Linuxhosts. allow and hosts. deny

Linuxhosts. allow and hosts. deny restrict IP address protection-Linux Enterprise Application-Linux server application information. For details, refer to the following. /Etc/hosts. allow and/etc/hosts. deny

These two files are the configuration files of The tcpd server. The tcpd server can control access to the local service by external IP addresses. The two configuration files are in the following format:

# Service process name: Host list: optional command operation when the rule matches

Server_name: hosts-list [: command]
/Etc/hosts. allow controls access to the local IP address, and/etc/hosts. deny controls prohibit access to the local IP address. If the configurations of the two files conflict, use/etc/hosts. deny. The following is an example of/etc/hosts. allow:

ALL: 127.0.0.1 # Allow the local machine to access ALL service processes on the local machine
Smbd: 192.168.0.0/255.255.255.0 # Allow IP addresses of the 192.168.0. network segment to access the smbd service

The "ALL" keyword matches ALL cases. The "Deny t" keyword matches ALL cases EXCEPT some items. PARANOID matches the IP address you want to control and the domain name does not match (the domain name is disguised.