Two-Minute Drill

Here are some of the key points from the certification objectives in Chapter 10.

Configuring a Network File System (NFS) Server

❑	NFS is the standard for sharing files and printers between Linux and Unix computers.
❑	Key NFS processes are rpc.mountd for mount requests, rpc.rquotad for quota requests, and nfsd for each network share.
❑	NFS shares are configured in /etc/exports and activated with the exportfs -a command.

Client-Side NFS

❑	Clients can make permanent connections for NFS shares through /etc/fstab.
❑	If an NFS server fails, it can "hang" an NFS client. When possible, avoid using NFS on mission-critical computers.
❑	NFS and portmap have security problems. Limit their use when possible to secure internal networks protected by an appropriate firewall.

The File Transfer Protocol and vsFTPd

❑	RHEL includes the vsFTP server. The default configuration allows anonymous and real user access.
❑	You can customize vsFTP through the /etc/vsftpd/vsftpd.conf configuration file. It also uses authentication files in the /etc/vsftpd/ directory: ftpusers, user_list, and chroot_list.

Samba Services

❑	Samba allows Microsoft Windows computers to share files and printers across networks, using the Server Message Block (SMB) protocol on the TCP/IP protocol stack.
❑	Samba includes a client and a server. Variations on the mount -t cifs or /sbin/mount.cifs commands allow you to connect to a Microsoft Windows shared directory.
❑	The main Samba configuration file is /etc/samba/smb.conf. You can configure it in a text editor or a GUI tool such as the Samba Server Configuration tool.
❑	Samba allows you to configure your Linux computer as a member of a Microsoft Windows 9x-style workgroup.
❑	Samba allows you to configure your Linux computer as a Microsoft Windows server. It can also provide Microsoft browsing, WINS, and Domain Controller services, even on an Active Directory network.