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Index: O

obscurity : (see security, through obscurity)

octal file permissions

5.2.3. Calculating Octal File Permissions
5.2.4. Using Octal File Permissions

octets : 16.2.1. Internet Addresses

Odlyzko, Andrew : 19.3.4. Limitations of Secure RPC

OFB (output feedback) : 6.4.4.2. DES modes

on-the-job security

13.2. On the Job
13.2.6. Departure

one : 9.2.1. Comparison Copies

one-command accounts : 8.1.3. Accounts That Run a Single Command

one-time pad encryption

6.4.7. An Unbreakable Encryption Algorithm
8.7.3. Code Books

one-time passwords

3.7. One-Time Passwords
8.7. One-Time Passwords
8.7.3. Code Books
17.4. Security Implications of Network Services
23.3. Tips on Writing Network Programs

one-way phone lines : 14.4.1. One-Way Phone Lines

open access, tradition of : 1.4.1. Expectations

open accounts

8.1.4. Open Accounts
8.1.4.6. Potential problems with rsh
8.8.7. Algorithm and Library Changes

open command : 23.2. Tips on Avoiding Security-related Bugs

O_CREAT and O_EXCL flags : 23.2. Tips on Avoiding Security-related Bugs

Open Software Distribution (OSD) : Preface

Open Software Foundation (OSF) : 1.3. History of UNIX

open system call : 5.1.7. File Permissions in Detail

Open System Interconnection (OSI) : 16.4.4. OSI

opendir library call : 5.4. Using Directory Permissions

operating systems

1.2. What Is an Operating System?
12.3.3. Other Media
keeping secret : 2.5. The Problem with Security Through Obscurity

operating systems

Which UNIX System?
(see also under specific name)

optic cables : (see cables, network)

optical vampire taps : 12.3.1.5. Fiber optic cable

Options command : 18.3.2. Commands Within the <Directory> Block

Orange Book : 2.3.3. Adding Up the Numbers

originate mode : 14.3.1. Originate and Answer

originate testing : 14.5.3.1. Originate testing

OSF (Open Software Foundation) : 1.3. History of UNIX

OSF/1 operating system : 1.3. History of UNIX

OSI (Open System Interconnection) : 16.4.4. OSI

Outcome table (NIS+) : 19.5.3. NIS+ Tables

outgoing calls : 14.5. Modems and UNIX

outgoing mail, logging : 10.4.2. Mail

output feedback (OFB) : 6.4.4.2. DES modes

outsiders : 13.3. Outsiders

overload attacks

25.2. Overload Attacks
25.2.5. Soft Process Limits: Preventing Accidental Denial of Service

overtime : 13.2.3. Performance Reviews and Monitoring

overwriting media : 12.3.2.3. Sanitize your media before disposal

OW- (sendmail.cf) : 17.3.4.2. Using sendmail to receive email

owners of information : 2.4.4.1. Assign an owner

owners, changing : 5.7. chown: Changing a File's Owner

ownership notices : 26.2.6. Other Tips

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