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Index: H

handshaking

1.5.1. Internet Protocol
1.6.2. Transmission Control Protocol
TCP : 2.7.3. Sockets
three-way : 7.5.2. Border Gateway Protocol

hash mark (#) for comments

3.2. The Host Table
5.4. The Internet Daemon
7.7.1.1. A host configuration
9.1.4. NFS Automounter
9.2.1. The printcap File
9.4. A BOOTP Server
A.1.1. The dip Script File
D.3. The dhcpd.conf Configuration File

Hayes modems : 6.3.2. Dial-Up PPP

compatibility problems : 6.4.4. Troubleshooting Serial Connections

headers

1.3. TCP/IP Protocol Architecture
1.5.1.1. The datagram
3.4.3. Multipurpose Internet Mail Extensions
.h files : 5.3.1.2. Pseudo-device
compressing : 5.2. Linux Kernel Configuration

hello

command

3.4.3. Multipurpose Internet Mail Extensions
7.4. Interior Routing Protocols

messages : 7.5.1. Exterior Gateway Protocol

packets : 7.4.3. Open Shortest Path First

statement (in gated) : B.8.3. The hello Statement

HELO command, in POP : 3.4.2. Post Office Protocol

HELP command

in ESMTP : 3.4.3. Multipurpose Internet Mail Extensions
in nslookup : 8.4. Using nslookup
in SMTP : 3.4.1. Simple Mail Transfer Protocol

hierarchy, system : 3.3.1. The Domain Hierarchy

database system : 9.3.2. NIS+
of responsibility : 12.1.2.1. Use subnets to distribute control

High-level Data Link Control (HDLC) : 6.2.1. The Serial Protocols

high-speed dial-up modems : (see modems)

HINFO resource records

11.6.2. The data is here and the server can't find it!
C.3.1.7. Host Information record

hints file : 8.3.3. The Cache Initialization File

hoaxes about viruses : 12.1.2.2. Use mailing lists to distribute information

hop

1.7. Application Layer
(see also next-hop route)
count : 7.4.1.1. Running RIP with routed
next : 2.5. The Routing Table

Host Information records : (see HINFO resource records)

Host-to-Host Transport Layer : (see Transport Layer)

hosts

1.7. Application Layer

(see also remote, hosts, checking)

addresses : (see addresses)

file, caution regarding : 6.1.3. Assigning a Subnet Mask

list : 12.5.1.1. tcpd access control files

multi-homed : 1.5.1.2. Routing datagrams

names (hn) : 3.1. Names and Addresses

choosing : 4.4.2. Choosing a Hostname
easing transition from old to new : C.3.1.5. Canonical Name record
parameter : 9.4. A BOOTP Server

table

3.1. Names and Addresses
3.2. The Host Table
system, problems with : 3.2. The Host Table

hosts file

3.2. The Host Table
6.1. The ifconfig Command
7.3. Building a Static Routing Table
9.1.4. NFS Automounter
9.3. Network Information Service
creating : 3.2. The Host Table
as maps : 3.3.5. Network Information Service
modifying : 3.3.4. BIND, resolver, and named

hosts.allow file : 12.5.1.1. tcpd access control files

hosts.deny file : 12.5.1.1. tcpd access control files

hosts.equiv file

12.2.5. Secure the r Commands
12.4.2. Looking for Trouble

hosts.lpd file

9.2.1.1. LPD security
12.4.2. Looking for Trouble

htable

command : 3.2. The Host Table
networks.txt : 3.2. The Host Table

html text subtype : 3.4.3. Multipurpose Internet Mail Extensions

HTTP (Hypertext Transfer Protocol)

1.7. Application Layer
13.1. The World Wide Web
message subtype : 3.4.3. Multipurpose Internet Mail Extensions

human error : 11.1.1. Troubleshooting Hints

hunches, verifying : 10.8.1. Testing Rewrite Rules

Hypertext Transfer Protocol : (see HTTP)

hyphen (-) (non-equivalent host) : 12.2.5. Secure the r Commands

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