Red Hat Knowledgebase

You can increase the number of concurrent Telnet connections that your server will accept by editing the file /etc/xinetd.d/telnet and adding a line that reads:

instances = 100

Where 100 represents the maximum number of concurrent connections. For example:

# default: on
# description: The telnet server serves telnet sessions; it uses \
#       unencrypted username/password pairs for authentication.
service telnet
{
        disable = no
        flags           = REUSE
        socket_type     = stream
        wait            = no
        user            = root
        server          = /usr/sbin/in.telnetd
        log_on_failure  += USERID
        instances       = 100
}

The maximum number of instances specified in the /etc/xinetd.conf file applies as a default to this service when no value is specified by the service in its configuration file.

You will now need to restart the xinetd, daemon using the command:

# service xinetd restart