Dear Brian Candler, I am using both Public IP 202.52.231.194 and Private IP 192.168.0.1. In the Private I can ping but cannot telnet as well as ping to port 25 i.e ping 192.168.0.1 25 and to port 110 i.e. ping 192.168.0.1. Earlier I could do telnet as well as ping to port 25 and 110 through private IP. Kindly let me know where I have done wrong. With regards, Sincerely yours, Mohan Raj Pradhan HealthNet Nepal