Bugzilla Apache server config

I have installed Bugzi开发者_StackOverflow中文版lla on my dedicated server with Centos5.5. I have already a website running on this server with Apache config

<VirtualHost *:80>
DocumentRoot /var/www/html/XXX
..
</VirtualHost>

and I have defined a new virtual host on Apache as

<VirtualHost *:8000>
   DocumentRoot /var/www/html/bugzilla

   <Directory /var/www/html/bugzilla>
      AddHandler cgi-script cgi pl
      Options +Indexes +ExecCGI
      DirectoryIndex index.cgi
      AllowOverride Limit
   </Directory>
</VirtualHost>

However, I can't reach bugzilla anyway.. What is the right way to do that ? Thanks

Is there any chance that the firewall is blocking port 8000?