The file that can be used to enable and disable network services running on this host is /etc/xinetd.conf. This file is the main configuration file for the xinetd daemon, which is a super-server that can start other network services on demand. The /etc/xinetd.conf file contains global settings and a list of services that xinetd can manage. Each service has its own configuration section, which can include the disable keyword to enable or disable the service. For example, to disable the telnet service, the configuration section would look like this12:
service telnet
{
disable = yes
socket_type = stream
protocol = tcp
wait = no
user = root
server = /usr/sbin/in.telnetd
log_on_failure += USERID
}
The other files are not related to network services. The /etc/profile file is a global configuration file for the Bash shell, which sets environment variables and aliases for all users3. The /etc/ports file does not exist by default in Linux, and it is not a standard file for network configuration. The /et/host.conf file is a typo, and it should be /etc/host.conf, which is a file that controls the behavior of the resolver library, which is used to look up host names and IP addresses4. The /etc/host.conf file is not used to enable or disable network services, but to specify the order of host name resolution methods5. Reference:
1: How to enable or disable services with xinetd - LinuxConfig.org
2: xinetd.conf(5) - Linux manual page - man7.org
3: What is /etc/profile file in Linux? - LinuxForDevices
4: host.conf(5) - Linux manual page - man7.org
5: Linux host.conf file - Computer Notes