Thank you for your reply. Below is the log from fail2ban. I wonder if you can direct me to problem area:
2013-04-13 16:36:46,256 fail2ban.actions.action: ERROR iptables -D INPUT -p tcp -j fail2ban-PBX-GUI
iptables -F fail2ban-PBX-GUI
iptables -X fail2ban-PBX-GUI returned 100
2013-04-13 16:36:46,262 fail2ban.jail : INFO Jail ‘apache-tcpwrapper’ stopped
2013-04-13 16:36:47,258 fail2ban.actions.action: ERROR iptables -D INPUT -p tcp -j fail2ban-BadBots
iptables -F fail2ban-BadBots
iptables -X fail2ban-BadBots returned 100
2013-04-13 16:36:47,265 fail2ban.jail : INFO Jail ‘apache-badbots’ stopped
2013-04-13 16:36:48,256 fail2ban.actions.action: ERROR iptables -D INPUT -p tcp -j fail2ban-SSH
iptables -F fail2ban-SSH
iptables -X fail2ban-SSH returned 100
2013-04-13 16:36:48,263 fail2ban.jail : INFO Jail ‘ssh-iptables’ stopped
2013-04-13 16:36:49,260 fail2ban.actions.action: ERROR iptables -D INPUT -p all -j fail2ban-SIP
iptables -F fail2ban-SIP
iptables -X fail2ban-SIP returned 100
2013-04-13 16:36:49,266 fail2ban.jail : INFO Jail ‘asterisk-iptables’ stopped
2013-04-13 16:36:50,258 fail2ban.actions.action: ERROR iptables -D INPUT -p tcp -j fail2ban-FTP
iptables -F fail2ban-FTP
iptables -X fail2ban-FTP returned 100
2013-04-13 16:36:50,264 fail2ban.jail : INFO Jail ‘vsftpd-iptables’ stopped
2013-04-13 16:36:50,266 fail2ban.server : INFO Exiting Fail2ban
2013-04-13 16:36:52,033 fail2ban.server : INFO Changed logging target to /var/log/fail2ban.log for Fail2ban v0.8.4
2013-04-13 16:36:52,035 fail2ban.jail : INFO Creating new jail 'ssh-iptables’
2013-04-13 16:36:52,038 fail2ban.jail : INFO Jail ‘ssh-iptables’ uses Gamin
2013-04-13 16:36:52,098 fail2ban.filter : INFO Added logfile = /var/log/secure
2013-04-13 16:36:52,101 fail2ban.filter : INFO Set maxRetry = 5
2013-04-13 16:36:52,109 fail2ban.filter : INFO Set findtime = 600
2013-04-13 16:36:52,112 fail2ban.actions: INFO Set banTime = 18000
2013-04-13 16:36:52,317 fail2ban.jail : INFO Creating new jail 'asterisk-iptables’
2013-04-13 16:36:52,318 fail2ban.jail : INFO Jail ‘asterisk-iptables’ uses Gamin
2013-04-13 16:36:52,321 fail2ban.filter : INFO Added logfile = /var/log/asterisk/full
2013-04-13 16:36:52,324 fail2ban.filter : INFO Set maxRetry = 3
2013-04-13 16:36:52,332 fail2ban.filter : INFO Set findtime = 600
2013-04-13 16:36:52,334 fail2ban.actions: INFO Set banTime = 18000
2013-04-13 16:36:52,428 fail2ban.jail : INFO Creating new jail 'apache-tcpwrapper’
2013-04-13 16:36:52,428 fail2ban.jail : INFO Jail ‘apache-tcpwrapper’ uses Gamin
2013-04-13 16:36:52,432 fail2ban.filter : INFO Added logfile = /var/log/httpd/error_log
2013-04-13 16:36:52,434 fail2ban.filter : INFO Set maxRetry = 6
2013-04-13 16:36:52,443 fail2ban.filter : INFO Set findtime = 600
2013-04-13 16:36:52,445 fail2ban.actions: INFO Set banTime = 18000
2013-04-13 16:36:52,489 fail2ban.jail : INFO Creating new jail 'apache-badbots’
2013-04-13 16:36:52,490 fail2ban.jail : INFO Jail ‘apache-badbots’ uses Gamin
2013-04-13 16:36:52,494 fail2ban.filter : INFO Added logfile = /var/log/httpd/access_log
2013-04-13 16:36:52,496 fail2ban.filter : INFO Set maxRetry = 1
2013-04-13 16:36:52,505 fail2ban.filter : INFO Set findtime = 600
2013-04-13 16:36:52,507 fail2ban.actions: INFO Set banTime = 172800
2013-04-13 16:36:52,610 fail2ban.jail : INFO Creating new jail 'vsftpd-iptables’
2013-04-13 16:36:52,610 fail2ban.jail : INFO Jail ‘vsftpd-iptables’ uses Gamin
2013-04-13 16:36:52,613 fail2ban.filter : INFO Set maxRetry = 5
2013-04-13 16:36:52,622 fail2ban.filter : INFO Set findtime = 600
2013-04-13 16:36:52,624 fail2ban.actions: INFO Set banTime = 1800
2013-04-13 16:36:52,678 fail2ban.jail : INFO Jail ‘ssh-iptables’ started
2013-04-13 16:36:52,684 fail2ban.jail : INFO Jail ‘asterisk-iptables’ started
2013-04-13 16:36:52,692 fail2ban.jail : INFO Jail ‘apache-tcpwrapper’ started
2013-04-13 16:36:52,700 fail2ban.jail : INFO Jail ‘apache-badbots’ started
2013-04-13 16:36:52,708 fail2ban.jail : INFO Jail ‘vsftpd-iptables’ started