.html

Answer 2

See the Request filters section of this doc. Doing this via tomcat configuration is pretty static, you need to restart to edit configuration. If you need something dynamic, it's probably best to implement a custom servlet filter.