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Book: LPI Linux Certification in a Nutshell Section: Chapter 22. Exam 102 Review Questions and Exercises
22.8 Networking Services (Topic 1.13) 22.8.1 Review Questions -
Describe the function of inetd and how it is configured. -
Describe the TCP Wrappers security tool and how it can enhance security on a networked system. -
Describe the use of mail aliases and how to enable new aliases. -
What files are used to configure the Apache web server? -
How does the administrator share a directory using NFS? -
How does the administrator mount a directory shared by a remote NFS server? -
What is the function of nmbd? -
Which file is used to configure smbd? -
Describe the function and location of the resolver. -
Name two programs that can be used to do queries against an NFS server. -
Describe in general terms the main difference between BIND v4 and BIND v8 configuration files. 22.8.2 Exercises -
Examine your inetd.conf. Are telnetd and ftpd enabled? If so, are TCP Wrappers (tcpd) configured for them? -
Enable TCP Wrappers and place ALL:ALL in /etc/hosts.deny, then attempt a Telnet session. Is the inbound request ignored as expected? -
Familiarize yourself with /etc/sendmail.cf and /etc/aliases. Run newaliases. -
Familiarize yourself with Apache configuration files in /etc/httpd/html/*.conf (or your directory location). -
Examine your /etc/exports file, if it exists. Are you sharing NFS volumes? -
Examine your /etc/smb.conf file. Are you sharing Samba printers or volumes? -
Examine your resolver configuration in /etc/resolv.conf, /etc/hosts.conf, and /etc/nsswitch.conf. Is the local /etc/hosts file consulted prior to DNS servers? -
By examining /etc/named.conf and noting format details, determine what general release of BIND you are using. | | |
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