Page 156 - RHEL8 BOOK

Step : 1 Configure the IP Address
[root@localhost ~]# ifconfig eth0 # Check the IP Address

Step : 2 Install Required Packages for Telnet Server
[root@localhost ~]# yum -y install telnet-server telnet # Install telnet-server package

Step 3: confirm the package installation
[root@localhost ~]# rpm -qa | grep telnet # Confirm telnet-server package installed or not
telnet-server-0.17-59.el7.x86_64
telnet-0.17-59.el7.x86_64

Step 4: Add the service to firewalld.
[root@localhost ~]# firewall-cmd --add-service=telnet --zone=public

Step 5: Add the service to selinux.
[root@localhost ~]# semanage port -a -t telnetd_port_t -p tcp

Step 6: Configure the Telnet Server
[root@localhost ~]# nano /etc/xinetd.d/telnet # Configuring Telnet-Server
# default: on
# description: The telnet server serves telnet sessions; it uses \
# unencrypted username/password pairs for authentication.
service telnet
{
flags = REUSE
socket_type = stream
wait = no
user = root
server = /usr/sbin/in.telnetd
log_on_failure += USERID
disable = no
}

Step 7: Enable and start the telnet service
Start the service using the systemctl command.
[root@localhost ~]# systemctl start telnet.socket

Enable the telnet service to start at boot.
[root@localhost ~]# systemctl enable telnet.socket

Step 8: Allow root User Login to Telnet Server (If Required)
So here I can connect to Telnet Server by using Username as elinuxbook and Password as Password of
elinuxbook.
[root@localhost ~]# nano /etc/securetty # Allow root user to login telnet-server from Client Side
pts/0
pts/1
pts/2
pts/3

S. Pradhan
(MCA, MBA-IT, BCA, CCNA, MCSA 2012, RHCE, ETHICAL HACKING)
Email Id:-spradhan.iiht@gmail.com
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