Red Hat ENTERPRISE LINUX 4 System Administration Manual page 7

18.5.1. Postrouting and IP Masquerading ......................................................... 184
18.5.2. Prerouting ............................................................................................ 184
18.5.3. DMZs and IPTables ............................................................................. 185
18.6. Malicious Software and Spoofed IP Addresses ................................................. 185
18.7. IPTables and Connection Tracking .................................................................. 186
18.8. IPv6 ............................................................................................................... 186
18.9. Additional Resources ...................................................................................... 187
18.9.1. Installed Documentation ....................................................................... 187
18.9.2. Useful Websites ................................................................................... 187
18.9.3. Related Documentation ........................................................................ 187
19. Controlling Access to Services
19.1. Runlevels ....................................................................................................... 189
19.2. TCP Wrappers ................................................................................................ 190
19.2.1. xinetd ............................................................................................... 190
19.3. Services Configuration Tool ......................................................................... 191
19.4. ntsysv ........................................................................................................... 193
19.5. chkconfig .................................................................................................... 194
19.6. Additional Resources ...................................................................................... 194
19.6.1. Installed Documentation ....................................................................... 195
19.6.2. Useful Websites ................................................................................... 195
19.6.3. Related Books ..................................................................................... 195
20. OpenSSH
20.1. Why Use OpenSSH? ...................................................................................... 197
20.2. Configuring an OpenSSH Server ..................................................................... 197
20.3. Configuring an OpenSSH Client ...................................................................... 198
20.3.1. Using the ssh Command ..................................................................... 198
20.3.2. Using the scp Command ..................................................................... 198
20.3.3. Using the sftp Command ................................................................... 199
20.3.4. Generating Key Pairs ........................................................................... 199
20.4. Additional Resources ...................................................................................... 203
20.4.1. Installed Documentation ....................................................................... 203
20.4.2. Useful Websites ................................................................................... 203
20.4.3. Related Books ..................................................................................... 203
21. Network File System (NFS)
21.1. Why Use NFS? .............................................................................................. 205
21.2. Mounting NFS File Systems ............................................................................ 205
21.2.1. Mounting NFS File Systems using /etc/fstab .................................... 205
21.2.2. Mounting NFS File Systems using autofs ............................................... 206
21.2.3. Using TCP ........................................................................................... 207
21.2.4. Preserving ACLs .................................................................................. 207
21.3. Exporting NFS File Systems ............................................................................ 208
21.3.1. Command Line Configuration ................................................................ 210
21.3.2. Hostname Formats ............................................................................... 211
21.3.3. Starting and Stopping the Server .......................................................... 211
21.4. Additional Resources ...................................................................................... 212
21.4.1. Installed Documentation ....................................................................... 212
21.4.2. Useful Websites ................................................................................... 212
21.4.3. Related Books ..................................................................................... 212
22. Samba
189
197
205
213
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