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Index: D

arguments passed : 10.6.2.1. Transforming with a database
defining (K command) : 10.6.2.1. Transforming with a database

datagrams

1.3. TCP/IP Protocol Architecture

1.5.1.1. The datagram

1.7. Application Layer

(see also IP datagrams)

(see also User Datagram Protocol)

connectionless delivery of : 1.6. Transport Layer

converting source address of : 4.2.1. Obtaining an IP Address

forwarding : 5.3.1.1. Options

fragmented

1.5.1.3. Fragmenting datagrams
5.2. Linux Kernel Configuration

headers

2.7.1. Protocol Numbers
2.7.2. Port Numbers

marking end of : 6.2.1. The Serial Protocols

routing : 1.5.1.2. Routing datagrams

silently discarding : 11.8. Protocol Case Study

DCD (Data Carrier Detect) modem control line : A.2. The PPP Daemon

DDN Protocol Handbook : 1.3. TCP/IP Protocol Architecture

DDN security bulletins : 12.1.2.2. Use mailing lists to distribute information

debugging

8.2.1. The Resolver Configuration File
C.1.1. Signal Processing

decentralizing management : 2.3. Subnets

decryption : 12.6. Encryption

dedicated connections

6.3.1. The PPP Daemon
6.4. Installing SLIP

default

domain

3.3.3. Domain Names
8.2.1. The Resolver Configuration File
how used : 3.3.3. Domain Names

gateway

2.5. The Routing Table
4.3. Planning Routing
address : 4. Getting Started

mask : 2.2.2. Classless IP Addresses

passwords : 12.2. User Authentication

route

2.2.2.1. Final notes on IP addresses
2.5. The Routing Table
7.3. Building a Static Routing Table
defining : 7.4.1.1. Running RIP with routed

values : 3.6.1. Dynamic Host Configuration Protocol

defaultdomain file : 9.3. Network Information Service

defaultroute option : 6.3.1. The PPP Daemon

Defense Communications Agency (DCA) : 1.1. TCP/IP and the Internet

define macro (in sendmail)

E.3. m4 sendmail Macros
E.3.1. define

definition statements (in gated) : B.7. Definition Statements

delays, inserting

6.3.2. Dial-Up PPP
6.4.4. Troubleshooting Serial Connections

demultiplexing : 2.7. Protocols, Ports, and Sockets

denial of service, threat of : 12.1.1. Assessing the Threat

dequote database : 10.7.1. Modifying Local Information

DES-encrypted authentication : (see authentication)

designated router : 7.4.3. Open Shortest Path First

destination

1.7. Application Layer
(see also unreachable destinations, detecting)
fields : 2.5. The Routing Table
host : 2.5. The Routing Table

Destination Address

1.5.1.1. The datagram
2.2. The IP Address

Destination Port number

1.6.1. User Datagram Protocol
1.6.2. Transmission Control Protocol

Destination Unreachable Message : 1.5.2. Internet Control Message Protocol

/dev directory : 6.4.4. Troubleshooting Serial Connections

device statement : 5.3.1.3. Devices

dfstab file

9.1.2.1. The share command
9.1.5.1. NFS print services

dgram sockets : 5.4. The Internet Daemon

DHCP (Dynamic Host Configuration Protocol)

Preface

3.6.1. Dynamic Host Configuration Protocol

backwards-compatible : 9.5. DHCP

based on Bootstrap Protocol (BOOTP) : 9.4.2. BOOTP extensions

benefits of : 9.5. DHCP

daemon (dhcpd) : 9.5.1. dhcpd.conf

command : D.2. The dhcpd Command
compiling : D.1. Compiling dhcpd
configuring : D.3. The dhcpd.conf Configuration File
tools reference : D. A dhcpd Reference
using latest versions of : D. A dhcpd Reference

interoperability and : 3.6.1. Dynamic Host Configuration Protocol

options available with : D.3.3. DHCP Options

commonly used : D.3.3.1. Commonly used options
others : D.3.3.2. Other options

dhcpd.conf file : 9.5.1. dhcpd.conf

dhcpd.pid file : D.2. The dhcpd Command

diagnostic tools : 11.2. Diagnostic Tools

dial-up connections : 6.3.1. The PPP Daemon

dial-up IP (dip)

6.3.2. Dial-Up PPP

6.4.2. Dial-Up IP

script file : A.1.1. The dip Script File

sample : A.1.1.1. A sample dip script
for SLIP : 6.4.2. Dial-Up IP
special variables, listed : A.1.1. The dip Script File

tools reference : A.1. Dial-Up IP

dial-up PPP : 6.3.2. Dial-Up PPP

dictionary guessing : 12.2. User Authentication

dig

11.2. Diagnostic Tools
11.3. Testing Basic Connectivity
11.6.4. dig: An Alternative to nslookup
query types : 11.6.4. dig: An Alternative to nslookup

digest multipart subtype : 3.4.3. Multipurpose Internet Mail Extensions

digital signature system : 12.6. Encryption

Dijkstra Shortest Path First (SPF) algorithm : 7.4.3. Open Shortest Path First

dip (dial-up IP)

