Installation guide

III. Network Services Reference .................................................................................................... 157
12. Network Scripts .............................................................................................................. 159
12.1. Network Configuration Files............................................................................ 159
12.2. Interface Configuration Files ........................................................................... 159
12.3. Interface Control Scripts .................................................................................. 163
12.4. Network Functions........................................................................................... 164
12.5. Additional Resources ....................................................................................... 165
13. Firewalls and iptables................................................................................................. 167
13.1. Packet Filtering ................................................................................................ 167
13.2. Differences between iptables and ipchains ............................................. 168
13.3. Options Used in iptables Commands .......................................................... 169
13.4. Storing iptables Information ....................................................................... 175
13.5. Additional Resources ....................................................................................... 176
14. Apache HTTP Server...................................................................................................... 177
14.1. Apache HTTP Server 2.0 ................................................................................. 177
14.2. Migrating Apache HTTP Server 1.3 Configuration Files................................ 178
14.3. After Installation .............................................................................................. 187
14.4. Starting and Stopping httpd........................................................................... 188
14.5. Configuration Directives in httpd.conf ....................................................... 189
14.6. Default Modules............................................................................................... 204
14.7. Adding Modules to Your Server ...................................................................... 205
14.8. Using Virtual Hosts.......................................................................................... 206
14.9. Additional Resources ....................................................................................... 208
15. Email............................................................................................................................... 209
15.1. Protocols .......................................................................................................... 209
15.2. Email Program Classifications......................................................................... 211
15.3. Sendmail .......................................................................................................... 212
15.4. Fetchmail.......................................................................................................... 216
15.5. Procmail ........................................................................................................... 220
15.6. Security ............................................................................................................ 225
15.7. Additional Resources ....................................................................................... 226
16. Berkeley Internet Name Domain (BIND) ....................................................................... 229
16.1. Introduction to DNS and BIND ....................................................................... 229
16.2. BIND Configuration Files................................................................................ 230
16.3. Using rndc ...................................................................................................... 240
16.4. Advanced Features of BIND............................................................................ 242
16.5. Common Mistakes to Avoid ............................................................................ 243
16.6. Additional Resources ....................................................................................... 244
17. Network File System (NFS)............................................................................................ 247
17.1. Methodology.................................................................................................... 247
17.2. NFS Server Configuration Files....................................................................... 249
17.3. NFS Client Configuration Files ....................................................................... 251
17.4. Securing NFS................................................................................................... 253
17.5. Additional Resources ....................................................................................... 254
18. Lightweight Directory Access Protocol (LDAP)............................................................ 257
18.1. Why Use LDAP? ............................................................................................. 257
18.2. OpenLDAP Daemons and Utilities.................................................................. 258
18.3. LDAP Terminology.......................................................................................... 259
18.4. OpenLDAP Configuration Files....................................................................... 260
18.5. OpenLDAP Setup Overview............................................................................ 262
18.6. Upgrading To OpenLDAP Version 2.0 ............................................................ 263
18.7. Configuring Your System to Authenticate Using OpenLDAP......................... 263
18.8. Additional Resources ....................................................................................... 265