Enabling Telnet and FTP ServicesLinux is configured to run the Telnet and FTP server, but by default, these services are not enabled. To enable the telnet service, login to the server as the root user account and run the following commands:# chkconfig telnet on # service xinetd reload Reloading configuration: [ OK ]Starting with the Red Hat Enterprise Linux 3.0 release (and in CentOS Enterprise Linux), the FTP server (wu-ftpd) is no longer available with
xinetd. It has been replaced with vsftp and can be started from /etc/init.d/vsftpd as in the following:
# /etc/init.d/vsftpd start Starting vsftpd for vsftpd: [ OK ]If you want the vsftpd service to start and stop when recycling (rebooting) the machine, you can create the following symbolic links:# ln -s /etc/init.d/vsftpd /etc/rc3.d/S56vsftpd # ln -s /etc/init.d/vsftpd /etc/rc4.d/S56vsftpd # ln -s /etc/init.d/vsftpd /etc/rc5.d/S56vsftpd
Allowing Root Logins to Telnet and FTP Services
Now before getting into the details of how to configure Red Hat Linux for root logins, keep in mind that this is VERY BAD security. Make sure that you NEVER configure your production servers for this type of login.Configure Telnet for root logins
Simply edit the file
/etc/securettyand add the following to the end of the file:
pts/0 pts/1 pts/2 pts/3 pts/4 pts/5 pts/6 pts/7 pts/8 pts/9This will allow up to 10 telnet sessions to the server as root.Configure FTP for root logins
Edit the files
/etc/vsftpd.user_listand remove the '
root' line from each file.
Thursday, July 29, 2010
Red Hat Enterprise Linux: RHEL3 / RHEL4