I used Redhat 8.0 with tcp_wrapper , now I want to configure the file /etc/hosts.allow or /etc/hosts.deny to achive only one ip can use in.telnetd , so I edited the file /etc/hosts.deny added the following line
in.telnetd : ALL EXCEPT 10.0.0.166
and left the file /etc/hosts.allow blank
but the result was I couldn't telnet the computer , why?
please help me. I had read the redhat reference guide .