6.3.2. Dial-Up PPP

6.4.2. Dial-Up IP

script file : A.1.1. The dip Script File

sample : A.1.1.1. A sample dip script
for SLIP : 6.4.2. Dial-Up IP

tools reference : A.1. Dial-Up IP

diphosts file : 6.4.3. SLIP Server Configuration

diplogin command : 6.4.3. SLIP Server Configuration

direct delivery : 3.4.1. Simple Mail Transfer Protocol

directive statements (in gated) : B.3. Directive Statements

directory

requirement for mounting : 9.1.3. Mounting Remote Filesystems
statement : 8.3.1.2. Primary and secondary server configurations

disaster recovery plans

11.10. Summary
12.1.1. Assessing the Threat
12.1.3. Writing a Security Policy
12.8. Words to the Wise

disclosure of information, threat of : 12.1.1. Assessing the Threat

dismounting directories, by booting : 9.1.3.1. The mount command

Distfile : 9.6.1. rdist

distributed

architecture : 7.5.1. Exterior Gateway Protocol
control : 12.1.2. Distributed Control
servers, managing : 9.6. Managing Distributed Servers

Distributed File System (DFS) : 3.7.1. File Sharing

distributing public keys : 12.6. Encryption

dividing problem into manageable pieces : 11.1.1. Troubleshooting Hints

DMBDEF variable : E.4.4. The sendmail K Command

dmesg command : 6.1.1. Determining the Interface Name

DNS (Domain Name Service)

1.7. Application Layer

3.1. Names and Addresses

3.3. Domain Name Service

(see also name service)

benefits of

3.3. Domain Name Service
3.3.4. BIND, resolver, and named

querying : 10.7.1. Modifying Local Information

starting : 5.4. The Internet Daemon

docs/warnings file : 12.4.3.1. COPS

documentation

historical, of problems : 11.1.1. Troubleshooting Hints
using : 4.6. Informing the Users

domain

1.7. Application Layer

(see also domain)

administration

3.3.4. BIND, resolver, and named
8.1. BIND: UNIX Name Service
contacting : 13.6. The White Pages

allocating : (see Network Information Center)

creating : 3.3.2. Creating Domains and Subdomains

downloading an entire : 8.4. Using nslookup

entry, in resolv.conf : 8.2.1. The Resolver Configuration File

hierarchy

3.3.1. The Domain Hierarchy
8.1. BIND: UNIX Name Service

name (dn)

3.3.3. Domain Names
4. Getting Started
application form : 4.4.1. Obtaining a Domain Name
fully qualified : 3.3.3. Domain Names
in NIS : 9.3. Network Information Service
obtaining : 4.4.1. Obtaining a Domain Name
parameter : 9.4. A BOOTP Server

name servers : 4.2.1.1. Assigning host addresses

parameter : 9.4. A BOOTP Server

organizational : 3.3.1. The Domain Hierarchy

DOMAIN macro (in sendmail) : E.3. m4 sendmail Macros

Domain Name Pointer records : (see PTR resource records)

Domain Name Service : (see DNS)

DOMAIN source file (in sendmail)

E.3.2. FEATURE
E.3.4. DOMAIN
mail relay defines, listed : E.3.4. DOMAIN

domain/named.root : 11.6.3. Cache corruption

domainname command : 9.3. Network Information Service

domaintable database : 10.7.1. Modifying Local Information

dots (..) for domain name : C.3.1. Standard Resource Records

dotted decimal notation : 2.3. Subnets

ds.internic.net : 13.4. Retrieving RFCs

dummy interface : 5.2. Linux Kernel Configuration

dump : 7.7.2. Testing the Configuration

dynamic

assignment of addresses

3.6.1. Dynamic Host Configuration Protocol
4.2.1.1. Assigning host addresses
automatic under DHCP : 9.5. DHCP
circumstances favoring : 4.3. Planning Routing

routing : 7.1. Common Routing Configurations

routing table : 4.3. Planning Routing

Dynamic DNS : 3.6.1. Dynamic Host Configuration Protocol

Dynamic Host Configuration Protocol : (see DHCP)

dynamic-bootp flag : D.3.2. Configuration Parameters

dynamic-bootp-lease-cutoff parameter : 9.5.1. dhcpd.conf

dynamic-bootp-lease-length parameter : 9.5.1. dhcpd.conf

dynamically allocated ports : 2.7.3. Sockets

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