| Much of the success of Linux can be attributed to bundled networking services , such as the Apache web server, Sendmail, NFS and Windows file sharing, and others. This chapter covers these six Objectives on networking services:
Objective 1: Configure and Manage inetd, xinetd, and Related Services Candidates should be able to configure which services are available through inetd or xinetd, use tcpwrappers to allow or deny services on a host-by-host basis; manually start, stop, and restart Internet services; configure basic network services including telnet and ftp. Candidates should also be able to set a service to run as another user instead of the default in inetd.conf. Weight: 4.
Objective 2: Operate and Perform Basic Configuration of Mail Transfer Agent (MTA) Candidates should be able to modify simple parameters in Sendmail configuration files (including the "smart host" parameter, if necessary), create mail aliases, manage the mail queue, start and stop Sendmail, configure mail forwarding and perform basic troubleshooting of Sendmail. This Objective includes checking for and closing open relays on the mail server. It does not include advanced custom configuration of Sendmail. Weight: 4.
Objective 3: Operate and Perform Basic Configuration of Apache Candidates should be able to modify simple parameters in Apache configuration files; start, stop, and restart httpd; and arrange for automatic restarting of httpd upon boot. This objectives does not include advanced custom configuration of Apache. Weight: 4.
Objective 4: Properly Manage the NFS and Samba Daemons A candidate should know how to mount remote filesystems using NFS; configure NFS for exporting local filesystems; start, stop, and restart the NFS server; install and configure Samba using the included GUI tools or direct edit of the /etc/smb.conf file. (This deliberately excludes advanced NT domain issues but includes simple sharing of home directories and printers, as well as correctly setting the nmbd as a WINS client.) Weight: 4.
Objective 5: Set Up and Configure Basic DNS Services Candidates should be able to configure hostname lookups and troubleshoot problems with local caching-only name servers. This requires an understanding of the domain registration and DNS translation process and an understanding of the key differences in configuration files for Bind 4 and Bind 8. Weight: 4.
Objective 7: Set Up Secure Shell (OpenSSH) The candidate should be able to obtain and configure OpenSSH. This Objective includes basic OpenSSH installation and troubleshooting, as well as configuring sshd to start at system boot. Weight: 4. For systems deployed as servers, even in a small department, these Objectives cover some of most important system administration concepts to be performed for Linux. |
