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What will happen if I already installed vsftpd package? Shall I remove it and install the new one? 
Will this command install pureftpd or vsftpd? yum install ajenti-v-ftp-vsftpd
I see that pureftpd is now available on twitter? How to get that?
Port blocked by firewall?
iptables -A INPUT -p tcp --dport 8000 -j ACCEPT
Should be:

Cannot access Ajenti after successful install? 
Your firewall could be blocking port 8000. Please follow the following steps to fix it. 
- Please login to your server with SSH. 
- Edit iptables (firewall) config file by typing the following command: vi /etc/sysconfig/iptables
- Before the line with "COMMIT", enter the following line:
iptables -A INPUT -p tcp --dport 8000 -j ACCEPT
- Ajenti should now be accessible on http://you-server-ip:8000