164.115.5.126 http://www.knit.or.th/ denyhosts installed
202.44.11.50 http://www.turpif.or.th/ denyhosts installed
164.115.5.127 http://mail2.knit.or.th/ denyhosts installed
164.115.5.124 http://sp2.knit.or.th/
164.115.5.123 http://db.knit.or.th/
164.115.5.122 http://ns.knit.or.th/
164.115.5.128 http://riti.knit.or.th/ denyhosts installed
202.44.11.55 http://www.turpif.or.th/ denyhosts installed
First of all, references to WORK_DIR point to /var/lib/denyhosts/ or something similar on your system.
The default location for the hosts.deny file is /etc/hosts.deny.
Here's the method I used to unblock an IP:
Stop DenyHosts
/etc/init.d/denyhosts stop
Remove the IP address from hosts.deny
Remove all lines containing the IP address from the following files:
WORK_DIR/hosts
WORK_DIR/hosts-restricted
WORK_DIR/hosts-root
WORK_DIR/hosts-valid
WORK_DIR/users-hosts
Consider adding the IP address to WORK_DIR/allowed-hosts
Start DenyHosts